+x

 

Tim Dawson - 5/22/2024 1:36:08 PM

Would you expect SkyDemon to send GPRMB sentences only, or also synthesize GPRMC sentences and similar?

+x

 

Tim Dawson - 5/22/2024 1:36:08 PM

Would you expect SkyDemon to send GPRMB sentences only, or also synthesize GPRMC sentences and similar?

+x

 

Tim Dawson - 6/12/2024 8:55:23 AM

How strange that now we're focusing on exactly this development, nobody in this thread wishes to help.

+x

 

Skyboy999 - 6/25/2024 7:47:03 AM

+x

 

Tim Dawson - 6/24/2024 10:15:34 AM

From what I've heard, people drive their Skyview autopilot from the Skyview itself, having transferred the SkyDemon route on to it.

I do not know that the Skyview autopilot can be disconnected from the Skyview and given commands by other software, but if it can, and it accepts those commands via RS232, then our solution might work.

Yes, you send the SD route to SV via wifi connection from SV then, once on SV, it can drive autopilot etc. but what I'm referring to is effectively using SD as a navigation source into SV so any changes made in SD would be reflected real-time in SV. Perhaps my confusion but that is what I understood the BT connectivity would enable?

+x

 

Tim Dawson - 8/22/2024 8:20:06 AM

Do you need further information than what's in the user manual?

+x

 

Joachim Gothe - 8/20/2024 4:30:15 PM

Hi,

I tested it today with this equipment:

VAN's RV6 experimental, iPad mini 6, Skydemon 4.0.0.397, Blutooth->RS232 Adapter Bt578v3, TRIO Autopilot.

It works perfectly !! :-)

+x

 

aerobatics500 - 8/26/2024 5:39:26 PM

Can you please post make and model of the bluetooth adapter. I purchased a BT578V3 and it doesn't work with IOS. 

+x

 

Tim Dawson - 8/27/2024 8:59:31 AM

SkyDemon works great with BLE devices on iOS and Android, it has been tested extensively on both using the BT578 but others should work the same.

We don't have a list of radios that support the Garmin protocol that we use. Trig are definitely included.

+x

 

Joachim Gothe - 8/26/2024 8:04:47 PM

+x

 

aerobatics500 - 8/26/2024 5:39:26 PM

Can you please post make and model of the bluetooth adapter. I purchased a BT578V3 and it doesn't work with IOS. 

It don*t work with IOS, it work with skydemon on IOS !!! :-)

You can not find a BLE-Device with native IOS. You must find and add it from Skydemon. (read Manual)

The IOS APP "Lightblue" can show BLE-Devices nearby (like Apple Airtags)

Achim

PS: I ordered my Bt578v3 from Aliexpress (found via google)

+x

 

vikino - 8/28/2024 12:25:15 PM

It works with iOS, tested with iPhone, iPad, as well Android devices, tablets, phones, 578 v3 without any single issue...

Is your 578 correctly configured? It can me configured via RS232 from PC...

+x

 

Joachim Gothe - 8/28/2024 1:46:20 PM

+x

 

vikino - 8/28/2024 12:25:15 PM

It works with iOS, tested with iPhone, iPad, as well Android devices, tablets, phones, 578 v3 without any single issue...

Is your 578 correctly configured? It can me configured via RS232 from PC...

Yesterday my perfekt working installation went crasy. :-(

The TRIO Pro Pilot only accepted the tracking Signal for a few 10 minutes. After resetting all in flight, the Autopilot tries to navigate me in the wrong direction. After another 10 minutes it lose again the Signal.

The route was a "Reversed" original Route (back from Helgoland to Hildesheim)(PH-CRJ in FR24)

I will try it again next week.

Achim

+x

 

Tim Dawson - 8/28/2024 8:57:48 AM

Yes there is documentation out there. Search for Garmin GTR 225 installation manual and look for the PGRMC NMEA sentence.

+x

 

grahamb - 8/28/2024 5:10:57 PM

Caveat all those who wish to hand over control of an aircraft to uncertified avionics and software running on consumer electronics devices.

+x

 

PaulSS - 8/31/2024 8:35:48 AM

Since the Bluetooth to RS232 converter is accessed via SkyDemon, does that mean it is still possible to pair other devices with the Bluetooth function of an iPad? I'm thinking of something like sending the route to an autopilot (connected through SkyDemon) and having the iPad connected to a headset with Bluetooth connectivity (for SkyDemon audio) using the normal Bluetooth function.

+x

 

I_Need_Help - 9/3/2024 9:15:58 AM

+x

 

Kilo Lima - 9/3/2024 9:12:11 AM

+x

 

Kilo Lima - 8/28/2024 5:00:33 PM

Hi,

I’m wondering where you connect the 5v supply for the Bluetooth module in your aircraft?

Thanks!

Any idea please? Thanks for your help!

That will depend on your aircraft type and what rules you operate under e,.g. certified, LAA or BMAA

+x

 

I_Need_Help - 9/3/2024 9:15:58 AM

+x

 

Kilo Lima - 9/3/2024 9:12:11 AM

+x

 

Kilo Lima - 8/28/2024 5:00:33 PM

Hi,

I’m wondering where you connect the 5v supply for the Bluetooth module in your aircraft?

Thanks!

Any idea please? Thanks for your help!

That will depend on your aircraft type and what rules you operate under e,.g. certified, LAA or BMAA

+x

 

I_Need_Help - 9/4/2024 11:01:15 AM

I have had good results with these in past https://www.ebay.co.uk/itm/193552404580?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=UdLxmPhjSYW&sssrc=4429486&ssuid=M5gVARi1SJS&var=493775050618&widget_ver=artemis&media=COPYAlso many people also fit a 12v socket and use a car usb adaptor but get a good make or you may get noise!

+x

 

I_Need_Help - 9/4/2024 11:01:15 AM

I have had good results with these in past https://www.ebay.co.uk/itm/193552404580?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=UdLxmPhjSYW&sssrc=4429486&ssuid=M5gVARi1SJS&var=493775050618&widget_ver=artemis&media=COPYAlso many people also fit a 12v socket and use a car usb adaptor but get a good make or you may get noise!

+x

 

Michael Hoffmann - 8/26/2024 8:12:27 PM

I have connected a DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART module and can receive the "COM setting data" via RS232. 

This works really well.

https://www.amazon.de/dp/B06WGZB2N4/ref=pe_27091401_487027711_TE_SCE_dp_i1 

 
Is there a list of supported radios and their data format? 

Now I'm faced with the problem of wanting to control a Becker AR 6201 radio. It has an RS-422 interface. It shouldn't be a problem to convert RS232 to RS422, but the data format is unknown. Can anyone help?

Thanks in advance

Michael

+x

 

vikino - 8/4/2023 7:57:32 PM

Well...

lets take this one: https://www.aliexpress.com/item/32967247206.html?spm=a2g0o.order_list.order_list_main.58.166c1802dSZoK5

I have tested theese BT-RS232 modules a lot by my self, it works great with Dynon EFIS-D100 + AP74 autopilot and Trig TY96 COM radio, also without any issue with KRT2 COM radio. You just need to "match" baudrate to 4800 or 9600bps, that should do in this case SkyDemon, afterwards it works like a charm, no drop outs with Samsung tablets or my phone Samsung S23 Ultra.

And all another BT to RS232 work in the same way like this one, all are in the phone as bluetooth com port, all this seems to me much easier and more stable than 3rd party devices which are connected over wifi. Not talking about that you kill your internal data sim when connected to wifi of "ADAHRS" and so on...

This will just work perfectly.

Btw., with this, you can go to compleete system, because when you connect to this serial converter also Garrecht TRX1500 (for example), you can use SkyDemon as traffic display - by using GTX TIS protocol over that single BT-RS232 module.

In the same way i have it with Garmin AERA 760, but planning a route is terrible on that device, but Garmin has built in RS232...

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

+x

 

Tim Dawson - 9/25/2024 10:23:55 AM

I can't commit to a time schedule, sorry. I need to re-engineer part of the Bluetooth stack before it will be practical, and that could be weeks or months.

+x

 

Tim Dawson - 9/26/2024 9:51:37 AM

You can connect a FLARM traffic receiver to SkyDemon via Bluetooth so that the traffic it receives is displayed in SkyDemon. That's the only relationship between traffic and Bluetooth.

+x

 

Michael Hoffmann - 10/14/2024 8:59:32 PM

+x

 

norland - 9/3/2024 11:37:27 AM

Can anyone confirm if the available protocols work with a Becker AR6201, and they have it working.

No, it will not work by default.

First, some words about TTL and V24.

The mentioned working transceivers (Garmin GTR 225, f.u.n.k.e. ATR833-II, Trig TY 91/96) have a RS-232 interface with V24 voltage level.

This means serial transmission with logical low at -12V and high at +12 V (nearly...).

The cheap BT-Modules (which work like a charm with the iPad) have TTL voltage level. (low at 0 V , high at + 5V).

To connect it to your RS-232 transceiver you need a voltage level converter.

Something like this:

https://www.ebay.de/itm/403590179075

Now to Becker.

The AR6201 has an RS-422 interface. RS-422 is electrically different to RS-232 (4 lines, current driven).

But it isn't the main problem, there are many converter from TTL to RS-422 available.

https://www.ebay.de/itm/266249894496

The challenge is the implementation of a translator from NMEA (ASCII) PGRMC sentences to the in-house Becker protocol.

I found an Open Source solution used in the LK8000:

https://github.com/LK8000/LK8000/blob/master/Common/Source/Devices/devAR620x.cpp

There should be any information needed for such a piece of software...

I can't wait to try it out when I can have an AR6201 outside of the plane.

+x

 

Pascal - 10/16/2024 4:54:09 PM

+x

 

Michael Hoffmann - 10/14/2024 8:59:32 PM

+x

 

norland - 9/3/2024 11:37:27 AM

Can anyone confirm if the available protocols work with a Becker AR6201, and they have it working.

No, it will not work by default.

First, some words about TTL and V24.

The mentioned working transceivers (Garmin GTR 225, f.u.n.k.e. ATR833-II, Trig TY 91/96) have a RS-232 interface with V24 voltage level.

This means serial transmission with logical low at -12V and high at +12 V (nearly...).

The cheap BT-Modules (which work like a charm with the iPad) have TTL voltage level. (low at 0 V , high at + 5V).

To connect it to your RS-232 transceiver you need a voltage level converter.

Something like this:

https://www.ebay.de/itm/403590179075

Now to Becker.

The AR6201 has an RS-422 interface. RS-422 is electrically different to RS-232 (4 lines, current driven).

But it isn't the main problem, there are many converter from TTL to RS-422 available.

https://www.ebay.de/itm/266249894496

The challenge is the implementation of a translator from NMEA (ASCII) PGRMC sentences to the in-house Becker protocol.

I found an Open Source solution used in the LK8000:

https://github.com/LK8000/LK8000/blob/master/Common/Source/Devices/devAR620x.cpp

There should be any information needed for such a piece of software...

I can't wait to try it out when I can have an AR6201 outside of the plane.

Hello , i have spent some time trying the Irxon bluetooth dongle with an rs 485/422 converter wired up to my Becker Ar6201 (rx2+ to pin 2 tx 2+, tx2+ to pin 3 rx2+,rx2- to pin 9 tx2-, tx2- to pin 10 rx2-,  pin 23 ground) .The dongle is recognized by skydemon, the chosen frequency is described as being sent but none of the radio settings in the Skydemon list (garmin,funke..)produces any result. The tandem box in the internal menu of the becker is checked on so it should recognize a remote. If have seen youtube videos of the radio accepting frequency changes from a

+x

 

Michael Hoffmann - 10/16/2024 7:52:23 PM

+x

 

Pascal - 10/16/2024 4:54:09 PM

+x

 

Michael Hoffmann - 10/14/2024 8:59:32 PM

+x

 

norland - 9/3/2024 11:37:27 AM

Can anyone confirm if the available protocols work with a Becker AR6201, and they have it working.

No, it will not work by default.

First, some words about TTL and V24.

The mentioned working transceivers (Garmin GTR 225, f.u.n.k.e. ATR833-II, Trig TY 91/96) have a RS-232 interface with V24 voltage level.

This means serial transmission with logical low at -12V and high at +12 V (nearly...).

The cheap BT-Modules (which work like a charm with the iPad) have TTL voltage level. (low at 0 V , high at + 5V).

To connect it to your RS-232 transceiver you need a voltage level converter.

Something like this:

https://www.ebay.de/itm/403590179075

Now to Becker.

The AR6201 has an RS-422 interface. RS-422 is electrically different to RS-232 (4 lines, current driven).

But it isn't the main problem, there are many converter from TTL to RS-422 available.

https://www.ebay.de/itm/266249894496

The challenge is the implementation of a translator from NMEA (ASCII) PGRMC sentences to the in-house Becker protocol.

I found an Open Source solution used in the LK8000:

https://github.com/LK8000/LK8000/blob/master/Common/Source/Devices/devAR620x.cpp

There should be any information needed for such a piece of software...

I can't wait to try it out when I can have an AR6201 outside of the plane.

Hello , i have spent some time trying the Irxon bluetooth dongle with an rs 485/422 converter wired up to my Becker Ar6201 (rx2+ to pin 2 tx 2+, tx2+ to pin 3 rx2+,rx2- to pin 9 tx2-, tx2- to pin 10 rx2-,  pin 23 ground) .The dongle is recognized by skydemon, the chosen frequency is described as being sent but none of the radio settings in the Skydemon list (garmin,funke..)produces any result. The tandem box in the internal menu of the becker is checked on so it should recognize a remote. If have seen youtube videos of the radio accepting frequency changes from a

As I mentioned before, Becker has its own protocol, nothing like NMEA (ASCII) PGRMC sets. You need to translate the output/input into Becker language. A separate controller with translation software is required.
Even if you can communicate with the AR6201 via a converter (RS-232 <-> RS-422), the device does not understand the commands.

I'm working on it.

Please confirm that you are interested in a solution. The more interested parties, the better.

 

+x

 

Michael Hoffmann - 10/16/2024 7:52:23 PM

+x

 

Pascal - 10/16/2024 4:54:09 PM

+x

 

Michael Hoffmann - 10/14/2024 8:59:32 PM

+x

 

norland - 9/3/2024 11:37:27 AM

Can anyone confirm if the available protocols work with a Becker AR6201, and they have it working.

No, it will not work by default.

First, some words about TTL and V24.

The mentioned working transceivers (Garmin GTR 225, f.u.n.k.e. ATR833-II, Trig TY 91/96) have a RS-232 interface with V24 voltage level.

This means serial transmission with logical low at -12V and high at +12 V (nearly...).

The cheap BT-Modules (which work like a charm with the iPad) have TTL voltage level. (low at 0 V , high at + 5V).

To connect it to your RS-232 transceiver you need a voltage level converter.

Something like this:

https://www.ebay.de/itm/403590179075

Now to Becker.

The AR6201 has an RS-422 interface. RS-422 is electrically different to RS-232 (4 lines, current driven).

But it isn't the main problem, there are many converter from TTL to RS-422 available.

https://www.ebay.de/itm/266249894496

The challenge is the implementation of a translator from NMEA (ASCII) PGRMC sentences to the in-house Becker protocol.

I found an Open Source solution used in the LK8000:

https://github.com/LK8000/LK8000/blob/master/Common/Source/Devices/devAR620x.cpp

There should be any information needed for such a piece of software...

I can't wait to try it out when I can have an AR6201 outside of the plane.

Hello , i have spent some time trying the Irxon bluetooth dongle with an rs 485/422 converter wired up to my Becker Ar6201 (rx2+ to pin 2 tx 2+, tx2+ to pin 3 rx2+,rx2- to pin 9 tx2-, tx2- to pin 10 rx2-,  pin 23 ground) .The dongle is recognized by skydemon, the chosen frequency is described as being sent but none of the radio settings in the Skydemon list (garmin,funke..)produces any result. The tandem box in the internal menu of the becker is checked on so it should recognize a remote. If have seen youtube videos of the radio accepting frequency changes from a

As I mentioned before, Becker has its own protocol, nothing like NMEA (ASCII) PGRMC sets. You need to translate the output/input into Becker language. A separate controller with translation software is required.
Even if you can communicate with the AR6201 via a converter (RS-232 <-> RS-422), the device does not understand the commands.

I'm working on it.

Please confirm that you are interested in a solution. The more interested parties, the better.

 

+x

 

Pascal - 10/17/2024 3:10:02 PM

+x

 

Michael Hoffmann - 10/16/2024 7:52:23 PM

+x

 

Pascal - 10/16/2024 4:54:09 PM

+x

 

Michael Hoffmann - 10/14/2024 8:59:32 PM

+x

 

norland - 9/3/2024 11:37:27 AM

Can anyone confirm if the available protocols work with a Becker AR6201, and they have it working.

No, it will not work by default.

First, some words about TTL and V24.

The mentioned working transceivers (Garmin GTR 225, f.u.n.k.e. ATR833-II, Trig TY 91/96) have a RS-232 interface with V24 voltage level.

This means serial transmission with logical low at -12V and high at +12 V (nearly...).

The cheap BT-Modules (which work like a charm with the iPad) have TTL voltage level. (low at 0 V , high at + 5V).

To connect it to your RS-232 transceiver you need a voltage level converter.

Something like this:

https://www.ebay.de/itm/403590179075

Now to Becker.

The AR6201 has an RS-422 interface. RS-422 is electrically different to RS-232 (4 lines, current driven).

But it isn't the main problem, there are many converter from TTL to RS-422 available.

https://www.ebay.de/itm/266249894496

The challenge is the implementation of a translator from NMEA (ASCII) PGRMC sentences to the in-house Becker protocol.

I found an Open Source solution used in the LK8000:

https://github.com/LK8000/LK8000/blob/master/Common/Source/Devices/devAR620x.cpp

There should be any information needed for such a piece of software...

I can't wait to try it out when I can have an AR6201 outside of the plane.

Hello , i have spent some time trying the Irxon bluetooth dongle with an rs 485/422 converter wired up to my Becker Ar6201 (rx2+ to pin 2 tx 2+, tx2+ to pin 3 rx2+,rx2- to pin 9 tx2-, tx2- to pin 10 rx2-,  pin 23 ground) .The dongle is recognized by skydemon, the chosen frequency is described as being sent but none of the radio settings in the Skydemon list (garmin,funke..)produces any result. The tandem box in the internal menu of the becker is checked on so it should recognize a remote. If have seen youtube videos of the radio accepting frequency changes from a

As I mentioned before, Becker has its own protocol, nothing like NMEA (ASCII) PGRMC sets. You need to translate the output/input into Becker language. A separate controller with translation software is required.
Even if you can communicate with the AR6201 via a converter (RS-232 <-> RS-422), the device does not understand the commands.

I'm working on it.

Please confirm that you are interested in a solution. The more interested parties, the better.

 

What shape or form would a Becker “Translator” take? Lines of code from Skydemon or a third-party device inserted in the chain between bluetooth dongle,converter and radio? Just curious.The question might sound stupid but I am more at home with engines and wiring

+x

 

Tim Dawson - 10/18/2024 8:42:53 AM

Yes, we are willing to add support for Becker radios if someone can help us with the protocol and testing of the feature. Just get in touch with me via customer support (Michael) and we can talk about it.

+x

 

flying_john - 11/18/2024 6:29:58 PM

When this is used to send a frequency(channel) to the radio, how do you choose between standby or active frequency when you choose a new frequency in SD.

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

+x

 

Michael Hoffmann - 11/18/2024 8:44:51 PM

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

I'm not sure I understood you correctly, you only connected ONE bluetooth device to the Funke radio AND to the Dynon autopilot? How did you do that?

+x

 

vikino - 11/23/2024 11:20:57 AM

+x

 

Michael Hoffmann - 11/18/2024 8:44:51 PM

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

I'm not sure I understood you correctly, you only connected ONE bluetooth device to the Funke radio AND to the Dynon autopilot? How did you do that?

Yes, i have on one IRXON Trig radio and Dynon AP... Just use the same RS232 wire for both...

+x

 

Michael Hoffmann - 11/23/2024 3:10:34 PM

+x

 

vikino - 11/23/2024 11:20:57 AM

+x

 

Michael Hoffmann - 11/18/2024 8:44:51 PM

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

I'm not sure I understood you correctly, you only connected ONE bluetooth device to the Funke radio AND to the Dynon autopilot? How did you do that?

Yes, i have on one IRXON Trig radio and Dynon AP... Just use the same RS232 wire for both...

Well, RS232 is defined as a bidirectional point-to-point connection. If you only send in one direction, this is possible. 

This workaround is called multidrop. This only works if there is ONE transmitter and multiple receivers. The recipients all receive the same data packets and discard those they do not understand. As soon as the receivers also have to react, this concept with RS232 fails. 

Devices transmitting at the same time lead to collisions. The transmission becomes unreadable. 

I believe SD has only sent over BLE so far. Some devices, e.g. the Becker AR6201 also need to send data to SD, and then multidrop will fail. 

I assume that each controlled device has to use its own BLE. Maybe Tim can say something about that?

+x

 

vikino - 11/24/2024 1:43:26 PM

+x

 

Michael Hoffmann - 11/23/2024 3:10:34 PM

+x

 

vikino - 11/23/2024 11:20:57 AM

+x

 

Michael Hoffmann - 11/18/2024 8:44:51 PM

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

I'm not sure I understood you correctly, you only connected ONE bluetooth device to the Funke radio AND to the Dynon autopilot? How did you do that?

Yes, i have on one IRXON Trig radio and Dynon AP... Just use the same RS232 wire for both...

Well, RS232 is defined as a bidirectional point-to-point connection. If you only send in one direction, this is possible. 

This workaround is called multidrop. This only works if there is ONE transmitter and multiple receivers. The recipients all receive the same data packets and discard those they do not understand. As soon as the receivers also have to react, this concept with RS232 fails. 

Devices transmitting at the same time lead to collisions. The transmission becomes unreadable. 

I believe SD has only sent over BLE so far. Some devices, e.g. the Becker AR6201 also need to send data to SD, and then multidrop will fail. 

I assume that each controlled device has to use its own BLE. Maybe Tim can say something about that?

If becker needs to send back (dont understand why, because it should only receive freq from SD, bi direction is used on glass cockpits when you control com via display and you need to see tuned freq im case that you tune freq manually on radio, this is not feature in SD, so no need to com back from radio), and if, then its still not an issue, because AP only receives, so the TX line from IRXON goes to becker and AP and TX from becker to RX irxon, there will be still only one bidirectional device...

+x

 

Tim Dawson - 11/25/2024 3:51:01 PM

Our new 4.0.1 version allows the TX part of the Bluetooth configuration to be connected to both a radio (so frequencies can be sent) and autopilot (so course data can be sent). In future, my goal is to allow the same Bluetooth device to also act as a GPS/traffic receiver through the RX part, but that cannot currently be done, you need two Bluetooth devices in this case.

As Michael says, as soon as a device needs bidirectional communication - as the Becker radios do - this concept will not work.

+x

 

Michael Hoffmann - 11/18/2024 8:44:51 PM

+x

 

jekroth - 11/15/2024 3:07:38 PM

+x

 

Tim Dawson - 7/5/2023 9:13:53 AM

No, not until there is a device with widespread uptake in the community that we can actually develop with. We can't just "support Bluetooth" without a known device to develop and test with.

Hello I have connected 1 bluetooth device to Funke radio and Dynon autopilot. It works great with Android but doesn't work with iPhone. With iphone you have to choose radio or Ap. Did we miss something or does it not work to control both with the iPhone. Is there anything that solves this? or should I mount 2 bluetooth units one yill radio and the other for AP

I'm not sure I understood you correctly, you only connected ONE bluetooth device to the Funke radio AND to the Dynon autopilot? How did you do that?

+x

 

Tim Dawson - 11/25/2024 3:51:01 PM

Our new 4.0.1 version allows the TX part of the Bluetooth configuration to be connected to both a radio (so frequencies can be sent) and autopilot (so course data can be sent). In future, my goal is to allow the same Bluetooth device to also act as a GPS/traffic receiver through the RX part, but that cannot currently be done, you need two Bluetooth devices in this case.

As Michael says, as soon as a device needs bidirectional communication - as the Becker radios do - this concept will not work.

+x

 

jekroth - 12/6/2024 8:46:26 PM

+x

 

Tim Dawson - 11/25/2024 3:51:01 PM

Our new 4.0.1 version allows the TX part of the Bluetooth configuration to be connected to both a radio (so frequencies can be sent) and autopilot (so course data can be sent). In future, my goal is to allow the same Bluetooth device to also act as a GPS/traffic receiver through the RX part, but that cannot currently be done, you need two Bluetooth devices in this case.

As Michael says, as soon as a device needs bidirectional communication - as the Becker radios do - this concept will not work.

i got it working with android but not with iphone. is that what is fixed in the current beta

+x

 

Michael Hoffmann - 11/16/2024 6:03:54 PM

Thanks to Tim there is now an Android beta with support of the Becker AR6201 protocol.

https://www.skydemon.aero/start/beta.aspx

Here is my solution to connect a BLE device to the Becker AR6201 radio:

Bill of material:

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Modul mit 4 PIN Base Board für Arduino UNO R3 Mega 2560 Nano

https://www.amazon.de/dp/B06WGZB2N4?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0

RS422 MAX490 Mutual Transfer Full-duplex TTL Bi-directional Signal Module DC 5V

https://www.ebay.de/itm/266249894496

AMS1117 DC-DC Step Down Voltage Converter 6V - 12V to 5V

https://www.ebay.de/itm/295478609251

Minifuse 125 mA

https://www.reichelt.de/kleinstsicherung-superflink-125-ma-litt-0251-125mat-p242296.html?PROVID=2788&gad_source=1&gclid=EAIaIQobChMIsK2ruLbhiQMVS_B5BB0FRTUPEAQYASABEgIVXvD_BwE

My BLE to AR620x housing

Please contact me for STL-files, if needed.

The schematic of the circuit is attached.

Please note this is only for 12 V bus voltage,

and ONLY for experimental use!!!

Cheers!

+x

 

Michael Hoffmann - 12/15/2024 7:38:39 PM

+x

 

Michael Hoffmann - 11/16/2024 6:03:54 PM

Thanks to Tim there is now an Android beta with support of the Becker AR6201 protocol.

https://www.skydemon.aero/start/beta.aspx

Here is my solution to connect a BLE device to the Becker AR6201 radio:

Bill of material:

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Modul mit 4 PIN Base Board für Arduino UNO R3 Mega 2560 Nano

https://www.amazon.de/dp/B06WGZB2N4?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0

RS422 MAX490 Mutual Transfer Full-duplex TTL Bi-directional Signal Module DC 5V

https://www.ebay.de/itm/266249894496

AMS1117 DC-DC Step Down Voltage Converter 6V - 12V to 5V

https://www.ebay.de/itm/295478609251

Minifuse 125 mA

https://www.reichelt.de/kleinstsicherung-superflink-125-ma-litt-0251-125mat-p242296.html?PROVID=2788&gad_source=1&gclid=EAIaIQobChMIsK2ruLbhiQMVS_B5BB0FRTUPEAQYASABEgIVXvD_BwE

My BLE to AR620x housing

Please contact me for STL-files, if needed.

The schematic of the circuit is attached.

Please note this is only for 12 V bus voltage,

and ONLY for experimental use!!!

Cheers!

I have the next AR620x adapter ready. It looks like this is becoming a business model for some people...
But you can make the adapter yourself as described above.
If you don't know much about electronics, soldering and 3D printing, I'll do it for you. No large quantities, just one handmade piece at a time. The adapter fits directly onto the free connection of your Becker AR620x. All that is required is a power connection (+12 V, GND) - no further mechanical work.

I guess 70-90 bugs is enough for one unit.

 

Please note: THIS IS 12 V EXPERIMEMTAL ONLY!

... but will work like a charme...

Cheers!

+x

 

ALSL-Flyer - 12/15/2024 8:50:32 PM

+x

 

Michael Hoffmann - 12/15/2024 7:38:39 PM

+x

 

Michael Hoffmann - 11/16/2024 6:03:54 PM

Thanks to Tim there is now an Android beta with support of the Becker AR6201 protocol.

https://www.skydemon.aero/start/beta.aspx

Here is my solution to connect a BLE device to the Becker AR6201 radio:

Bill of material:

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Modul mit 4 PIN Base Board für Arduino UNO R3 Mega 2560 Nano

https://www.amazon.de/dp/B06WGZB2N4?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0

RS422 MAX490 Mutual Transfer Full-duplex TTL Bi-directional Signal Module DC 5V

https://www.ebay.de/itm/266249894496

AMS1117 DC-DC Step Down Voltage Converter 6V - 12V to 5V

https://www.ebay.de/itm/295478609251

Minifuse 125 mA

https://www.reichelt.de/kleinstsicherung-superflink-125-ma-litt-0251-125mat-p242296.html?PROVID=2788&gad_source=1&gclid=EAIaIQobChMIsK2ruLbhiQMVS_B5BB0FRTUPEAQYASABEgIVXvD_BwE

My BLE to AR620x housing

Please contact me for STL-files, if needed.

The schematic of the circuit is attached.

Please note this is only for 12 V bus voltage,

and ONLY for experimental use!!!

Cheers!

I have the next AR620x adapter ready. It looks like this is becoming a business model for some people...
But you can make the adapter yourself as described above.
If you don't know much about electronics, soldering and 3D printing, I'll do it for you. No large quantities, just one handmade piece at a time. The adapter fits directly onto the free connection of your Becker AR620x. All that is required is a power connection (+12 V, GND) - no further mechanical work.

I guess 70-90 bugs is enough for one unit.

 

Please note: THIS IS 12 V EXPERIMEMTAL ONLY!

... but will work like a charme...

Cheers!

Michael, this looks like a perfect solution! Great! You fixed the connector with the slider - could you please share the source for this slider?

+x

 

Michael Hoffmann - 12/15/2024 9:16:39 PM

+x

 

ALSL-Flyer - 12/15/2024 8:50:32 PM

+x

 

Michael Hoffmann - 12/15/2024 7:38:39 PM

+x

 

Michael Hoffmann - 11/16/2024 6:03:54 PM

Thanks to Tim there is now an Android beta with support of the Becker AR6201 protocol.

https://www.skydemon.aero/start/beta.aspx

Here is my solution to connect a BLE device to the Becker AR6201 radio:

Bill of material:

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Modul mit 4 PIN Base Board für Arduino UNO R3 Mega 2560 Nano

https://www.amazon.de/dp/B06WGZB2N4?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0

RS422 MAX490 Mutual Transfer Full-duplex TTL Bi-directional Signal Module DC 5V

https://www.ebay.de/itm/266249894496

AMS1117 DC-DC Step Down Voltage Converter 6V - 12V to 5V

https://www.ebay.de/itm/295478609251

Minifuse 125 mA

https://www.reichelt.de/kleinstsicherung-superflink-125-ma-litt-0251-125mat-p242296.html?PROVID=2788&gad_source=1&gclid=EAIaIQobChMIsK2ruLbhiQMVS_B5BB0FRTUPEAQYASABEgIVXvD_BwE

My BLE to AR620x housing

Please contact me for STL-files, if needed.

The schematic of the circuit is attached.

Please note this is only for 12 V bus voltage,

and ONLY for experimental use!!!

Cheers!

I have the next AR620x adapter ready. It looks like this is becoming a business model for some people...
But you can make the adapter yourself as described above.
If you don't know much about electronics, soldering and 3D printing, I'll do it for you. No large quantities, just one handmade piece at a time. The adapter fits directly onto the free connection of your Becker AR620x. All that is required is a power connection (+12 V, GND) - no further mechanical work.

I guess 70-90 bugs is enough for one unit.

 

Please note: THIS IS 12 V EXPERIMEMTAL ONLY!

... but will work like a charme...

Cheers!

Michael, this looks like a perfect solution! Great! You fixed the connector with the slider - could you please share the source for this slider?

Amphenol Conec 165X11299XE

You will need the slider, the spring and 4 of 6 screws.

https://www.digikey.de/de/products/detail/amphenol-conec/165X11299XE/1017451?srsltid=AfmBOoqFji0EENN9MVwPm7CfNOq5eAT4pUIFHrqCrk8X-L_AZz48RMad

+x

 

Michael Hoffmann - 12/17/2024 9:32:27 PM

For those who don't want to tinker:

https://www.ebay.de/itm/167179863849

Always only one sample on demand.  

When finished I will post another one here.

+x

 

ALSL-Flyer - 12/18/2024 9:14:28 PM

..here you can see my approach. Thanks to Michael hints the Becker connector issue is now solved. This device is now ready for the test with the Becker Radio. The pre check was done with the female connector where I connected the Tx with the Rx pins. With this approach it was possible the HW-path until the Rx pin of the BT Module.One issue took some hours to solve. The BT-Modul need 3.3V signals and the RS322-TTL module delivers 5V signals. The BT Module stopped working... only after adapting to 3.3V by 2 resistors it worked. I will report about the results tomorrow...

+x

 

Michael Hoffmann - 11/16/2024 6:03:54 PM

Thanks to Tim there is now an Android beta with support of the Becker AR6201 protocol.

https://www.skydemon.aero/start/beta.aspx

Here is my solution to connect a BLE device to the Becker AR6201 radio:

Bill of material:

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Modul mit 4 PIN Base Board für Arduino UNO R3 Mega 2560 Nano

https://www.amazon.de/dp/B06WGZB2N4?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0

RS422 MAX490 Mutual Transfer Full-duplex TTL Bi-directional Signal Module DC 5V

https://www.ebay.de/itm/266249894496

AMS1117 DC-DC Step Down Voltage Converter 6V - 12V to 5V

https://www.ebay.de/itm/295478609251

Minifuse 125 mA

https://www.reichelt.de/kleinstsicherung-superflink-125-ma-litt-0251-125mat-p242296.html?PROVID=2788&gad_source=1&gclid=EAIaIQobChMIsK2ruLbhiQMVS_B5BB0FRTUPEAQYASABEgIVXvD_BwE

My BLE to AR620x housing

Please contact me for STL-files, if needed.

The schematic of the circuit is attached.

Please note this is only for 12 V bus voltage,

and ONLY for experimental use!!!

Cheers!

+x

 

Dortro - 12/19/2024 9:11:11 PM

Dear fellow SD users,I am new here and need some advice.I use a KRT2 radio and bought a IRXSON BT580 adapter.I want to send radio frequencies from SD on my iPad to the KRT2 via the adapter.Question: Do I need to hard wire (solder) the pins on the RS 232 adapter to the pins on the db9 plug on the KRT2 (of course, the connections as mentioned in the SD user manual)? And what about the power supply for the BT580?Thank you so much!

+x

 

Dortro - 12/20/2024 7:28:18 AM

Hi Michael,Thank you for your somewhat clinical answer, I appreciate it.I have not used the IRXON BT580 yet, it is on my desk not in my plane (Phoenix MLA)….I had hoped someone has experience with the combi BT580 - KRT2I will connect the right pins, of course, and not just put them on top of each other.The question about power supply for the BT580, I still have, however…Best regards

+x

 

Michael Hoffmann - 12/20/2024 9:43:24 PM

+x

 

Dortro - 12/20/2024 7:28:18 AM

Hi Michael,Thank you for your somewhat clinical answer, I appreciate it.I have not used the IRXON BT580 yet, it is on my desk not in my plane (Phoenix MLA)….I had hoped someone has experience with the combi BT580 - KRT2I will connect the right pins, of course, and not just put them on top of each other.The question about power supply for the BT580, I still have, however…Best regards

Hello Dorto,

in addition to my somewhat clinical answer, here are some suggestions on how to solve the problem.
There are installation instructions for the KRT-2 freely available in various languages. You can find the pin assignment there. Fortunately, these guys have a connection for a remote control prepared. You can use it for your purpose.

Look at the Remote Connetor (Pin 13 and 2 are Data and Pin 15/8 are Avonics Power and Pins 1/9 are GND).

Now you need a partner connection on the BT580. The manuel depicts this:

Signal routing is KTR2/13 to BT580/3, KTR2/2 to BTR580/2.

Power routing is KTR2/1 or 9 to BT580/5 for GND.

You shoud use for the signal wires AWG 22 and for the power wires AWG 18. But this is not so important, current is low.

And now it depends! What is your avionics power voltage? The BT need VCC (power) in a range 3 ... 6 V DC.

If you have a 5V DC source in your plane, you can use this. Any other case you have to install a voltage regulator (DC-DC drop down) from you avionics bus voltage to the needed 5 V on Pin BT580/9.

Hope this will give you some hints.

Regards

Michael

+x

 

Final glide - 12/21/2024 9:11:11 AM

Well hats off to the skydemon team!!!I made a demo panel with three units running off one BT unit A trig radio, AV-30 and fuel flow computer They all worked perfectly with the radio and autopilot function ticked together The only issue was the trig had old software so didn’t work until this was updated.What a brilliant job by Tim and the team SD just keeps getting better and better !!!Many thanks James

+x

 

Final glide - 12/21/2024 9:29:34 AM

Hi the SD outputs speed and track so all the nav info on AV-30 is available and on the FF computer it gets time and speed and distance so is perfect I have a Bendix autopilot being fitted this winter and it will work that as well I am sure What a brilliant system !I did have a garmin handheld on the panel to feed the Av and FF but that is now on the shelf

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

+x

 

Michael Hoffmann - 1/6/2025 6:58:52 PM

+x

 

maikmita - 1/6/2025 3:02:49 PM

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

Hello

 Michael,

very interesting solution. I am using the Krt2 in combination with the Air Control Display from Air Avionics, which functions as a remote control for the KRT2.

I am wondering if your solution would be able to operate in between those two devices or if I would need to place a switch in between to decide whether the BT or the air control display is connected to the KRT2?

Best regards from the south of Germany,

Maik

Well, the first answer is NO - but it depends...

The KRT2 uses an RS232 interface for communication. RS232 is by definition a point-to-point connection, not a bus system.

This standard can be extended to one transmitter and N receivers without any problems, as long as the output of the transmitter is not overloaded. This is called multi-drop. For us this means: A BLE module sends to several RX devices via TX without problems.

It doesn't work the other way around. Multiple transmitters cannot transmit to one receiver, for 2 reasons: 

1.) The outputs of the transmitters work electrically against each other, which is like a short circuit.

2.) If both transmitters transmit at the same time, the data becomes unreadable (corrupted).

But no problem without a solution or at least a workaround...

The simplest solution is 2 diodes. These are connected to the TX lines to prevent a short circuit. This means that the V24 levels are no longer 100% correct, but it usually works.

You can improve the result with a pullup resistor. But I wouldn't use this DIY solution for an avionics device.

And here comes the solution:
The KRT2 BLE adapter from SD-Link mentioned above has 2 independent RS232 channels internally. Normally only one RS232 channel is used to output the received BLE command to the radio and to pin 13 of the outside connector. But that can be reprogrammed, to use pin 13 as an isolated RS232-input as well.

Then both signals are ORed with the correct V24 levels and passed on to the radio.

You just have to make sure that both sources are not transmitting at the same time. Does the Air Control Display transmit constantly or only when the frequency changes? SD is transmitting only, when a frequency is changed.

Best regards from the east of Germany

Michael

+x

 

maikmita - 1/6/2025 7:34:16 PM

+x

 

Michael Hoffmann - 1/6/2025 6:58:52 PM

+x

 

maikmita - 1/6/2025 3:02:49 PM

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

Hello

 Michael,

very interesting solution. I am using the Krt2 in combination with the Air Control Display from Air Avionics, which functions as a remote control for the KRT2.

I am wondering if your solution would be able to operate in between those two devices or if I would need to place a switch in between to decide whether the BT or the air control display is connected to the KRT2?

Best regards from the south of Germany,

Maik

Well, the first answer is NO - but it depends...

The KRT2 uses an RS232 interface for communication. RS232 is by definition a point-to-point connection, not a bus system.

This standard can be extended to one transmitter and N receivers without any problems, as long as the output of the transmitter is not overloaded. This is called multi-drop. For us this means: A BLE module sends to several RX devices via TX without problems.

It doesn't work the other way around. Multiple transmitters cannot transmit to one receiver, for 2 reasons: 

1.) The outputs of the transmitters work electrically against each other, which is like a short circuit.

2.) If both transmitters transmit at the same time, the data becomes unreadable (corrupted).

But no problem without a solution or at least a workaround...

The simplest solution is 2 diodes. These are connected to the TX lines to prevent a short circuit. This means that the V24 levels are no longer 100% correct, but it usually works.

You can improve the result with a pullup resistor. But I wouldn't use this DIY solution for an avionics device.

And here comes the solution:
The KRT2 BLE adapter from SD-Link mentioned above has 2 independent RS232 channels internally. Normally only one RS232 channel is used to output the received BLE command to the radio and to pin 13 of the outside connector. But that can be reprogrammed, to use pin 13 as an isolated RS232-input as well.

Then both signals are ORed with the correct V24 levels and passed on to the radio.

You just have to make sure that both sources are not transmitting at the same time. Does the Air Control Display transmit constantly or only when the frequency changes? SD is transmitting only, when a frequency is changed.

Best regards from the east of Germany

Michael

Michael,

thanks a lot for this detailed answer.

Right now I do not know if the air control display transmits constantly. But I try to investigate in the documentation.

What I know is, that the communication with the Krt2 is bidirectional because changes on the KRT2 will also be displayed on the air control display. So RX and TX are both used from my point of view.

I am not sure if I got you correct: you mean when reprogramming the adapter to use pin 13 as a separate RS232 chanel it will receive the commands from the air control display on pin 13 and forwards it on the other chanel to the pin of the KRT2?

Regards

Maik

+x

 

maikmita - 1/6/2025 7:34:16 PM

+x

 

Michael Hoffmann - 1/6/2025 6:58:52 PM

+x

 

maikmita - 1/6/2025 3:02:49 PM

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

Hello

 Michael,

very interesting solution. I am using the Krt2 in combination with the Air Control Display from Air Avionics, which functions as a remote control for the KRT2.

I am wondering if your solution would be able to operate in between those two devices or if I would need to place a switch in between to decide whether the BT or the air control display is connected to the KRT2?

Best regards from the south of Germany,

Maik

Well, the first answer is NO - but it depends...

The KRT2 uses an RS232 interface for communication. RS232 is by definition a point-to-point connection, not a bus system.

This standard can be extended to one transmitter and N receivers without any problems, as long as the output of the transmitter is not overloaded. This is called multi-drop. For us this means: A BLE module sends to several RX devices via TX without problems.

It doesn't work the other way around. Multiple transmitters cannot transmit to one receiver, for 2 reasons: 

1.) The outputs of the transmitters work electrically against each other, which is like a short circuit.

2.) If both transmitters transmit at the same time, the data becomes unreadable (corrupted).

But no problem without a solution or at least a workaround...

The simplest solution is 2 diodes. These are connected to the TX lines to prevent a short circuit. This means that the V24 levels are no longer 100% correct, but it usually works.

You can improve the result with a pullup resistor. But I wouldn't use this DIY solution for an avionics device.

And here comes the solution:
The KRT2 BLE adapter from SD-Link mentioned above has 2 independent RS232 channels internally. Normally only one RS232 channel is used to output the received BLE command to the radio and to pin 13 of the outside connector. But that can be reprogrammed, to use pin 13 as an isolated RS232-input as well.

Then both signals are ORed with the correct V24 levels and passed on to the radio.

You just have to make sure that both sources are not transmitting at the same time. Does the Air Control Display transmit constantly or only when the frequency changes? SD is transmitting only, when a frequency is changed.

Best regards from the east of Germany

Michael

Michael,

thanks a lot for this detailed answer.

Right now I do not know if the air control display transmits constantly. But I try to investigate in the documentation.

What I know is, that the communication with the Krt2 is bidirectional because changes on the KRT2 will also be displayed on the air control display. So RX and TX are both used from my point of view.

I am not sure if I got you correct: you mean when reprogramming the adapter to use pin 13 as a separate RS232 chanel it will receive the commands from the air control display on pin 13 and forwards it on the other chanel to the pin of the KRT2?

Regards

Maik

+x

 

maikmita - 1/6/2025 7:45:19 PM

+x

 

maikmita - 1/6/2025 7:34:16 PM

+x

 

Michael Hoffmann - 1/6/2025 6:58:52 PM

+x

 

maikmita - 1/6/2025 3:02:49 PM

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

Hello

 Michael,

very interesting solution. I am using the Krt2 in combination with the Air Control Display from Air Avionics, which functions as a remote control for the KRT2.

I am wondering if your solution would be able to operate in between those two devices or if I would need to place a switch in between to decide whether the BT or the air control display is connected to the KRT2?

Best regards from the south of Germany,

Maik

Well, the first answer is NO - but it depends...

The KRT2 uses an RS232 interface for communication. RS232 is by definition a point-to-point connection, not a bus system.

This standard can be extended to one transmitter and N receivers without any problems, as long as the output of the transmitter is not overloaded. This is called multi-drop. For us this means: A BLE module sends to several RX devices via TX without problems.

It doesn't work the other way around. Multiple transmitters cannot transmit to one receiver, for 2 reasons: 

1.) The outputs of the transmitters work electrically against each other, which is like a short circuit.

2.) If both transmitters transmit at the same time, the data becomes unreadable (corrupted).

But no problem without a solution or at least a workaround...

The simplest solution is 2 diodes. These are connected to the TX lines to prevent a short circuit. This means that the V24 levels are no longer 100% correct, but it usually works.

You can improve the result with a pullup resistor. But I wouldn't use this DIY solution for an avionics device.

And here comes the solution:
The KRT2 BLE adapter from SD-Link mentioned above has 2 independent RS232 channels internally. Normally only one RS232 channel is used to output the received BLE command to the radio and to pin 13 of the outside connector. But that can be reprogrammed, to use pin 13 as an isolated RS232-input as well.

Then both signals are ORed with the correct V24 levels and passed on to the radio.

You just have to make sure that both sources are not transmitting at the same time. Does the Air Control Display transmit constantly or only when the frequency changes? SD is transmitting only, when a frequency is changed.

Best regards from the east of Germany

Michael

Michael,

thanks a lot for this detailed answer.

Right now I do not know if the air control display transmits constantly. But I try to investigate in the documentation.

What I know is, that the communication with the Krt2 is bidirectional because changes on the KRT2 will also be displayed on the air control display. So RX and TX are both used from my point of view.

I am not sure if I got you correct: you mean when reprogramming the adapter to use pin 13 as a separate RS232 chanel it will receive the commands from the air control display on pin 13 and forwards it on the other chanel to the pin of the KRT2?

Regards

Maik

https://www.air-avionics.com/?wpdmpro=air-control-display-57-installationshandbuch&lang=de&wpdmdl=982&refresh=677c30e3e002b1736192227

I am not sure, but for me it sounds like it is only transmitting when a change has been performed.

Regards Maik

+x

 

urbino - 1/5/2025 8:13:27 PM

+x

 

Paul Milling - 12/30/2024 4:52:47 PM

Does the IRXON device need to have a ground wire on the 9 Pin D-Sub given that the device itself has its own power (ie., battery) or it can be powered by a USB cable connected to a panel-mounted USB charger outlet which is already grounded?

Just checking as I'm planning to connect it to my Trig TC90 Head and wanted to know if I just needed an RX/TX data wire.

Dear Paul, 

I am not a specialist, but just received the IRXON BT578 v.3, and just tested it with the SkyD iOS app (Tx/Rx still not connected to the radio, though).

It worked perfectly with power from a USB-C charger, as per the product notice. So I assume a ground wire is not required for powering the IRXON. My understanding is that the data wire will be enough with my Trig, but cannot confirm this until actually testing - hopefully next month. 

Hope this helps !

+x

 

maikmita - 1/6/2025 7:45:19 PM

+x

 

maikmita - 1/6/2025 7:34:16 PM

+x

 

Michael Hoffmann - 1/6/2025 6:58:52 PM

+x

 

maikmita - 1/6/2025 3:02:49 PM

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

Hello

 Michael,

very interesting solution. I am using the Krt2 in combination with the Air Control Display from Air Avionics, which functions as a remote control for the KRT2.

I am wondering if your solution would be able to operate in between those two devices or if I would need to place a switch in between to decide whether the BT or the air control display is connected to the KRT2?

Best regards from the south of Germany,

Maik

Well, the first answer is NO - but it depends...

The KRT2 uses an RS232 interface for communication. RS232 is by definition a point-to-point connection, not a bus system.

This standard can be extended to one transmitter and N receivers without any problems, as long as the output of the transmitter is not overloaded. This is called multi-drop. For us this means: A BLE module sends to several RX devices via TX without problems.

It doesn't work the other way around. Multiple transmitters cannot transmit to one receiver, for 2 reasons: 

1.) The outputs of the transmitters work electrically against each other, which is like a short circuit.

2.) If both transmitters transmit at the same time, the data becomes unreadable (corrupted).

But no problem without a solution or at least a workaround...

The simplest solution is 2 diodes. These are connected to the TX lines to prevent a short circuit. This means that the V24 levels are no longer 100% correct, but it usually works.

You can improve the result with a pullup resistor. But I wouldn't use this DIY solution for an avionics device.

And here comes the solution:
The KRT2 BLE adapter from SD-Link mentioned above has 2 independent RS232 channels internally. Normally only one RS232 channel is used to output the received BLE command to the radio and to pin 13 of the outside connector. But that can be reprogrammed, to use pin 13 as an isolated RS232-input as well.

Then both signals are ORed with the correct V24 levels and passed on to the radio.

You just have to make sure that both sources are not transmitting at the same time. Does the Air Control Display transmit constantly or only when the frequency changes? SD is transmitting only, when a frequency is changed.

Best regards from the east of Germany

Michael

Michael,

thanks a lot for this detailed answer.

Right now I do not know if the air control display transmits constantly. But I try to investigate in the documentation.

What I know is, that the communication with the Krt2 is bidirectional because changes on the KRT2 will also be displayed on the air control display. So RX and TX are both used from my point of view.

I am not sure if I got you correct: you mean when reprogramming the adapter to use pin 13 as a separate RS232 chanel it will receive the commands from the air control display on pin 13 and forwards it on the other chanel to the pin of the KRT2?

Regards

Maik

https://www.air-avionics.com/?wpdmpro=air-control-display-57-installationshandbuch&lang=de&wpdmdl=982&refresh=677c30e3e002b1736192227

I am not sure, but for me it sounds like it is only transmitting when a change has been performed.

Regards Maik

+x

 

Michael Hoffmann - 1/4/2025 4:36:32 PM

+x

 

bsdchapman - 1/4/2025 2:41:07 PM

+x

 

Michael Hoffmann - 12/22/2024 8:16:04 PM

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!

Hello dear community,

the prototype of a TQ KRT2 BLE PnP (PlugAndPray ) adapter is ready. 

The advantage of this dongle is that it is powered by the device itself.
You don't need any additional wiring. The size is (40 x 45 x 17) mm. Unfortunately I can't make it any smaller.
Simply plug this dongle between your existing cables - and you're done.
Yes, the correct mounting brackets are included with the final version...
I don't have them in stock yet. The screws aren't the right ones either...but that will be solved too.

It is important that the electronics work in this small space. She does.
Unfortunately I don't have a KRT2 to test and am therefore looking for a willing tester.
Is there anyone with a TQ KRT2 who can test this dongle? I'm looking for a tester in Germany, preferably in the Berlin area.

If you can and want to help here, send me a PM.

Can’t help with basic testing (I’m UK based), but would be interested in this as a beta or finished product.  The KRT2 is the worst UX I’ve ever come across for a radio!

Also wonder if you would be able to create a package with just 12v / Gnd / Tx / Rx interface - maybe 2-3 RS232 outputs, so we can fit one box, behind the panel, plumbed straight into the electrics (no 5v/usb), with multiple data outputs to run to radios, autopilot, and anything else that would be benefit from a one way data stream?

Hello Bsdchapman,

thanks for your answer. I have now received a KRT2 from a colleague and was able to test the adapter. Yes, it works. The KRT2 adapter simply plugs between the existing wiring and the radio and is powered by the radio's power supply itself. 

No additional wiring or mechanical work required. Something like PnP (Plug and Pray) ;-)).

Look here:

At pin 13 of the connector, the RS-232 output is available for other devices (true V24 voltage) such as autopilots, AV-30, other radios or whatever else comes along. The adapter works in the voltage range of 8 - 30 V and is short-circuit proof.

Is that what you're looking for? Or do you really want a separate box with its own power supply and multiple outputs?

Regards

Michael

+x

 

Diplomat - 1/18/2025 12:55:32 PM

Hello, first of all, Michael's BLE adapter for the Becker works great. While I'm not lazy when it comes to soldering, the adapter is ultimately a quick and very well-thought-out solution that saved me the trouble of gathering all the components. The frequency switching works perfectly. His website is: sdlink.de

Now, another question: I'm considering connecting Skydemon to my Stratux via BLE in the future since I occasionally experience disconnects with automatic reconnects when using WiFi-Direct. Before I keep experimenting: Can Android 14 with Skydemon (latest beta) actually maintain two BLE connections simultaneously—one to the BLE adapter for frequency switching and one to the Stratux? Has anyone already tested this?

+x

 

Diplomat - 1/18/2025 12:55:32 PM

Hello, first of all, Michael's BLE adapter for the Becker works great. While I'm not lazy when it comes to soldering, the adapter is ultimately a quick and very well-thought-out solution that saved me the trouble of gathering all the components. The frequency switching works perfectly. His website is: sdlink.de

Now, another question: I'm considering connecting Skydemon to my Stratux via BLE in the future since I occasionally experience disconnects with automatic reconnects when using WiFi-Direct. Before I keep experimenting: Can Android 14 with Skydemon (latest beta) actually maintain two BLE connections simultaneously—one to the BLE adapter for frequency switching and one to the Stratux? Has anyone already tested this?

+x

 

Michael Hoffmann - 1/31/2025 9:15:13 PM

+x

 

Diplomat - 1/18/2025 12:55:32 PM

Hello, first of all, Michael's BLE adapter for the Becker works great. While I'm not lazy when it comes to soldering, the adapter is ultimately a quick and very well-thought-out solution that saved me the trouble of gathering all the components. The frequency switching works perfectly. His website is: sdlink.de

Now, another question: I'm considering connecting Skydemon to my Stratux via BLE in the future since I occasionally experience disconnects with automatic reconnects when using WiFi-Direct. Before I keep experimenting: Can Android 14 with Skydemon (latest beta) actually maintain two BLE connections simultaneously—one to the BLE adapter for frequency switching and one to the Stratux? Has anyone already tested this?

Yay, good news! The iOS version for release 4.0.2.0 is available. The Becker AR620X can now also be controlled from the iPad. Thanks Tim.

I don't know if I should say it like this here, but there is a site that lists all kinds of adapters for radios related to SkyDemon. 

I know this is advertising. I ask for forgiveness.

www.SDlink.de

Cheers.

+x

 

Clive - 2/20/2025 8:51:32 AM

Just read all 19 pages....

Great work all of you. 

My hangar mate has all the hardware installed and the BT unit is flashing at the right times and all looks good. We have the tablet looking like it is sending the radio freq to the radio but there is no reaction on the radio. 

My question is:

is the black banner that flashes across the SkyD screen when you send a freq coming back from the radio or is it SkyD derived? 

The Radio is a Filser 833AT or what ever. There is nothing in it's menu of manual referring to 232 inputs so I can't find anything in the radio that might need 'setting up', everything on the tablet end looks fine.

Has anyone got a Filser radio working with the Freq transfer? 

thanks Clive

+x

 

Clive - 2/20/2025 8:51:32 AM

Just read all 19 pages....

Great work all of you. 

My hangar mate has all the hardware installed and the BT unit is flashing at the right times and all looks good. We have the tablet looking like it is sending the radio freq to the radio but there is no reaction on the radio. 

My question is:

is the black banner that flashes across the SkyD screen when you send a freq coming back from the radio or is it SkyD derived? 

The Radio is a Filser 833AT or what ever. There is nothing in it's menu of manual referring to 232 inputs so I can't find anything in the radio that might need 'setting up', everything on the tablet end looks fine.

Has anyone got a Filser radio working with the Freq transfer? 

thanks Clive

+x

 

john123 - 2/17/2025 2:18:53 PM

Hi, Does anyone have any information of how to upload frequencies to the Icom A220TSO? It does have a TXD and RXD pins on its 25way D and it also mentions that it can get frequency data from Garmin GPS units. I have spoken to Icom support but they don't know anything useful. On the older Icom units there was a stereo 2.5mm jack that had the serial lines but apparently the 2.5mm jack on the A220TSO is for Aux Audio??? Anyone can help?

+x

 

john123 - 2/23/2025 10:19:04 PM

Hi Sean I would be interested in your spare BT758

+x

 

Petertel - 2/20/2025 1:39:06 PM

Hello, first I introduce myself since it is my first intervention in this forum. My name is Pedro, I am from Spain, I have an ultralight plane and I like to fly and program my own instruments for my plane.

I am building the Bluetooth adapter to be able to send the autopilot information from Skydemon to an old TRUTRAK DIGIFLIGHT II autopilot but it is not capable of recognizing the NMEA sentences that the Skydemon sends it.

I have been analyzing the NMEA sentences that the Garmin GPSMAP 296 GPS sends and they are like this:

$GPRMC,111231,A,4041.3941,N,00036.84755,W,0.0,227.3,190225,0.8,W,D*11
$GPRMB,A,0.00,R,,EDNT,4859.7560,N,01053.0926,E,656.923,44.7,,V,D*41
$GPRMC,111232,A,4041.3941,N,00036.84755,W,0.0,227.3,190225,0.8,W,D*12
$GPRMB,A,0.00,R,,EDNT,4859.7560,N,01053.0926,E,656.923,44.7,,V,D*41
$GPRMC,111233,A,4041.3941,N,00036.84755,W,0.0,227.3,190225,0.8,W,D*13
$GPRMB,A,0.00,R,,EDNT,4859.7560,N,01053.0926,E,656.923,44.7,,V,D*41

However, the NMEA sentences that Skydemon currently throws are like this:

$GPRMC,111343,A,41$GPRMB,A,0.76,R,OR$GPRMC,111344,A,41$GPRMB,A,0.76,R,OR$GPRMC,111345,A,41$GPRMB,A,0.76,R,OR$GPRMC,111346,A,41$GPRMB,A,0.76,R

That is, the NMEA frames of the Skydemon are missing all the information fields and also do not end with CR+LF (0x0D + 0x0A) so the TRUTRAK autopilot is not able to interpret the NMEA sentences correctly.

Could you please check and correct it.

PD.-
Thank you very much Tim for having implemented the new Bluetooth functions, it is something that has been needed for a long time to be able to use Skydemon as the main route planning source.

+x

 

Tim Dawson - 2/24/2025 11:49:45 AM

Petertel and Ben, SkyDemon is sending full sentences but clearly they are being truncated somewhere. Are you on Android or iOS?

Petertel I look forward to hearing the results of your test. It's possible there is a MTU related problem where everything we send after the first X characters is simply being discarded.

+x

 

Tim Dawson - 2/24/2025 11:49:45 AM

Petertel and Ben, SkyDemon is sending full sentences but clearly they are being truncated somewhere. Are you on Android or iOS?

Petertel I look forward to hearing the results of your test. It's possible there is a MTU related problem where everything we send after the first X characters is simply being discarded.

+x

 

Petertel - 2/25/2025 10:42:17 AM

+x

 

Tim Dawson - 2/24/2025 11:49:45 AM

Petertel and Ben, SkyDemon is sending full sentences but clearly they are being truncated somewhere. Are you on Android or iOS?

Petertel I look forward to hearing the results of your test. It's possible there is a MTU related problem where everything we send after the first X characters is simply being discarded.

  Hello, I am using a Samsung Galaxy S20 mobile with Android 13 but I have also tried with 2 older Android tablets and the results are the same.
     I have been finding out that the MTU of the CC2541 bluetooth modules that are used by the HM-10 is 20 bytes, but the datasheet clearly indicates that the data packet that can be sent is larger and the module is responsible for packetizing and sending all the data on its own, so this should not be the problem. And the truncated data is exactly 18 bytes in all error frames.

  Additionally, I have tried using an app like nRF to send a data packet much larger than 20 bytes to the HM-10, and it receives all the data perfectly.

   And finally, with the tests that Michael has been able to do with various HM-10 models and Android and iPad, it is very curious how the MLT-08 works well with Android and iPad.

  Michael, can you look at what Bluetooth chip have each of the 3 modules you have tested have?. It is possible that the problem is there.

Regards, Peter.

+x

 

Petertel - 2/25/2025 8:08:25 PM

Hello, I received the DSD TECH module this afternoon and I just did the tests. The result is this with android phone:

$GPRMC,192851,A,4200.7607,N,00333.3039,W,0.0,-18.7,250225,0.0,E,A*19
$GPRMB,A,9.99,L,LETO,LEVD,4142.3667,N,00451.1167,W,178.673,272.2,0.0,V,A*46
$GPRMC,192852,A,4200.7629,N,00333.3044,W,0.0,-18.1,250225,0.0,E,A*1A
$GPRMB,A,9.99,L,LETO,LEVD,4142.3667,N,00451.1167,W,178.673,272.2,0.0,V,A*46
$GPRMC,192853,A,4200.7659,N,00333.3005,W,0.0,-17.8,250225,0.0,E,A*1F
$GPRMB,A,9.99,L,LETO,LEVD,4142.3667,N,00451.1167,W,178.676,272.2,0.0,V,A*43

That is, it works perfectly and does not truncate the data.

This is the HM-10 clone module that has the CC2541 chip, it does not work well.

And this is the DSD TECH HM-18 chip, a CC2640.

Now I'm almost sure that it may be a problem with the module's firmware, I'm going to see if I could change the firmware version of the HM-10, although it will be difficult since it is not original but a clone.

Regards.

+x

 

vikino - 9/24/2024 5:35:42 PM

Hello Tim,

have you got any time schedule about programming ability to send AP+COM and receive traffic via single BT-RS232? Just to know if i should wire second BT device or you can get it to work in near future?

Vitek

+x

 

Dortro - 12/21/2024 7:53:40 AM

Hi Michael,Thank you very much for both answers, this is very helpful!I was thinking to wire my BT580 to the KRT2 plug, following the diagram for connecting the remote. Your second suggestion sounds very good and, indeed, clean. Would it be expensive?My problem now is that my BT580 ls not detected by SD! I am mailing with Support about it.One of those things, it should detect the device almost immediately, but it does not…Again, thank you!