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Autopilot + COM freq. over BT to RS232


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Mikael Markow
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ALSL-Flyer - 3/27/2025 12:57:03 PM
Mikael Markow - 3/23/2025 5:10:57 PM
Mikael Markow - 3/20/2025 9:48:16 PM
Hello aviation friends!

I have made a device for Bluetooth connection between radio and SD device.
I wanted something solid and reliable but couldn´t find anything I liked so I made the product I wanted for aviation. Now it is available for everyone :-)

It a small, robust and molded to protect from environment. It is protected from over voltages and have a fixed cable. It can be powered from 4 to 30 Volts. It communicates with RS232-levels. A solution that lasts.

It can be bought here:

10 first customers get 50% discount :-)

\Mikael

P.S.
I have been working professionally as electronics designer for 40 years.


By the way, I have written the firmware for this device and can if needed modify it for coming needs. The firmware can be updated over Bluetooth.

Hi Mikael, ...the connector doesn´t fit at all - at least on the pictures. How do you connect your device? 


Different radios (and AP) have different connectors.
The normal way of connecting to them is by soldering/crimping necessary wires to the connector that plugs in to the radio.

So, for a normal installation you have to connect three (or four) wires to that connector. In the same way as you connect wires for headset, PTT, power etc. to the connector.

With Aviation Companion two alternatives are suggested:
1) Cut off the small connector and solder/crimp the wires to the radio’s connector. This gives an compact solution. If your radio has nothing else attached to the connector this is the way to go.
or
2) Solder/crimp the enclosed extension cable to radios connector and plug Aviation Companion in to the extension cable. This gives a solution where the Aviation Companion easily can be detached from not only the radio but also from the wiring harness too.

The small connector is carefully selected for small dimensions and low weight to match Aviation Companion.
The RS422 version comes with open wire ends or optionally with connector for Becker AR6201.


ALSL-Flyer
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Hi Tim,
we are still struggling with transmitting GPS and traffic to our devices. GPS is working perfect, and traffic is 80% accurate - everything is coming through, but the airplane icon isn't showing. I've been in contact with Hannah, but we're not making any progress. Could you please help us?

ALSL-Flyer
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Mikael Markow - 3/23/2025 5:10:57 PM
Mikael Markow - 3/20/2025 9:48:16 PM
Hello aviation friends!

I have made a device for Bluetooth connection between radio and SD device.
I wanted something solid and reliable but couldn´t find anything I liked so I made the product I wanted for aviation. Now it is available for everyone :-)

It a small, robust and molded to protect from environment. It is protected from over voltages and have a fixed cable. It can be powered from 4 to 30 Volts. It communicates with RS232-levels. A solution that lasts.

It can be bought here:

10 first customers get 50% discount :-)

\Mikael

P.S.
I have been working professionally as electronics designer for 40 years.


By the way, I have written the firmware for this device and can if needed modify it for coming needs. The firmware can be updated over Bluetooth.

Hi Mikael, ...the connector doesn´t fit at all - at least on the pictures. How do you connect your device? 

Mikael Markow
M
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Mikael Markow - 3/20/2025 9:48:16 PM
Hello aviation friends!

I have made a device for Bluetooth connection between radio and SD device.
I wanted something solid and reliable but couldn´t find anything I liked so I made the product I wanted for aviation. Now it is available for everyone :-)

It a small, robust and molded to protect from environment. It is protected from over voltages and have a fixed cable. It can be powered from 4 to 30 Volts. It communicates with RS232-levels. A solution that lasts.

It can be bought here:

10 first customers get 50% discount :-)

\Mikael

P.S.
I have been working professionally as electronics designer for 40 years.


By the way, I have written the firmware for this device and can if needed modify it for coming needs. The firmware can be updated over Bluetooth.
Mikael Markow
M
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Hello aviation friends!

I have made a device for Bluetooth connection between radio and SD device.
I wanted something solid and reliable but couldn´t find anything I liked so I made the product I wanted for aviation. Now it is available for everyone :-)

It a small, robust and molded to protect from environment. It is protected from over voltages and have a fixed cable. It can be powered from 4 to 30 Volts. It communicates with RS232-levels. A solution that lasts.

It can be bought here:

10 first customers get 50% discount :-)

\Mikael

P.S.
I have been working professionally as electronics designer for 40 years.
Tim Dawson
Tim Dawson
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It's working in the 4.1 branch of SkyDemon but I don't know when that will be released yet. Sometime in the next few months.
vikino
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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

Hello Tim, are there some news about this?
Vitek

Petertel
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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.


     Hello, very good news. This weekend I was able to test the new DCD TECH module with the CC2640 chip and it works perfectly with a TRUTRACK DIGIFLIGHT II autopilot and with a Garmin GTR225 radio.
   With these latest tests, we can confirm that if the NMEA sentences come out well on the workbench without truncating, it is certain that they will work well on the plane.

Greetings.

Michael Hoffmann
Michael Hoffmann
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In response to the issues we were experiencing with truncated autopilot data sets, we decided to switch to Bluetooth 5.0. The Generic (Universal) Adapter is now the first SD-Link adapter to be delivered with BLE V5.0. The other products will follow. To be clear, setting radio frequencies also works with BLE V4.0 without any problems.





Ben
Ben
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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.



My setup was tested with both iOS and iPadOS.
Also, I added the line breaks into the post. The raw data didn’t contain any CR/LF.
GO

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