Autopilot + COM freq. over BT to RS232

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Autopilot + COM freq. over BT to RS232

Author	Message
norland	n norland posted Yesterday @ 6:56 PM Post Details Share Post
n Group: Forum Members Posts: 7, Visits: 0	My homebrew version is working fine on the Becker AR6201, thanks to the technical info posted earlier on the thread by Michael, so thanks for that👍
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Michael Hoffmann	Michael Hoffmann posted 4/15/2025 6:59:44 PM Post Details Share Post
Group: Forum Members Posts: 42, Visits: 10	For anyone planning to feed a KRT2 radio and an autopilot/AV-30 through the same BLE adapter, it won't work. Why? The data for the autopilot interferes with the KRT2 because it misinterprets it. The autopilot works, but the KRT2 radio no longer works reliably. The only solution I see for this problem is two separate BLE adapters. It doesn't matter whether you do this with a BLE V4 or V5 adapter. Believe me, we learned the hard way. Life is a barrel of fun, but sometimes a barrel full of "Sauerkraut". Michael
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Michael Hoffmann	Michael Hoffmann posted 4/15/2025 5:54:30 PM Post Details Share Post
Group: Forum Members Posts: 42, Visits: 10	+x fpsrj - 4/15/2025 5:00:03 PM Hello All, I am shure that this function will change my live at the left seat in front row . Today, for cross-country flights in central/western (continental) Europe, it is the most often touched knob to adjusted a new / other frequency for flying VFR on FL 65 to 135. I installed the IRXON BT 578 V31 as recommended (from Mini Ipad (Bionic Chip) --> BLE-->IRXCOM Pin 3--> to Pin 13 at DB15 for TQ KRT2 OLED VHF Radio) The setup on SD was straight forward (RADIO, to STBY). The process works: - SD confirm the envoy - IRXCOM flash the LED - KRT2 does nothing, even after cycling or reboot all once The wiring is ok, the IRXCOM was in delivery configuration. I twice checked 5V DC, signal, ground for this wiring. Baudrate for TQ (ex. Dittel) KRT2 series OLED VHF Radio?? I was asking TQ Support about this, and if the interface is only working from a specific Firmware. They sent me the following answer (translated in english for you): - the RS232 Interface works on all KRT2 since the beginning - the default baud rate is 115200 - this Baud rate can not be modified In the mean time - waiting for TQ's answer- I found this document: This describes the communication link btw the radio and a offset header display (e.g. for tandem seaters). This document contains the interface specifications for the RS232 serial connection between the KRT2-F/S/S2/L/P transceiver (herein “radio module”) and a remote control unit (herein “remote module”) e.g. the KRT2-D remote head module. 1. Remote Interface Overview The data format for the serial communication is as follows: Baud rate 9600 , Data bits 8 , Stop bits none , Parity none , Handshake none Troubleshooting any ideas? actually I plan to - reset IRXCOM within the tool BT578_Tester - test with a) 9600 baud then b) the max Baud rate hope it comes to work... happy flying Cosy Hi Cosy, 9600,8,N,1 is the correct baudrate to use with the KRT2. Did you connect the ground wire too? Regards Michael
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fpsrj	f fpsrj posted 4/15/2025 5:00:03 PM Post Details Share Post
f Group: Forum Members Posts: 2, Visits: 6	Hello All, I am shure that this function will change my live at the left seat in front row . Today, for cross-country flights in central/western (continental) Europe, it is the most often touched knob to adjusted a new / other frequency for flying VFR on FL 65 to 135. I installed the IRXON BT 578 V31 as recommended (from Mini Ipad (Bionic Chip) --> BLE-->IRXCOM Pin 3--> to Pin 13 at DB15 for TQ KRT2 OLED VHF Radio) The setup on SD was straight forward (RADIO, to STBY). The process works: - SD confirm the envoy - IRXCOM flash the LED - KRT2 does nothing, even after cycling or reboot all once The wiring is ok, the IRXCOM was in delivery configuration. I twice checked 5V DC, signal, ground for this wiring. Baudrate for TQ (ex. Dittel) KRT2 series OLED VHF Radio?? I was asking TQ Support about this, and if the interface is only working from a specific Firmware. They sent me the following answer (translated in english for you): - the RS232 Interface works on all KRT2 since the beginning - the default baud rate is 115200 - this Baud rate can not be modified In the mean time - waiting for TQ's answer- I found this document: This describes the communication link btw the radio and a offset header display (e.g. for tandem seaters). This document contains the interface specifications for the RS232 serial connection between the KRT2-F/S/S2/L/P transceiver (herein “radio module”) and a remote control unit (herein “remote module”) e.g. the KRT2-D remote head module. 1. Remote Interface Overview The data format for the serial communication is as follows: Baud rate 9600 , Data bits 8 , Stop bits none , Parity none , Handshake none Troubleshooting any ideas? actually I plan to - reset IRXCOM within the tool BT578_Tester - test with a) 9600 baud then b) the max Baud rate hope it comes to work... happy flying Cosy
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IO390	I IO390 posted 4/8/2025 11:48:34 AM Post Details Share Post
I Group: Forum Members Posts: 1, Visits: 0	I've been following this for a few months and, as some others, decided that wiring in a generic BT-RS232 has its limitations. Since I have a Trig TY91 radio I opted to design a plug and play unit for this radio. This module has the benefit of having two RS232 ports, one to talk to the trig and another to talk to other devices such as an EFIS or Autopilot. The data packets are handled such that they will be buffered and forwarded on uninterrupted, even if data arrives at the same time on multiple ports. This prevents any chance of packets being corrupted which can happen when you simply connect two devices to one serial port. There is a Wifi access point which by default is only active for 100 seconds after device power up, and on the webpage you can choose baud rate for each serial port as well as select where data from each source is routed. You can also specify the device BLE/Wifi name, and also I have included Over The Air firmware updates so if the Skydemon BLE implementation is updated in future with more features, you'll be able to upload a new firmware file without having to remove or touch the module. Hardware and software is fully custom as with the Swedish option posted above, and the casing is CNC machined aluminium, anodised black. The casing mounts to the back of the Trig radio in such a way that it fully strain relieves the connector on the Trig, which is already a weak design and should not have any extra leverage applied. The same hardware also supports a standalone version however this is not yet available for sale as I am still refining some extra features on this version. The advantage of this standalone BLE module is that you can connect two totally different devices on different baud rates. The modules are available for sale here, and the initial batch will be about 3-4 days for dispatch from the time of ordering. https://prodimex.co.uk/products/simpleble-for-trig-ty91-and-ty92-radios Edit: Forgot to mention, but this will only work on firmware 1.5 and up on the Trig radios. 1.5 is already really old so if you had your unit updated in the last few years, it'll be fine. Edited 4/8/2025 12:16:11 PM by IO390
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Mikael Markow	M Mikael Markow posted 3/27/2025 8:06:03 PM Post Details Share Post
M Group: Forum Members Posts: 6, Visits: 0	+x ALSL-Flyer - 3/27/2025 12:57:03 PM +x Mikael Markow - 3/23/2025 5:10:57 PM +x 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: http://www.utronix.se/Aviation 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.
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ALSL-Flyer	A ALSL-Flyer posted 3/27/2025 1:11:25 PM Post Details Share Post
A Group: Forum Members Posts: 12, Visits: 1	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?
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ALSL-Flyer	A ALSL-Flyer posted 3/27/2025 12:57:03 PM Post Details Share Post
A Group: Forum Members Posts: 12, Visits: 1	+x Mikael Markow - 3/23/2025 5:10:57 PM +x 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: http://www.utronix.se/Aviation 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?
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Mikael Markow	M Mikael Markow posted 3/23/2025 5:10:57 PM Post Details Share Post
M Group: Forum Members Posts: 6, Visits: 0	+x 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: http://www.utronix.se/Aviation 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.
	Reply Like 0
Mikael Markow	M Mikael Markow posted 3/20/2025 9:48:16 PM Post Details Share Post
M Group: Forum Members Posts: 6, Visits: 0	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: http://www.utronix.se/Aviation 10 first customers get 50% discount :-) \Mikael P.S. I have been working professionally as electronics designer for 40 years.
	Reply Like 0