Autopilot + COM freq. over BT to RS232

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Autopilot + COM freq. over BT to RS232

Author	Message
Tim Dawson	Tim Dawson posted 4/22/2025 9:24:23 AM Post Details Share Post
Group: Forum Members Posts: 8.2K, Visits: 9.6K	Can you give me an example of a frequency that results in a crash?
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norland	n norland posted 4/20/2025 7:21:39 PM Post Details Share Post
n Group: Forum Members Posts: 10, Visits: 0	Think I've spotted a bug in the AR6201 interface. Some airports around here have ATIS on NAV frequencies, not COM. If I send that frequency to the radio without realising it was not a valid COM frequency, Skydemon crashes and I have to restart it. No error messages, just goes back to the iPad desktop. Reopen Skydemon and everything working again from the point it dropped out. Looks like a check is needed to only send valid frequencies to the radio?
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Linoair	L Linoair posted 4/20/2025 3:28:02 PM Post Details Share Post
L Group: Forum Members Posts: 5, Visits: 0	+x Michael Hoffmann - 4/20/2025 12:00:27 PM +x Linoair - 4/19/2025 8:53:46 AM +x Final glide - 12/26/2024 7:00:01 PM Hi ulli It is super simple pins 1,2,and 9 for the av-30 And that’s it select autopilot and all on the SD it does 9600 bad automatically You can test by using the simulator function on SDBrilliant system !!!!! Hi Final Glide, we have an installation with one iPad (running SD), one AV-30 and one KRT2. We just bought a BT dongle to send frequencies to the KRT2. Did you manage to use the same dongle to simultaneously transfer Nav data from SD to the AV-30? That would be really amazing. Or do you need a second BT Adapter for the AV30??? Thank you in advance, Stephan The data streams must be isolated. The data from the autopilot must not reach the KRT2, otherwise the radio will misinterpret it and no longer function correctly. So either 2 separate adapters, or separate the data streams using a microcontroller and output them to 2 different ports. I think the solution with 2 BLE adapters is simpler, cleaner and cheaper. Dear Final Glide and dear Michael, thank you for your quick response. @Michael: The experience with the KRT 2 SD-Link (quality, installation effort, documentation and also pricing) was so great, that I would definitely also buy your AV-30 Adapter as soon as it is available. Do you think it might be possible to use it on top of the AV-Link Wifi-Adapter, which receives our GDL90 Traffic Data Stream? I think AV Link uses a different Pin to transfer the traffic data to the AV-30!? I did not expect, the all this might be available :-) Happy Easter, Stephan Edited 4/20/2025 6:08:42 PM by Linoair
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Michael Hoffmann	Michael Hoffmann posted 4/20/2025 12:00:27 PM Post Details Share Post
Group: Forum Members Posts: 48, Visits: 23	+x Linoair - 4/19/2025 8:53:46 AM +x Final glide - 12/26/2024 7:00:01 PM Hi ulli It is super simple pins 1,2,and 9 for the av-30 And that’s it select autopilot and all on the SD it does 9600 bad automatically You can test by using the simulator function on SDBrilliant system !!!!! Hi Final Glide, we have an installation with one iPad (running SD), one AV-30 and one KRT2. We just bought a BT dongle to send frequencies to the KRT2. Did you manage to use the same dongle to simultaneously transfer Nav data from SD to the AV-30? That would be really amazing. Or do you need a second BT Adapter for the AV30??? Thank you in advance, Stephan The data streams must be isolated. The data from the autopilot must not reach the KRT2, otherwise the radio will misinterpret it and no longer function correctly. So either 2 separate adapters, or separate the data streams using a microcontroller and output them to 2 different ports. I think the solution with 2 BLE adapters is simpler, cleaner and cheaper.
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IO390	I IO390 posted 4/20/2025 9:24:32 AM Post Details Share Post
I Group: Forum Members Posts: 3, Visits: 0	The software on the standalone version of my BT module supports routing certain message formats to each serial port, so in theory you could connect a Funke radio and an AV30 to just the one BT module. I’ve not got any equipment to test this though (my aircraft has a G3X and one Trig radio) so I can’t sell it without a full shakedown and test.
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Linoair	L Linoair posted 4/19/2025 8:53:46 AM Post Details Share Post
L Group: Forum Members Posts: 5, Visits: 0	+x Final glide - 12/26/2024 7:00:01 PM Hi ulli It is super simple pins 1,2,and 9 for the av-30 And that’s it select autopilot and all on the SD it does 9600 bad automatically You can test by using the simulator function on SDBrilliant system !!!!! Hi Final Glide, we have an installation with one iPad (running SD), one AV-30 and one KRT2. We just bought a BT dongle to send frequencies to the KRT2. Did you manage to use the same dongle to simultaneously transfer Nav data from SD to the AV-30? That would be really amazing. Or do you need a second BT Adapter for the AV30??? Thank you in advance, Stephan
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norland	n norland posted 4/17/2025 6:56:43 PM Post Details Share Post
n Group: Forum Members Posts: 10, 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: 48, Visits: 23	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: 48, Visits: 23	+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: 6, Visits: 19	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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