GPS source from Garmin Transponder

[jaredyates]

Jared,

If that didn’t work, you can try this SkyView setting. Set the SkyView settings for serial port 5, to POS 1, and the input device to NMEA basic, and the baud rate to 38,400.

See if that works. The ADS-B GPS string might not be correct, and then nothing from the 355 will work. If it had a aviation format, that should work, but the manual doesn’t show that format output.

If you just don’t want to drill more holes in you skin, the GPS250 is pretty sensitive, you can mount it on the dash, and some mount it under the engine cowling, with good results, but Dynon doesn’t recommend it due to the heat. You could mount it in the wingtip so it won’t show. A lot of places available, to avoid more holes.

Brian

Hi Brian @HR2PLT , Thanks again for your help on this. It took a while to get everything connected up but I was able to test it today. I started with your first suggestion, which was the ADS-B+ Format 2 on the Garmin's Serial 2 output, and GPS250 on the Skyview's serial 5. It isn't working yet but I think I might be close.

On the Skyview setup menu, the RX count is iterating, so I feel like that probably validates the wires and pins:

Interestingly, there are also some error counts there, sentence errors and group errors. No "good sentences" but not sure what that means.
I called the Garmin folks and they confirmed that the baud rate for the ADS-b+format 2 is the right baud rate.
Next I tried Generic NMEA on the Dynon side, and set the baud rate to 38400:

Looks to be pretty similar results.
No GPS position yet but it does look like they are talking. Let me know if you have any thoughts or suggestions based on this data please!