Hi all,
I'm trying to cut down on cables and move to a single cable ppm input on the APM 2.5.
I have the input coming into input 1 and a jumper on between the singles on pin 2 and 3.
I have the output coming out of the openlrsng receiver on pin 6 (channel 5) and set this up as PPM using the configuration.
Where am I going wrong?
Replies
Thank you for creating the custom firmware.
I will try it out tomorrow and report back.
Thanks!
any progress with setting up ppm?
Could be due to the OpenLRS generating a falling edge for PPM instead of a rising (pause is high and pulses are low).
The other problem could be the OpenLRS Telemetry generating to much noise on the output pin.. I have exactly the same HobbyKing Module and hooked it up to a scope (because i have similar problems with multiwii): https://www.youtube.com/watch?v=vw5nMU4zotQ
have you configured the RX to output PPM on that pin?
The Pin is the right one b.t.w.
If you have anything other than 8-channels in your Tx settings, try setting 'Limit PPM Output to 8 channels' in Rx settings to yes. APM doesn't like PPM streams with +8 channels. It works on any of my dtfuhf receivers I tried, should work with HK ones too.
I don't know what's wrong, but I can point you to this other firmware and detailed setup instructions. I'm flying 12 km with it with full APM telemetry and RC support.
http://www.itluxembourg.lu/site
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