APM PPM from openlrsng

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?

3691098854?profile=original

3691098909?profile=original

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

          • Hi Ben,

            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.

    YouTube
  • 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

This reply was deleted.

Activity