I use Arducopter APM 2.8 (I have no problem except that I can use only the firmware 3.2.1 on it, but it is normal). I bought a telemetry radio r/t, I have fix green light on both, I can use APM Planner 2.0 to connect on it with difficulties (I have to unplug every thing, put a delay of 5 seconds in parameters for the telemetry, and then plug the receiver, waiting, start arducopter, waiting 15 seconds… then 3/ times on 4 it works…) but I lost connection after less than 1 minutes… impossible to reconnect, I have to unplug it …
It is like the Flight controler doesn’t send data, the telemetry transmiter and receiver can communicate (I can change the configuration and green leds are still fix).
I don’t plug any ESC on it, but I plus Receiver for RC, GPS, Compass, power with sensor, and telemetry.
When I unplug the telemetry and plug the usb only to the computer it works well !
I have difficulties to know if the flight controler sorftware crashed, or if it is the telemeter that crashed? how to know? any test?
Thank you very much for your help