Hi everbody,
I rebuilt my quad with an APM 2.5 . It flies nicely in STABILIZE and ALT HOLD mode but when I switch to POS HOLD or LOITER it immediately rolls in one direction and starts flying away.
Searching the forums I tried to recalibrate the compass which didn't help at all.
Then I put the quad outside and simply logged the telemetry while it stayed on the ground.The GPS-log drifts along a ~45° axis from north-east to south-west and back wile the distances become greater. It seems to keep it's heading, just the position moves along the axis up to 22Km (13.5mi).
Does anybody have an idea if it could be another wrong setting/calibrating or if it's just my GPS?
Thanks very much!
Ben
This is how it looks like in mission planner:
And here is the log file:
Replies
Have you tried to repositioning the GPS somewhere else on the copter and then checking that the copter moves along another predictable path that sort of matches the respositioned gps. That is if does the copter always drift along an imagery vector away from the center that cuts thru the GPS and then if you place the GPS around the other side the drift follows round the back now ?
in my past experiences GPS problems are almost always EMI. I extended my tower and placed the gps up on top and that seems to have solved most of my problems. Keep the GPS away from motors, video transmitters, esc, wires carrying signals and batteries and you will have a good chance of a happy working GPS.