Discussions

APM tries to yaw, roll and pitch

Posted by a b on April 16, 2014 at 8:18am

Hi everyone,

I made an APM2.6 Hexacopter and I'm sure there are no calibration mistakes. The problem is, when I spin the motors, APM itself decreases some PWMs and increses some. This is mostly to yaw but sometimes it can pitch and roll too. When I decrease all the PIDs to 0, the motors all spin at the same RPM. 

What do you think? Compass issue?

Logs are attached,

Thanks

2014-04-14 22-52-50 78.log

2014-04-16 14-13-50 93.log

2014-04-16 14-23-21 94.log

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

Join diydrones

Email me when people reply –
Follow

Replies

  • a b April 16, 2014 at 9:26pm

    Update: Now the MP shows no yaw but the motors still act weirdly.

  • a b April 16, 2014 at 9:09pm

    3701710596?profile=original

  • Scott Pritchett April 16, 2014 at 1:55pm

    I've seen reports of others having this issue after doing a compass calibration with the .99 version of mission planner.  Try calibrating with an older MP version.

    • a b > Scott Pritchett April 16, 2014 at 1:57pm

      I will try this Scott, thanks.

  • a b April 16, 2014 at 1:38pm

    Update: I raised the compass about 20cm high, re-calibrated and carried out compassmot showing 4% interference. But the yaw degree on the mission planner increases constantly without a touch to the transmitter. Please reply...

This reply was deleted.

Activity