Pixhawk firmware 3.2.rc3 Hexacopter X

Posted by faria on July 25, 2014 at 2:40am

Hi there,

I have bought a tarot 680 pro (hexacopter), pixhawk and r70008 futaba receiver.

So the firmware compatible to my hardware is hexacopter X Arducopter 3.2.

After connecting all device, i calibrate the radio, compass, mag, esc, etc. Everything is ok. Test the motor and the rotation (ok).

However when i test without props in stabilize mode i have a problem. The values send to the escs are very unstable. Only change the throttle the values are very different (radio 1= 1120, radio 2= 1310). I believe the controller dont generate the motors values correctly. 

When i test with props i cant fly (only crash without damage).

Anyone have this problem? i have change the pid, calibration again, fix the controller, 

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

Join diydrones

Email me when people reply –
Follow

Replies

  • faria July 29, 2014 at 4:02am

    i have this problem

    https://www.youtube.com/watch?v=hMQvY_BeJ2Y

    is the same.

    The solution is Inflight-Calibration?

    • Doug Walmsley > faria July 30, 2014 at 5:41pm

      What happens when you lift off and give right or left input?  Is you radio configured correctly.  I say this as my Spektrum was configured to when I pushed stick forward it flew backwards, and when I gave left input it went to the right.  I corrected the problem by reversing radio controls.  Not sure this is what is going on with your UAV but it's worth checking.

  • faria July 28, 2014 at 1:19am

    ok. I tested the motor everything is ok. However when i change the PID the values is more stable. I believe is necessary new values for PID.

    However i tested the direction of the motor again.

    .

    Thanks a lot

  • HOH July 25, 2014 at 4:04am

    Did you calibrate the ESCs? If you didn't, you should do that first.

    • faria > HOH July 25, 2014 at 4:17am

      yes. The are corrected calibrated. The values generated by the controller are wrong. For example i test the hexcopter without props. I have armed the system and analyse the values in the main out. When i try to take off (only throttle) the rotation for each motor are different (i cant take off, crash) without wind and the platform are very stable. 

    • HOH > faria July 26, 2014 at 4:28am

      The values you see does not mean much, it could be your hexa was not level at that time, these number should change when you move the hexa since it tries to compensate to make it level. As per Frank said try to recheck  your APM board and motors direction.

    • Frank Hoenack > faria July 25, 2014 at 10:36am

      Check that the APM board is facing the right way and that the motors are plugged into the right outputs.  It can't hurt to do an gyro/accel. calibration to establish level, and don't get right and left confused.  Also, if you had a huge amount of vibration, that would present a challenge for the imu.  (That'll be 2 cents, please).

This reply was deleted.