Hi all,
I know there's been lots of posts about these sorts of problems, and there is troubleshooting guidance on the arducopter website (which I have been through), but I have tried everything I've come across and still have had no luck!
The problem I have is that the quad pitches (and rolls slightly) on take off, causing it to flip over.
I've got the 3DR quad kit, with APM 2.6. I have assembled and double checked everything. The PDB wires are all definitely the right way round, as are all the rotors (pushers and pullers are on correct motors), and the motor spinning directions. The centre of gravity is not the issue as even shifting it to compensate still causes flipping by pitching.
It appears that the two front motors (1 and 3) must be spinning a bit faster, as it is the front that pitches up.
Interestingly, if I flip round the cable going from the motor PDB to the APM output (this is the 4 pin cable with a different colour wire for each motor), then the quad pitches up from the back (meaning that motors 2 and 4 must now be spinning faster. Therefore it must be somethig to do with the commands coming from the receiver/APM.
Has anyone got any thoughts? I have redone ESC, RC, and accelerometer calibration to rule those out.
Many thanks for any help you can give!
Replies
Hi F mCC,
I am having the same problem as you. Have you fixed the problem since you have posted this question and can you tell me how you went by doing it?
Thanks!
Are the motors spinning the right way with the right props on them?
Hi Gary,
Thanks for the reply. Yes, motors are spinning correct ways, and pusher and puller props are definitely on the right motors.