M3 Spins up when battery is inserted.

[rjames93]

Apply battery to crazyflie, M3 spins up to maximum, the rest don't spin up. Turn on then I see the correct behaviour for the 3 working motors but not M3 which slows down. Any ideas?




I apologise for the poor quality and the huge image size. I cannot see any visible shorts or anything where it shouldn't be.

Advice?

Cheers

[doddz]

Does M3 stop at all or continue running constantly (maybe at different speeds)?

Sent from my HTC One using Tapatalk

[rjames93]

Does M3 stop at all or continue running constantly (maybe at different speeds)?

Sent from my HTC One using Tapatalk

Okay. If I hit the on/off switch the 3 other motors turn on and do their small movement. After that m3 is moving slightly slower than before ( probably because the rest of the board is now running). If I have the flie plugged in via USB and add the battery, it will continue to spin even after the battery is removed although at a much lower speed.

Sent from my Nexus 4 using Tapatalk

[tobias]

It sounds like the M3 mosfet is partly broken. Something Seeedstudio should have found in the manufacturing test. Sorry about that. You have the option to contact Seeedstudio support and let them handle it or try to replace the mosfet your self.

[rjames93]

I imagine that replacing the fet is going to be tricky. I'll contact seeedstudio

Sent from my Nexus 4 using Tapatalk

[rjames93]

Anyone have experience with replacing the fets. And or dealing with seeedstudio from the united kingdom

Sent from my Nexus 4 using Tapatalk

[tobias]

Some tips here.

[rjames93]

Still no response from seeedstudio

Sent from my Nexus 4 using Tapatalk

[tobias]

That is bad, from what I heard they are pretty good at handling support issues. Now they are on Holiday due to Chinese spring festival which would delay it even further...