Motor connector

[Antoine]

Hi,

This is the second time I break a motor on my crazyflie, and I'm starting to worry about damaging the PCB and components by soldering them. Has anyone found a solution to avoid that, like a tiny connector or screw terminal?

Thanks,

Antoine

Edit: found this thread: http://forum.bitcraze.se/viewtopic.php?f=11&t=339 which answer my question. I'm open if somebody have a better solution.

[tobias]

Is it because of a depressed bearing? That might be solvable like in this video. The new motors also have a better bearing design to avoid this.

I have tested to re-solder several times without the pads being damaged but that might require a good temperature controlled soldering iron. I set the soldering iron to ~380 deg C and put on some new solder (leaded with flux) on the tip before I heat up a pad. Heat it up from the top and pull out the wire from the bottom side. Do the same when inserting the new one. Hope it helps!

[Antoine]

The first time the motor was damaged after a crash (but without any external sign), it required a high level of thrust to start and the fly was not stable. The second time the motor was also damaged after a crash, but this time it was the bottom of the motor (black plastic part) which was damaged by the rotor (because of a collision of the propeller I guess). Picture:

This time, the motor appeared to work fine but the fly was not stable and the Crazyflie was drifting...

I ordered 5 motors from here. Is it the fixed one?

Thanks for your advice for the soldering, I'll try to follow them .

[tobias]

I ordered 5 motors from here. Is it the fixed one?

Yes that should be the new motor (part nr: BC-CM-01-B).