Arducopter 3DR-B 880kv motor setup - one motor will not spin
Hi there, my Arducopter/APM2 build has been coming along nicely and I think I am almost at the finish line. I am working on configuring my ESCs and am having a problem with one of my motors. I was able to configure my ESCs using automatic (I think) and when I plug in the LiPo all the ESCs beep rapidly for a while and then eventually, one by one, stop beeping and am able to arm the motors and make the rotors turn. If I arm while one ESC is still beeping that motor will not work, that was expected for me.
However, my issue is that even when all ESCs are silent and I have armed the motors (red light solid), I throttle up and all the motors move except for when. It makes the very anemic attempt at spinning and spins back and worth very little (maybe about 60 or 80 degrees in each direction) until what I assume is the ESC cutoff kicks in and it stops moving all together. All of this is happening while the other 3 motors are spinning fine and responding to throttle. When I stop the motors the one that isn't working is hot to the touch, much warmer than the other 3 motors that were actually spinning.
I know it isn't the binding issue with the 880kv's because I have widened my holes significantly before I ever even ran the motors.
Could it be that the motor is toasted? How could that have happened? Will configuring the ESCs individually help me? I can provide more info, or video of the partial spinning if need be. Somebody please help me, I'M SO CLOSE!!
Replies to This Discussion
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Permalink Reply by Vernon Barry on -
No, not if you are using stock 3DR ESCs, that's what I fly. I will say this, follow my other post if you have a usbtiny or other AVR programmer and flash the ESCs with SimonK.
Point is, you have a basically "kit" setup of parts known to work together. The only answer is that the calibration is so jacked up the ESCs cannot sense what the APM is outputing, or, the APM is jacked up, or you still have a wiring problem. Being that you say the mtor test works, then that assumes wiring works, so honestly I don't know what you are doing wrong.
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Permalink Reply by Calum Barnes on
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You were right, it was a calibration issue. I basically fixed it by calibrating my radio over and over again with different throttle trim until something worked. It finally worked with the trim all the way down but then I couldn't arm the ESCs. I tried two above that and it seemed to work and allow me to arm. But it is now working and I have attached the rotors! Just flew it through its first battery and had a blast! It was tilting a bit once I got it off the ground but I think my accelerometer just needs to be calibrated, at least it is working. Thank you SO much for your help Vernon, definitely couldn't have finished this without your help.
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Permalink Reply by Arunabha Bhattacharya on
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I'm having a similar issue. I setup my JDrones Arducopter in plus config with the APM2 board. Levelled it and started up in stabilize mode. I ran it through two batteries in stabilize mode. It was flying perfectly well, just ouling a bit to the left.Yesterday, I landed it after a flight, and when I tried powering up for takeoff, the left motor, ie, motor no 2, wouldn't spin up. The motor's working fine, I cross checked it with the other ESCs one by one. All the ESCs are fine, except that one. Do I have to replace my ESC now? Or can it be fixed?
What could be a plausible explanation for this sudden malfunction? There was no noise, nothing. I just landed, powered down, and when I tried taking off, it stopped working?
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