Discussions

Posted by jjohow on March 11, 2013 at 5:42am

Hi!

Sorry... this is getting strange, I know.

But after I just calibrated my TX with the APM 2.5 the motors started spinning at low RPM.

I disconnected the the power source (5 V BEC) and than the battery.

Now when I connect the battery, this is happening:

Thanks for your help!

Joerg

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beeping, motors, after, calibration

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Bill March 14, 2013 at 7:37pm

This apparently happens when ESC's don't think the throttle is "off". I had one motor beeping on my hexacopter; it turns out that the ESC's are not "calibrated" the same (and vary by temperature; only crystal controlled ESC's don't), and as pointed out in the manual calibration steps, I had to give my throttle control about 6 "down clicks" of trim. This lowered the throttle value enough so that the ESC's finally thought that the throttle was "off".

I was able to manually calibrate the ESC, and auto-calibrate of all 6 worked fine after that.

->Bill
Jason Tinacci March 11, 2013 at 9:18pm

Joerg,

I had a similar problem and I second what Richard said. You may want to follow the instructions for calibrating the ESCs one at a time. That was the only thing that worked for me.

Jason
T3

Richard Boyhan March 11, 2013 at 12:24pm

Try calibrating your ESCs. Your motors should never spin unless you are running a motor test from the CLI, which spins 1 motor at a time slowly or only after arming and then they should all spin with the throttle input.