Hi,
Recently my craft has suffered a crash and from the logs we determined it is a motor/ESC failure. We don't know which motor though.
I removed all motors and their ESCs and tested them on a bench setup. I found that 3 ESCs had a problem:
* One worked fine until I ramped up to 70% and then it started losing sync. It’s interesting that it did that because it was tested with exactly the same setup before I mounted it and then it was OK. Programming different timing parameters fixed this ESC. (see also my other thread in the forum "ESC32 with MAX_CURRENT set at 15A, but actual limit is more")
* One was hurt because of the crash: the pins were bent and they tore off some pads on the PCB
* The third one starts the motor fine when there is no propeller on it. If there is a propeller on it then it stops immediately (it hits the BAD_DETECTS_DISARM limit). This one was on the same arm as the 2nd one, so it is possible that it was also physically injured.
ESC#2 is clearly because of the crash.
I wonder about ESC#3 though: is it possible to determine what is wrong with it? And: can we determine if it is a failure that lead to the crash or is it a failure that was a consequence of the crash?
Thanks & kind regards,
Johan.