I took a video of the first test drive i made last week and it matches with your description. There is much more noise coming from the motor compared to the H300 controller i'm normally using.arber333 wrote: ↑Apr 06, 2018 2:11 pmHi
EMRAX is outrunner motor, so it has a lot of poles, 20 poles to be exact. This needs a high frequency to run at good RPM. Roman told me to use at least 800Hz to reach 5000rpm. At that rpm you would need to increase pwm freq to have better resolution. He suggested 16kHz or 18kHz and drivers have to cope. I think at low freq you will notice this as cogging or noise in motor if you dont use higher freq.
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n) immediate motor phase step: 48