Originally Posted by flashervn
A friend of mine confirmed that the RCTimer 40A I am having are using internal crystal ( not sure its the same with the "internal oscillator" you are talking about). I tested again today and just like you ve described it, the jerky motor at 10% throttle only happened the first time. As the ESC heat up, its gone. So I think I am experiencing the "internal oscillator drift" you were talking about. Is there anyway to fix this and does this mean I should not use this ESC with your firmware as it wont work? Thank you.
Could you post a video of the problem? It probably has nothing to do with the oscillator unless it's just jerky because you're right on the edge of on/off at 10%. If 9% stops it and 11% is fine, then that's all it is; otherwise, it probably has to do with the FET switch timing, which newer code might improve, but that would be strange.