I've built a speed controller for DC motors (with a full bridge (2N MOSFETS and 2P MOSFETS) for 540 motor size) but I have serious troubles with that!
I have a lot of disturbances! I'm not really sure, if they are coming from the receiver (HF disturbances from the motor) or it's some kind of "back current" from the motor!
Also it's not really possible to control the motor with high resolution! I have 512 steps, but the motor doesn't behave like this! It's not really possible to control it sensibly!
So my questions:
*) any ideas?
*) how can i shrink/avoid disturbances?