and a few magnets
The motors both rotate at 1000 rpm with no load going (mA value 200 mA) from 1000 to 2000 rpm takes relatively not that much extra PWM.But what if both rotate at 1000 rpm with a load going (mA value 1000 mA) from 1000 to 2000 rpm takes more PWM (If the max RPM can actually be reached!).So I thougt: what if I know the actual RPM and current value? Maybe I can optimize the PID algorithm with the extra data?Maybe I first have to do some testing to see what really happens...... Cheers.
At the moment I have two magenets/wheel. I can increase this to four? It will give a more accurate reading at low RPM, but I don't know if the interrupt can handle (12.000 pulses/minute max.)?