F fabbie New Member Nov 18, 2004 #1 Hey i was wondering if i could do this. using the back-emf of a motor to measure the rpm. Is this possible? Or are there other methods to do this?
Hey i was wondering if i could do this. using the back-emf of a motor to measure the rpm. Is this possible? Or are there other methods to do this?
B bmcculla New Member Nov 18, 2004 #2 It's possible but a bit complicated. It's much easier to use another small motor as a generator.
B bmcculla New Member Nov 18, 2004 #4 You can use a LED and a Photo diode to make an opto-interrupter. You can also buy them in one package designed for this purpose.
You can use a LED and a Photo diode to make an opto-interrupter. You can also buy them in one package designed for this purpose.