Greetings,
I'm trying to get the information from an AC 3 phase motor. The motor is used to roll windows up and down. I know that X turns correspond to Y cm and that the window has Z cm high.
I would like to know what kind of potentiometer can I use to know how many turns has the motor done.
I'm speaking about potentiometer because I've already seen once one motor using a potentiometer, but I don't know what kind of pot will it be.
The image of the potentiometer is here: http://web.ist.utl.pt/pedro.m.s.oliveira/20150218_112912.jpg
I don't need to use a Pot. If you know any other sensor I can use, for me it's ok.
Using a Pot, by now, i think I can only check one solution: the output shaft driving a gear so the complete closing of the windows will be less than the common pot will turn, so I won't damage the pot. And then, from the pot resistance, make the calculations.
But I think there will be an easier way.
Thank you very much,
Pedro Oliveira