Hello! How are you?
The other day I read this:
"There are three terminals inside most small DC motors, and it acts a lot like three-phase alternating current [...]. A nice side effect of this is that the position of the motor can be detected by taking one of the phases straight into the microprocessor [RA4 in a PIC16C84]."
I would like to know how is it possible. How is the signal on the phases? Is it a square wave?
Thank you!