If you want a simple and easy introduction to stepper motors ... Next he demonstrates stepping the motor manually and then makes a simple FET driver circuit. Just when you’re expecting a ...

to resistance (R), which describes the rate of change of current in L/R circuit motors. Motor coil impedance vs. step rate is also determined by these parameters. L/R drive circuits can be configured ...

There are a lot of fun projects you can do with stepper motors salvaged from old ... If you read an open circuit, you are on two different coils. If you read a resistance, you can record it ...