The video below shows how to test a stepper motor without using any multimeter , all you need is just a led.
CONCEPT: In any motor when electrical energy is converted into mechanical energy. So if we provide mechanical energy then output must me electrical energy.
Not only in case of just stepper motor but for a simple DC motor also this works fine.
Watch the video below to Know how to test a Stepper motor using a led in a simple way, without using any Multimeter
Thanks For Watching
RON
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I'm curious if somehow you could determine the phase of the motor coils with your LED method? I know testing a stepper motor with a battery you can figure out the coil phases by how the shaft moves.