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Now, i’m sure that each one of you has some stepper motors laying around and wanted to test them at a given time but never had the time to build a driver or to buy one. I had the same problem until i decided that is the time to build that cnc machine that am [...]

this is a simple test for a driver for stepper motors it uses a l298 IC and runs great, i’ll post more details later.

and here is a unipolar motor controlled by the driver.

Also in this second video i use different sources for powering the circuit board and the power source for the motor.