Reference
The article provides an extensive reference on stepper motors, particularly focusing on the DRV8825 driver, communication protocols, API descriptions, MakeCode modules, and supplementary resources including datasheets and schematics.
Principle
Stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.
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