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AboutMotor.md

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Understenging the Stepper Motor

In this file is described how the stepper motor work and how is made.

About the 28BYJ-48

  • The 28BYJ-48 is an unipolar stepper motor

To turn the internal rotor shaft is required a cycle of 8 steps, than due to the gear reduction of 64:1 (63.65...) the steps are bring to 2048 which are the steps to do an entire revolution of the external motor shaft.

Stepping mode

There are three mode to drive this stepper motor:

  • WAVE_DRIVE, this mode is rarely used and it have not any specific features. (2048 steps by revolution)
  • FULL_STEP , this mode is stronger than wave_drive because for the entire cycles, 2 coils are activated an so it has two times the power. (2048 steps by revolution)
  • HALF_STEP , this mode has half power of full_step mode beacause only for the half of the time, 2 coils are activated, but in this mode the steps by revolutions are doubled. (4096 steps by revolution)