Using Step Motor
Step motors allow controled rotation. They implement it using steps. To use it - you need controller.
My controller for step motor 28BYJ-48 has 4 input channels. To make one step - we must send 8 singals in sequence:
| Step | IN1 | IN2 | IN3 | IN4 | 
|---|---|---|---|---|
| 1 | 1 | 0 | 0 | 0 | 
| 2 | 1 | 1 | 0 | 0 | 
| 3 | 0 | 1 | 0 | 0 | 
| 4 | 0 | 1 | 1 | 0 | 
| 5 | 0 | 0 | 1 | 0 | 
| 6 | 0 | 0 | 1 | 1 | 
| 7 | 0 | 0 | 0 | 1 | 
| 8 | 1 | 0 | 0 | 1 | 
Projects
See Step Motor. It rotates step motor for some time, them makes delay for one second and repeat.