Stepper-Motor control with Arduino Uno on Lego© Technics

Hello,

To be able to slowly traveling while timelapse-ing, I made this small setup with a stepper motor, an Arduino, a small proto-board with 3 micro switches.
I can control the speed and the direction.

The arduino code is here :

http://pastebin.com/gAyBDKyr

i use 4 digital pins in OUTPUT MODE and 3 in INPUT. (pull down resistors !)

Видео Stepper-Motor control with Arduino Uno on Lego© Technics канала brucemangy