Arduino-based stepper motor control using Python This program can rotate a stepper motor by a given angle, or at a given speed (in degrees per second) for a given number of rotations. Maximum speed ...

Its a bit jumpy because your not suposed to control stepper motors with a atiny or ardunio usualy your going to use a stepper control chip like a AX1201728SG with the same libaray if you want that ...