On this sample I would like to explain why PID-control should be used for speed controls and how the direction can be inverted.

Robot wirth stepper motor via microstepping, digital motion processing, auto tuning, cascaded PID controller and now with Joy Stick Control.

This project shows you how to successfully control a robot arm using the L9110 motor board, without using up all your Arduino outputs.

A humanoid arm + hand prototype made of balsa wood

A simple rover for line following made exploiting the ARTe Arduino REal-Time eXtension.

Make an R2-D2 replica and control it by an app you programmed. Add a Nokia interface which gives you the Star Wars characters info.