Another old weekend project, started out at control systems design class of NTUA, where I saw a robot like this, but more complicated with three DOFs. I was fascinated, so I said, I want to have one too! Or maybe even better, make one! So I spent all three days in a row to build it. Luckily, I already had an arduino board, therefore I had only to buy an L293D chip to control the motor. The rest of the parts are mostly junk. So, here it is.