To controller this CNC machine we need a microcontroller board called arduino Nano and we need motor driver IC for each stepper motor that is L293D IC. All the electronics components are solder on ...

Arduino Powered DIY CNC Painting Machine 12:36 pm June 15, 2016 By Julian Horsey ...

Powered by an Arduino Mega 2560 outfitted with a CNC shield, a pair of stepper motors drive pulleys with toothed belts to move Fumik to various positions along the wall.

It uses two motors guided by an Arduino UNO to move a pulley system which guides the pen pressed again a canvas. The results, which you can see in a time lapse video here, take between 12 and 24 ...

Be it a CNC, 3D printer, or a four cable drawing machine, any stepper motor based system has to have a home position. Stepper motors are open loop systems.