Hacked Gadgets Forum

December 25, 2006


at 5:16 am. Filed under Complex Hacks, Computer Hacks, Electronic Hacks

If you have an Etch a Sketch in the closet collecting dust, the Etch CNC may be an interesting project that could put it back into use.

“I am using a retrofit machine that fit within my budget. It’s a 2-axis machine with approximately 170x130mm travel.

The circuit board is my own design, using a ULN2803 per motor to supply approx. 0.3 amps per winding. The power supply is a standard AT hard-drive power connector, with the +12V used to power the motors. It’s a simple constant-voltage L/R drive. I made the circuit board using EAGLE, and milled it on Chris’s real CNC milling machine (which is powered by EMC and AXIS, of course). “