I’ve recently been playing around with the Raspberry Pi and after spending a little time lighting up LED’s and setting up thermistors and voltage monitoring circuits I decided to try and tackle a CNC
A few years ago I built Mathias Wandell’s box joint jig. The great part about his design is it is almost ready to just mount the stepper motor and start cutting. I am sure there will be some mods necessary to fit every thing together, but that is all part of the fun. If you haven’t seen it you should go check it out
, he has plans available for those that want to purchase and build one like it.
I started this endeavor using a small salvaged stepper motor from a printer to figure out and write most of the python code I am using for the CNC machine. I ended up tearing apart two laser printers I found at a Habitat for Humanity store for the affordable price of 5 bucks a piece. I ended up with a nice collection of stuff to play around with in the future, but for this project the main part I used was the power supply. It is a switching supply that provides multiple voltages…of course I am only using the 24v output.