This is my scratch build Laser CNC Engraver and PCB Exposer. It uses a 150mW 405nm laser diode and two CD drive motors and mechanics. A Processing sketch calculates the position of the pixels and send them to an Arduino Mega, wich drives the steppermotors. A TTL driver is used to control the Laser. With the joystick you can control the laser. You can set the exposure time, so you can engrave foam, paper, leather, plastic and wood. If you engrave photo-coated PCBs its possible to harden the surface and create your custom made PCBs.
The resolution is about 100 pixels/cm. The work area is 3,2 x 3,2 cm.
Hackaday.com wrote about this project:
If you like this, you might like my 2D laser depth scanner with an ADNS3080 and Arduino Leonardo too: https://www.youtube.com/watch?v=uZoETsntwv8
You like my projects and would like to support me? Buy me as many coffees as you would’ve needed 😉
http://bit.ly/1JxdJZ9
All codes and circuit layouts are on GitHub:
https://github.com/Neumi/Arduino-Processing-Laser-CNC
The circuit is pretty straight forward… if you know how to get a stepper motor stepping and a led blinking, you should get this project running.
The music is by Four Tet – She Just Likes To Fight
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