Laserkritzel: "Writing" with blue laser on luminescent foil:
Hardware consists of two 28BYJ-48 stepper motors, mounted together
for xy-axes,
ULN2003A driver boards, a blue laser, and a teensy-board.
Software is mini_cnc_plotter_firmware
running on the teensy, which is connected to a RasPi, that
sends data to it using f-engrave
se.
Would be nice to have all the code in the µC...