see the current BOM and a rendering of some openSCAD drawings
laser etcher
thinking that this looks good for microstepping pretty fast:
Allegro MicroSystems - A4989: Dual Full-Bridge MOSFET Driver with Microstepping Translator
I need to find a 405 or 445nm laser that's 1-3 watts (higher is better so I can undercurrent and extend lifespan I think)
I'll need help with the optics too, I know I need a beam expander but I'm not sure where to start as far as lenses and powers, etc...