I’m looking into making a MPCNC laser engraver on a budget and am a bit confused on my options for a laser. There seems to be two options, either with or without a TTL driver.
I’ve heard you can get one without a TTL driver and plug it right into your fan port, from http://nathan.vertile.com/blog/2017/12/01/mostly-printed-cnc/
Or with a TTL driver remapped to a 5V port on the board, as explained in the tutorial on this site https://www.v1engineering.com/wp-content/uploads/2016/01/MPCNC-laser-add-on-walk-through-Rev2.0.pdf
So is the TTL driver necessary? It seems lots easier to not have to mess with it. And if it’s not necessary, what’s the benefit of using it?