Laser Galvo - Nema17/14

thingiverse

I was looking for a Galvo for my new laser project. This 2D Galvo can be used for engraving, cutting, mosquito killers, low-speed laser projectors, or whatever you need to create. Mirrors: Instead of buying proper mirrors, I made use of an old hard drive and cut them out with a Dremel tool. Before cutting, it's recommended to add some printing tape to avoid scratches on the mirror surface. When using cyanoacrylate to paste the mirrors, put some additional printing tape on the mirror side to prevent crystallization from occurring. I had cut the motor shaft, but I would recommend adding washers to place the mirrors at the correct distance instead. This will ensure smooth movement and precise alignment. It's essential to notice that the mirror pieces are not symmetrical because the mirror surface must be aligned with the rotation axis for optimal performance. Drivers: I've tried using Pololu A4988 stepper drivers but found them a bit jerky, making it difficult to create straight lines. By switching to drv8825 stepper drivers, I was able to reduce vibrations and achieve smoother moves. Galvo - Cutting Example: https://www.youtube.com/watch?v=aM9LUbYJNW4&feature=youtu.be In this example, cutting is performed at 17 mm/s using a 3W laser. Galvo - Distance Ratio: https://www.youtube.com/watch?v=bdVrkIBskMs Each side of the shape corresponds to a 100x100 steps of a 1/32 NEMA17 microstepping ratio.