Running RAMPS 1.4 on a DIY engraving machine. Using a Marlin firmware. - YouTube
Running the laser with RAMPS 1.4 board - YouTube
Marlin firmware as laser cutter
Ramps 1.4 Ramps 1.5 Ramps 1.6 Expansion Control Panel Part Motherboard 3d Printer Parts Shield Red Black Controls - 3d Printer Parts & Accessories - AliExpress
Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers