I know that many of you decide to change firmware on your DIY engraving machines.
What do you need to know if something went wrong and then you face a problem with your board?
1. Very simple – upload a new GRBL1.1 firmware.
2. Solder TTL wires to D11 Arduino pin + GND.
3. Run either GRBL or Engravermaster software.
Full and detailed guidance
Enjoy your laser engraving and laser cutting.