GitHub: grbl
GitHub Wiki: Connecting Grbl
V0.8: D12 = Laser On V0.9: D11 = Laser On (PWM)
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Banggood
5500mW A3 30x40cm Desktop DIY Violet Laser Engraver Picture CNC Printer Assembling Kits
AliExpress
X-Benbox , 300*400mm , 5500MW big DIY laser engraving machine,5.5W diy marking machine,diy laser engrave machine,advanced toys
X-Benbox , 300*400mm , 5500MW big DIY laser engraving machine , 5.5W diy marking machine,diy laser engrave machine,advanced toys
Have You consider Opt Lasers blue laser heads?
Great quality and lifetime of diodes are high 😉
https://optlasersgrav.com/PLH3D-6W-Series