: In your CNC software (e.g., Mach3), map the pins according to the labels printed on the board. MACH3 BL-MACH-V1.1
on port P1. This allows you to control the actual RPM of your spindle directly from your G-code, rather than just turning it on and off. 🏁 Final Thoughts Bl-mach-v1.1 D302