Bl-mach-v1.1 D302 Jun 2026

: Dedicated relay output for controlling the spindle switch .

: Connect a USB cable from your computer to the board to provide 5V to the logic side. The PW(5V) LED should light up. Bl-mach-v1.1 D302

: Uses optical coupling (opto-isolation) for all input signals and the 0–10V analog spindle output to prevent electrical interference from damaging the PC. : Dedicated relay output for controlling the spindle switch