Hi there! Just finished building my first CNC, a Rat Rig Killerbee 1510. At the final stage of the build I wanted to fire up my AMB 1400 and noticed it's not running at full speed. This is the setup: I wired the white and green directly to the Black Box on the 'Toolhead'. White on the GND and green on the 0-10V. The brown cable is wired directly to the 24V power supply. In the software the min RPM is set to 3.500 and max RPM to 25.000. Who can help me out?
Not yet, I lent my multimeter to a friend. I'll get it back tomorrow if all goes well. I did play with the fine tuning but nothing resulted in a different spindle speed..
Reread the Grbl Wiki too. Min RPM changes your scale. Is 0v=off or is 0v=3500rpm. You are telling Grbl to assume the latter. Also make sure to send the correct S values with M3 M3S25000 for example (should output 10v after calibration) = 100%
