M542 driver - motor vibration at low speeds

[routercnc]

Hi Birchy,

Not tried it myself as don't have the noise problem you are experiencing but others have tried adding inertia to the stepper via flywheels etc. and achieved a much smoother low speed running. If you have a shaft from the rear of the stepper you can add one there, or otherwise bolt it to the front face of the pulley (tap holes in pulley face).

Solving Stepper Motor Resonance Problem on CNC Lathe - YouTube

I would suggest adding the lowest inertia possible to just remove the problem, otherwise acceleration of the stepper will suffer too much. The one in the video looks a bit big - you could do some calcs, or just try something to at least see if that would help before refining the flywheel design iteratively.