@kenny66 said in Stepper choices for Maestro.:
The extruder steppers (for various reasons) will stall because they don't have enough torque to push the filament. I was curious if running a stepper constantly at it's edge of torque before a stall could possibly harm the Maestro? No matter what speed you're extruding the motors get very warm. If you try and push the speed over 20mm/s (if it doesn't stall) the motors will get to hot to hold a finger on for more than a second or two and you start getting Phase Disconnected errors, which we know was (in that firmware version) a catchall error that in this case was indicating that the TMC driver was overheating and briefly shutting off to protect itself.
StealthChop does not work at high speeds. Symptoms of running too fast for stealthChop include skipped steps, reports of short-to-ground, reports of phase disconnected, and drivers getting hotter than they do at lower speeds. Use the V parameter of M569 to restrict the maximum speed at which stealthChop is used.
Motor noise with TMC2208/2224 drivers seems to be a problem when high inductance motors are used. The 1.33A motors in my Ormerod, which is powered from 12V, are quiet in spreadCycle mode.