Stepper motors noise when enabled without moving.

My z front left is making a weird noise once enabled. It's the only one that makes this noise. Other motors are quiete when not moving... is it normal ?
10 Replies
afraid-scarlet
afraid-scarlet2y ago
Some noise while holding is normal if not in stealthchop mode
shifubrams
shifubramsOP2y ago
thank you. i was worried
ptegler
ptegler2y ago
....some say don't..but I set each steppers stealthchop to 1. It cuts down on that tiny high pitch whine you can here while idle ymmv
shifubrams
shifubramsOP2y ago
Stealthchop is not enabled on mine
ptegler
ptegler2y ago
that's fine... adding stealthchop=1 will quiet them at idle
shifubrams
shifubramsOP2y ago
i'll try that
ptegler
ptegler2y ago
setting it to 1, as soon as they move at all, your right back in normal (and desired) spreadcycle mode.
shifubrams
shifubramsOP2y ago
but in the klipper documentation they say it can lead to issues changing that ... if it s not an issue i can live with the noise
ptegler
ptegler2y ago
it's 'an issue' WHILE MOVING as it can skip microsteps. But not an issue NOT moving. As soon as you move you are right back in spreadscycle. Klipper or no Klipper, this is universal across almost every stepper driver system. My massive CNC router table running 6A 48V 942 oz/in NEMA 42 steppers are configured this way. Without it you can SEE the stepper motor hum in the metal frame work at an idle.
shifubrams
shifubramsOP2y ago
so i just specify stealthchop_threshold: 1 seems like it is already in the default config lol i changed to performance settings and set the stealthchop_threshold: 1 and it's nicely quiet on idle thanks

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