The steppers will always hum when the drivers are active. So a brake on the axis and disabling the stepper drivers is mandatory.
A worm gear can also act as a break, when the gear ratio is high enough. ( Think windscreen wiper motors )
With encoders you actually wouldn't need steppers but before mentioned wiper motors would do.
20 years ago I've built a similar device for testing light bulbs/reflectors *sigh*
-Olaf
A worm gear can also act as a break, when the gear ratio is high enough. ( Think windscreen wiper motors )
With encoders you actually wouldn't need steppers but before mentioned wiper motors would do.
20 years ago I've built a similar device for testing light bulbs/reflectors *sigh*
-Olaf