Hello everyone, i have a problem with my custom 3d printer. Whenever im turning the printer on, the motors on z axis do a micro movement on opposite sides resulting in calibration loss. This happens every time i turn off and on the 3d printer. Im using arduino mega with bigtreetech 1.6 plus ramp and tmc 2208 stepper motor drivers. Any way i can fix this? Thanks in advance.
No, your design has created the problem! ALL stepper motors will move to the closest full step position when first powered up. That is why each must find it's home or zero position with a limit switch of some type.
Your design seems to have a pair of steppers working where only one is needed with belts to power the actual movements.
Oh i see. I guess i have to make some modifications on the printer structure then. Thank you
Be sure to include an adjustable idler pulley to keep the belt tight!
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