I just got an old Ender 3 for cheap and wanted to replace the crappy extruder with a nicer bowden extruder of my (now) direct drive Kobra Max. When I connect the new stepper, nothing moves. It’s a longer stepper and a different manufacturer. Is the wiring different or VREF wrong or are there other reasons why it wouldn’t move? The driver is good, since the old stepper is still working.
Thanks for any help!
Steppers require a certain amount of voltage to maintain position, too little and it looses position/starts shifting, too much and it overheats and stutters.
Generally, steppers will only draw what they need, and not more. 3d printers usually have current limiting switched if something goes weird.