I once built a few tiny 3D printers out of old CD ROM drives with my students. The motors are no larger than 15mm. I was able to use the finest micro-stepping that those drivers are capable of. We did nothing out of the ordinary to hook them up; the motor plugged directly in to the RAMPS board. I can’t recall what the step resolution was
How are you setting the current? I adjusted these by incrementally increasing the current while monitoring the motor temperature. > On Mar 18, 2021, at 3:52 PM, Frank Tkalcevic <fr...@franksworkshop.com.au> > wrote: > > I have some small 15mm steppers, similar to this. > > > > https://www.aliexpress.com/item/32872829855.html > > > > I am trying to drive them with an A4988 stepper driver. I can run them at > full step and half step, but anything smaller and they don't move linearly - > one phase appears to step correctly, but the other appears to stick, then > jump after a few steps. I've tried adjusting the current, but it didn't > make any difference. > > > > Is there anything special about driving these motors? > > > > Frank > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
