RUMBA/A4988s w/24V result in motors working erratically
I am upgrading from a 12V power supply to a 24V power supply on my RUMBA system, and have a 24V E3D and heated bed. I use Repetier, and have tested the hot end and heated bed at 24V, no issues. I have...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
Okay, update on the troubleshooting for this problem. First, some info: 1) The motors and wiring on this printer (Mendel90 config) have worked with a Sanguinololu 12V system previously. 2) The motors...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
Next update.... The wiring was okay - I think. I adjusted the max acceleration and jerk values in the Marlin firmware downward, and now the motors seem to operate normally - in one direction. They...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
The one-way behavior was due to some error (not yet determined) with the endstops. Taking the endstops off the board, the motion behavior is normal. So, looks like the main culprit was setting...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
Hey, Thanks for posting your updates. So, which driver would you recommend for RUMBA ? I only have the A4988 from my old ramps board and I would prefer to reuse them. I think i would need a new hot...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
Quotertrahms Before I checked this, I did check current limiting Vref on the A4988s, and they all read 0.8v - which (x2.5) equates to a 2A current limit on each. Seems okay, but let me know if you...
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
how to set the stepper current ? should that be done on firmware or on the board with the stepper screws ?
View ArticleRe: RUMBA/A4988s w/24V result in motors working erratically
Like all current boards with plug-in drivers, RUMBA doesn't support software-settable stepper motor current, so you have to adjust the pots on the driver boards.
View Article
