Stepper motors moving but with minimal torque
jwilliam28 last edited by jwilliam28
I have a duet wifi running a syringe pump setup using two geared extruders. Today when setting up for a print I found that while the extruder steppers would respond to a direct command to extrude they weren't doing so during a print. Simultaneously I found that the extruders had very little torque when turning compared to previously. I also have intermittent warnings about poles a and b being disconnected for the driver I'm attempting to use to extrude.
Several people work with the printer so I checked the config. Motors we're set to reasonable current values. I'm running the most recent firmware. I checked connections and wires and swapped motors to no effect. I swapped the extruders on to the y axis stepper and they worked normally with sufficient torque.
I'm not quite sure what's going on or what to check next.
Also, send M906 without parameters, and check that the motor current is the value you expect. Similarly, send M913 without parameters and check that the current is set to 100%.
jwilliam28 last edited by
It seems the current settings weren't being saved. I redid the config and it's working now.