Afternoon all. I've been doing some refurb on my Ultimaker 2, new bearings, belts, hotend etc. When I have come to use it again, it is coming up with the ER05 and ER06 errors about the Z axis. I've done some digging, and noticed on the main board, the little stepper driver chip associated with the Z axis stepper motor, has got a chunk missing from it. Presumably this is why the Z axis limit is considered to be stuck/broken, as the Z axis cannot move.
I have tested the Z axis motor using a standalone driver, and the motor is working perfectly. The motor coil resistance is in spec, and also the limit switch is actually working correctly (using TP80 to check for 5V/0V when switch is used).
I have a V2.1.1. mainboard, and it has the hardware for the second extruder. I was wondering if anyone has any compiled a custom firmware, that allows the use of the E2 driver to power the Z axis motor? From what I can tell from the schematics, the only issue I can see, is that the Stepper driver Vref for the second extruder, is shared with the primary extruder, and therefore the Z axis current limit will need to be the same as the Extruder?
Thanks
Andy