Dunothar Soren
RRCRat Rig Community [Unofficial]
•Created by Dunothar Soren on 3/27/2025 in #fix-my-printer
VC4 full kit: unable to read tmc uart 'stepper_z' register ifcnt
Finished building my VC4 500 hybrid today using the preconfigured kit. Flashing and all worked fine. Followed the entire commissioning guide to the point of homing the printer.
Get the unable to read tmc uart 'stepper_z' register ifcnt error every time while trying to home.
So far tried: Reseating /swapping drivers, checking VBUS, reflashing control board and the Pi, checking all jumpers and entire wiring.
Board: BTT Octopus V1.1 F447
Drivers: BTT TMC2209 V1.3
Any help would be greatly appreciayed. Can't wait to melt some plastic onto that gigantic bed!
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