I am running a coreception printer with an mks robin nano board and 2209 drivers installed in uart mode and I am using octoprint/octoklipper. The printer was working but I decided to upgrade klipper to the latest version because I had not updated in a while and flashed the firmware to the latest version as well but now I am getting tmc driver read errors, always on the z stepper. I tried swapping the uart cables, the driver itself, disabling stealthchop and sometimes the printer will home and start to print but will shutoff after the first few layers print and it starts to speed up, but now its shutting down when homing. The only change would be the update that changes where the drivers are read continually and klipper will shutdown if it gets an error. When I look at the klippy.log usually if you see stepper read errors it will show the read responses as blanks but the log looks like its communicating so I don’t know what the underlying error is.
klippy.log (121.9 KB)