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weird homing when toolhead is in the corner (voron 2.4r2 with 350 mm build)


New member
Printer Model
Voron 2.4r2
I turned the printer off while the toolhead was in the back left corner. Then I homed the toolhead and the only thing I can hear is weird motor noise (because the toolhead is in the corner) and the toolhead won’t move into the middle position. Just see the video: https://streamable.com/7rxgad

homing is good when i tunr the printer off, move the toolhead in the middle position of the printer, turn it on and run g28. This issue only happens while the toolhead is in a corner.

printer.cfg: https://pastebin.com/AXtTSaeh
Looks like you are using sensorless homing. If X or Y is left effectively at the limit of motion, then when it comes time to home, the stepper driver can't move the axis at all, and as a result won't have any way to detect "this is normal motion" vs "this is the limit of motion"
If the toolhead got placed in the corner as a result of a print, then I'd suggest adding a move to your PRINT_END macro. I'd also recommend checking out jontek2's better print start macro, found here: https://github.com/jontek2/A-better-print_start-macro, which has just such a move in the PRINT_END macro.
If the toolhead got placed in the corner for some other reason, I'm afraid I can't be of much help.