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I’ve just finished calibrating using marlin for MANUAL_Z_HOME_POS and eeprom’s 666 command for my end stops. Everything checked out, then I successfully printed a test square (yay!).

Then as I was measuring the square, I saw the display was garbled. I clicked the wheel, it returned to normal, and I moved on. Now every print begins at Z 0.29 instead of Z0.00.

What could have happened?

Things I’ve tried:

Recalibrating Z and end stops (they were still correct)

Compile & re-upload firmware

m501 and m502 the eeprom

I’m stumped & really appreciate your thoughts.

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