Seeking Help with Z-Axis Movement during Separate Homing of X and Y
January 11, 2024 02:20PM
Ran into a bit of a snag while homing X and Y axes separately in Marlin firmware. Each time I home X or Y individually, the Z-axis decides to take a 5mm stroll in the positive direction.

Any chance you could guide me on putting a stop to this Z-axis movement during separate homing of X and Y? I've delved into the settings, but the solution hasn't quite revealed itself.

Appreciate any insight you can share to help me tackle this puzzle.
Re: Seeking Help with Z-Axis Movement during Separate Homing of X and Y
January 11, 2024 11:16PM
This is a safety feature. Look in Configuration.h for:

#define Z_HOMING_HEIGHT 5 // (mm) Minimal Z height before homing (G28) for Z clearance above the bed, clamps, ...
// Be sure to have this much clearance over your Z_MAX_POS to prevent grinding.
Re: Seeking Help with Z-Axis Movement during Separate Homing of X and Y
January 12, 2024 05:51AM
It's very strange. The #define Z_HOMING_HEIGHT is not present in configuration.h.
Re: Seeking Help with Z-Axis Movement during Separate Homing of X and Y
January 12, 2024 05:54AM
was renamed in newer code

#error "Z_HOMING_HEIGHT is now Z_CLEARANCE_FOR_HOMING."
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