What is an endstop in a 3D printer?
An endstop is a limit switch marking the zero position of an axis (X=0, Y=0, Z=0). During homing (G28) the printer moves to the endstop and sets origin.
Endstop types
- Mechanical microswitch
- Optical - non-contact
- Magnetic (Hall sensor)
- Sensorless (TMC StallGuard)
Z-endstop vs. ABL
Z-endstop sets just one point. ABL measures multiple points.
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