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M914 - TMC Bump Sensitivity

control Set sensorless homing sensitivity HAVE_TMC2130 SENSORLESS_HOMING

Some TMC stepper drivers have the ability to detect when they bump into something that causes them to stop moving. This feature is so sensitive that it can actually take the place of traditional endstops. Set the bump sensitivity for the X and Y stepper drivers here.


M914 [X<int>] [Y<int>]

Argument Description

Sensitivity of the X stepper driver


Sensitivity of the Y stepper driver


Requires SENSORLESS_HOMING in Configuration_adv.h.

This feature is currently only compatible with the TMC2130.

It is advised to set both X_HOME_BUMP_MM and Y_HOME_BUMP_MM to 0.

Higher values = Lower sensitivity.