flexi-bot/docs/marlin/_gcode/M914.md

tag	title	brief	author	contrib	requires	group	codes	notes	parameters	Value Ranges	examples
m0914	TMC Bump Sensitivity	Set sensorless homing sensitivity	thinkyhead,mbuc	saikek, shitcreek	SENSORLESS_HOMING	trinamic	M914	Set all `*_HOME_BUMP_MM` values to 0 for best results. Set the default stall thresholds with `*_STALL_SENSITIVITY`. Compatible with TMC2130 and TMC2209. |Sensitivity|TMC2209|Others| |--|--|--| |LOWEST|0|+63| |HIGHEST|255|-64| High sensitivity may produce false positives. Low sensitivity may fail to trigger.	tag optional since description values I true 1.1.9 Index for multiple steppers. (i.e., `I1` for X2, Y2, Z2; `I2` for Z3; `I3` for Z4). unit type index int tag optional description values X true Sensitivity of the X stepper driver. type int tag optional description values Y true Sensitivity of the Y stepper driver. type int tag optional description values Z true Sensitivity of the Z stepper driver. type int	TMC2208 from 0..255 TCM2130 from -64..+63

Some TMC stepper drivers can 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. Use this command to set the bump sensitivity for the X, Y, and Z stepper drivers.