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