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tool_probe.md

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Tool probe

A per-tool Z endstop and crash detection support. Allows using any tool to home Z.

Configuration

[stepper_z]
endstop_pin: probe:z_virtual_endstop

[tool_probe_endstop]
crash_mintime: 0.5 # seconds to wait before announcing a crash, if the probe stops 
  #triggering before this, no crash is reported. 
crash_gcode:
    RESPOND TYPE=error MSG='Tool not detected, expected {printer.toolchanger.tool_number}. Pausing the print.' 
    M84
    TURN_OFF_HEATERS

[tool_probe T1]
pin: !et1:PB6
tool: 1
z_offset:  -0.75
speed: 5.0
samples: 3
samples_result: median
sample_retract_dist: 2.0
samples_tolerance: 0.02
samples_tolerance_retries: 3

Status

tool_probe_endstop

Implements the regular Probe params and the following:

  • active_tool_probe - name of the active tool_probe
  • active_tool_number - number of the active tool as detected by the probe
  • active_tool_probe_z_offset - z-offset of the active tool probe

Gcodes

Implements the regular Probe commands and the following.

SET_ACTIVE_TOOL_PROBE

SET_ACTIVE_TOOL_PROBE T=<tool_nr>: Manually set the active probe

DETECT_ACTIVE_TOOL_PROBE

DETECT_ACTIVE_TOOL_PROBE: Detects the active probe based on the one that is not triggered.

START_TOOL_PROBE_CRASH_DETECTION

START_TOOL_PROBE_CRASH_DETECTION [T=<tool_nr>]: Start detecting tool crashes. When the tool probe triggers the tool_probe_endstop.crash_gcode is run.

STOP_TOOL_PROBE_CRASH_DETECTION

STOP_TOOL_PROBE_CRASH_DETECTION: Stops the crash detection.