2026-10-18 22:39:26 +02:00
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# Nozzle collision guard: bd_pressure watches the nozzle force during moves
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# that must not touch anything (needs extras/bdp_guard.py and the bd_pressure
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# load-check firmware). See extras/bdp_guard.py.
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#
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2026-10-18 23:25:28 +02:00
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# mode: stop shuts Klipper down on a touch; log only measures and reports
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# each phase (console and klippy.log, "bdp_guard:"). A phase can override it
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# with _GUARD_ON MODE=log (the brush does).
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# Measured 2026-10-18: peaks 1-8 in all phases except the brush (47); a
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# light finger push on the cold nozzle gives 41.
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2026-10-18 22:39:26 +02:00
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[bdp_guard]
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sensor: bd_pa
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2026-10-18 23:25:28 +02:00
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mode: stop
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2026-10-18 22:39:26 +02:00
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threshold: 30
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samples: 3
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interval: 0.02
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# M400 first: BDP_GUARD_ARM/DISARM act at once, not in the move queue, so
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# without it the guard would watch moves that are still queued (contact
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# homing, extrusion) or stop watching before the armed moves ran.
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[gcode_macro _GUARD_ON]
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description: Arm the nozzle guard for PHASE=<name> [MODE=log|stop] after the queued moves (nothing without [bdp_guard])
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gcode:
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{% if 'bdp_guard' in printer %}
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M400
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BDP_GUARD_ARM PHASE={params.PHASE|default('armed')} {('MODE=' ~ params.MODE) if 'MODE' in params else ''}
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{% endif %}
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[gcode_macro _GUARD_OFF]
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description: Disarm the nozzle guard after the queued moves (nothing without [bdp_guard])
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gcode:
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{% if 'bdp_guard' in printer %}
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M400
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BDP_GUARD_DISARM
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{% endif %}
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