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fan_tach_monitor.cfg modified - 07/15/2025 - 05:50:11 PM

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macocha 2025-07-15 17:50:14 +00:00
parent dc4afe4a96
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printer_data/config/macros/fan_tach_monitor.cfg
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# Monitoring loop. Begins at Klipper start.
[delayed_gcode CHECK_ALL_FANS]
initial_duration: 1
gcode:
HOTEND_FAN_CHECK
UPDATE_DELAYED_GCODE ID=CHECK_ALL_FANS DURATION=3
# Change min_rpm and max_consecutive_stops to your desired values.
[gcode_macro HOTEND_FAN_CHECK]
variable_he_stop_count: 0
gcode:
{% set min_rpm = 3000|float %}
{% set max_consecutive_stops = 3 %}
{% set rpm = printer['heater_fan hotend_fan'].rpm|float %}
{% set he_target = printer[printer.toolhead.extruder].target|float %}
{% set he_temp = printer[printer.toolhead.extruder].temperature|float %}
{% set fan_on_temp = printer.configfile.settings['heater_fan hotend_fan'].heater_temp|float %}
{% set he_stop_count = printer["gcode_macro HOTEND_FAN_CHECK"].he_stop_count|int %}
{% if (he_target >= fan_on_temp) and (rpm < min_rpm) and (he_temp >= fan_on_temp) %}
SET_GCODE_VARIABLE MACRO=HOTEND_FAN_CHECK VARIABLE=he_stop_count VALUE={he_stop_count + 1}
RESPOND PREFIX="HOTEND FAN CHECK:" MSG="Fan stoppage detected ({he_stop_count+1}/{max_consecutive_stops})."
M400
{% if printer["gcode_macro HOTEND_FAN_CHECK"].he_stop_count|int >= max_consecutive_stops-1 %}
FAN_STOPPAGE_ROUTINE
{% endif %}
{% else %}
SET_GCODE_VARIABLE MACRO=HOTEND_FAN_CHECK VARIABLE=he_stop_count VALUE=0
{% endif %}
# Insert the gcode that you want to run when a fan stoppage is detected.
# This runs every ~3 seconds until the stop conditions are cleared.
[gcode_macro FAN_STOPPAGE_ROUTINE]
gcode:
# If not already paused
{% if printer['pause_resume'].is_paused|int == 0 %}
M117 !!FAN STOPPAGE!!
M118 FAN STOPPAGE DETECTED. PAUSING...
PAUSE
# Turn off the hotend.
# !! Don't forget to turn your hotend back on before resume. !!
# -- If using this guide's pause/resume macros (in useful_macros.html), the hotend will automatically reheat on resume
# -- (as long as the hotend is not turned off BEFORE pause is called)
SET_HEATER_TEMPERATURE HEATER=extruder TARGET=0
{% endif %}