Bed fans, single MGN9H carriage, 15x15 drag chain end updates (#416)
* Bed fans initial commit * Fix readme formatting * Fix formatting * fix formatting * fix formatting * fix stl orientation * initial commit for single mgn9 carriage * modify readme * reorganize * reorganize * update readme * update readme * update readme * update readme * update readme * update readme * update readme * max_power warning * update readme * update readme * update readme * rename MGN9 to MGN9H * reorganize * rename * fix image * remove cycle_time * increase M3 tolerance * add photo * add image * add to mod table * add photo * add photo * Bed fans initial commit * Fix readme formatting * Fix formatting * fix formatting * fix formatting * fix stl orientation * initial commit for single mgn9 carriage * modify readme * reorganize * reorganize * update readme * update readme * update readme * update readme * update readme * update readme * update readme * max_power warning * update readme * update readme * update readme * rename MGN9 to MGN9H * reorganize * rename * fix image * remove cycle_time * increase M3 tolerance * add photo * add image * add to mod table * add photo * add photo * fix bug causing bed fans to not turn off with bed * set thresholds to integer values * Support TURN_OFF_HEATERS * Modify comments * Modify fast speed * Update readme * Update README.md * Update readme * update readme * update readme * update readme * update readme * update readme / photos * add photo * formatting * Update short Z joints CAD to remove the rest of v2.4 assembly * Reorder readme * update readme
This commit is contained in:
AndrewEllis93
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############### Config options ##################
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[gcode_macro bedfanvars]
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variable_threshold: 100 # If bed temp target is above this threshold, fans will be enabled. If temp is set to below this threshold, fans will be disabled.
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variable_innerfast: 0.5 # Fan speed once bed temp is reached
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variable_outerfast: 0.6
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variable_innerslow: 0.2 # Fan speed while bed is heating
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variable_outerslow: 0.2
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gcode:
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########## Bed Fans #########
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[fan_generic BedInner]
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pin: # Change me
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#cycle_time: 0.05
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kick_start_time: 0.5
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[fan_generic BedOuter]
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pin: # Change me
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#cycle_time: 0.05
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kick_start_time: 0.5
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########## Aliases #########
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[gcode_macro BedFansSlow]
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gcode:
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# Vars
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{% set INNERSLOW = printer["gcode_macro bedfanvars"].innerslow|float %}
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{% set OUTERSLOW = printer["gcode_macro bedfanvars"].outerslow|float %}
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SET_FAN_SPEED FAN=BedInner SPEED={INNERSLOW}
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SET_FAN_SPEED FAN=BedOuter SPEED={OUTERSLOW}
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[gcode_macro BedFansFast]
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gcode:
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# Vars
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{% set INNERFAST = printer["gcode_macro bedfanvars"].innerfast|float %}
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{% set OUTERFAST = printer["gcode_macro bedfanvars"].outerfast|float %}
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SET_FAN_SPEED FAN=BedInner SPEED={INNERFAST}
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SET_FAN_SPEED FAN=BedOuter SPEED={OUTERFAST}
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[gcode_macro BedFansOff]
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gcode:
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SET_FAN_SPEED FAN=BedInner SPEED=0
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SET_FAN_SPEED FAN=BedOuter SPEED=0
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############ Command overrides ############
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# Override, set fan speeds to low and start monitoring loop.
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[gcode_macro SET_HEATER_TEMPERATURE]
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rename_existing: _SET_HEATER_TEMPERATURE
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gcode:
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# Parameters
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{% set HEATER = params.HEATER|default("None") %}
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{% set TARGET = params.TARGET|default(0)|int %}
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if HEATER|lower == "extruder" %}
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M104 S{TARGET}
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{% elif HEATER|lower == "heater_bed" %}
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M99140 S{TARGET}
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{% else %}
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{action_respond_info("Heater %s not supported" % HEATER)}
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{% endif %}
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# Set fans to low if heater_bed temp is requested above threshold temp, and kick off monitoring loop.
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{% if HEATER|lower == "heater_bed" %}
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{% if TARGET >= THRESHOLD %}
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BedFansSlow
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=1
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{% else %}
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BedFansOff
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=0 # Cancel bed fan loop if it's running
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{% endif %}
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{% endif %}
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# Override M190 (Wait for Bed Temperature)
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# As a bonus, use TEMPERATURE_WAIT so we don't have to wait for PID to level off.
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[gcode_macro M190]
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rename_existing: M99190
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gcode:
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# Parameters
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{% set S = params.S|int %}
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if S >= THRESHOLD %}
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BedFansSlow # >= Threshold temp: Low speed fans while heating
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{% else %}
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BedFansOff # < Threshold temp: Turn bed fans off
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{% endif %}
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M140 {% for p in params
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%}{'%s%s' % (p, params[p])}{%
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endfor %} # Set bed temp
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TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={S|int} MAXIMUM={S|int + 5} # Wait for bed temp within 5 degrees
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# Post-heating fan speeds
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{% if S >= THRESHOLD %}
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BedFansFast # >= Threshold temp: Higher speed fans after heating finished
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{% endif %}
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# Replace M140 (Set Bed Temperature) to just be an alias of SET_HEATER_TEMPERATURE (which has associated bed fan logic if enabled)
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[gcode_macro M140]
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rename_existing: M99140
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gcode:
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# Parameters
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{% set S = params.S|float %}
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SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={S}
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# Replace TURN_OFF_HEATERS
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[gcode_macro TURN_OFF_HEATERS]
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rename_existing: _TURN_OFF_HEATERS
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gcode:
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BedFansOff
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_TURN_OFF_HEATERS
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################ Monitoring loop #####################
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# Turns bed fans to "fast" speed once target bed temp is reached.
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[delayed_gcode bedfanloop]
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gcode:
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if printer.heater_bed.target >= THRESHOLD %} # Continue only if target temp greater than threshold.
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{% if printer.heater_bed.temperature|int >= (printer.heater_bed.target|int - 1) %}
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BedFansFast # If within 1 degree of target temp: Higher speed fans
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{% else %}
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=5 # If temp not reached yet: loop again
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{% endif %}
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{% endif %}
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@ -0,0 +1,123 @@
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############### Config options ##################
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[gcode_macro bedfanvars]
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variable_threshold: 100 # If bed temp target is above this threshold, fans will be enabled. If temp is set to below this threshold, fans will be disabled.
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variable_fast: 0.6 # Fan speed once bed temp is reached
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variable_slow: 0.2 # Fan speed while bed is heating
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gcode:
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########## Bed Fans #########
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[fan_generic BedFans]
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pin: # Change me
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#cycle_time: 0.05
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kick_start_time: 0.5
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########## Aliases #########
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[gcode_macro BedFansSlow]
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gcode:
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# Vars
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{% set SLOW = printer["gcode_macro bedfanvars"].slow|float %}
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SET_FAN_SPEED FAN=BedFans SPEED={SLOW}
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[gcode_macro BedFansFast]
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gcode:
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# Vars
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{% set FAST = printer["gcode_macro bedfanvars"].fast|float %}
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SET_FAN_SPEED FAN=BedFans SPEED={FAST}
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[gcode_macro BedFansOff]
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gcode:
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SET_FAN_SPEED FAN=BedFans SPEED=0
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############ Command overrides ############
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# Override, set fan speeds to low and start monitoring loop.
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[gcode_macro SET_HEATER_TEMPERATURE]
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rename_existing: _SET_HEATER_TEMPERATURE
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gcode:
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# Parameters
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{% set HEATER = params.HEATER|default("None") %}
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{% set TARGET = params.TARGET|default(0)|int %}
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if HEATER|lower == "extruder" %}
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M104 S{TARGET}
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{% elif HEATER|lower == "heater_bed" %}
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M99140 S{TARGET}
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{% else %}
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{action_respond_info("Heater %s not supported" % HEATER)}
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{% endif %}
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# Set fans to low if heater_bed temp is requested above threshold temp, and kick off monitoring loop.
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{% if HEATER|lower == "heater_bed" %}
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{% if TARGET >= THRESHOLD %}
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BedFansSlow
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=1
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{% else %}
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BedFansOff
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=0 # Cancel bed fan loop if it's running
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{% endif %}
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{% endif %}
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# Override M190 (Wait for Bed Temperature)
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# As a bonus, use TEMPERATURE_WAIT so we don't have to wait for PID to level off.
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[gcode_macro M190]
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rename_existing: M99190
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gcode:
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# Parameters
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{% set S = params.S|int %}
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if S >= THRESHOLD %}
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BedFansSlow # >= Threshold temp: Low speed fans while heating
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{% else %}
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BedFansOff # < Threshold temp: Turn bed fans off
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{% endif %}
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M140 {% for p in params
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%}{'%s%s' % (p, params[p])}{%
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endfor %} # Set bed temp
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TEMPERATURE_WAIT SENSOR=heater_bed MINIMUM={S|int} MAXIMUM={S|int + 5} # Wait for bed temp within 5 degrees
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# Post-heating fan speeds
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{% if S >= THRESHOLD %}
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BedFansFast # >= Threshold temp: Higher speed fans after heating finished
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{% endif %}
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# Replace M140 (Set Bed Temperature) to just be an alias of SET_HEATER_TEMPERATURE (which has associated bed fan logic if enabled)
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[gcode_macro M140]
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rename_existing: M99140
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gcode:
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# Parameters
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{% set S = params.S|float %}
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SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET={S}
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# Replace TURN_OFF_HEATERS
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[gcode_macro TURN_OFF_HEATERS]
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rename_existing: _TURN_OFF_HEATERS
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gcode:
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BedFansOff
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_TURN_OFF_HEATERS
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################ Monitoring loop #####################
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# Turns bed fans to "fast" speed once target bed temp is reached.
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[delayed_gcode bedfanloop]
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gcode:
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# Vars
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{% set THRESHOLD = printer["gcode_macro bedfanvars"].threshold|int %}
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{% if printer.heater_bed.target >= THRESHOLD %} # Continue only if target temp greater than threshold.
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{% if printer.heater_bed.temperature|int >= (printer.heater_bed.target|int - 1) %}
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BedFansFast # If within 1 degree of target temp: Higher speed fans
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{% else %}
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UPDATE_DELAYED_GCODE ID=bedfanloop DURATION=5 # If temp not reached yet: loop again
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{% endif %}
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{% endif %}
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## <b>Macros and Usage</b>
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See <b>bedfans.cfg</b> or <b>bedfans-dualcontrol.cfg</b>* for klipper macros.
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<b>1)</b> Place the .cfg file in the same directory as your printer.cfg file.
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<b>2)</b> Add `[include bedfans.cfg]` to your printer.cfg.
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<b>3)</b> Change `pin` for your fans in the second section. This is intentionally left blank so that it will error if you don't fill it in.
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<b>4)</b> Configure the options in the first section:
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* `variable_threshold` sets the target bed temperature at which your bed fans will activate.
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* `variable_slow` sets the "slow" fan speed for when the bed is heating to the target temp.
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* `variable_fast` sets the "fast" fan speed for when the bed is at temperature.
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* This may have to be lower than 100% fan speed, especially with quad fans.
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* If you get <i>"Heater heater_bed not heating at expected rate"</i> errors, then you have set this too high.
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The macros will intercept bed heating commands, so you do <i>not</i> need to add anything to your other macros.
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\* <i>Optionally allows for setting inner and outer fan speeds separately, for a quad fan configuration. I like to set my inner fans to be run slightly slower to try and keep the airflow somewhat even.</i>
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## <b>5015 Fan Mount</b>
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Bill of materials (per fan):
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- 1x 5015 fan
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- 1x M3x25
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- 1x M3x20
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- 1x M3 heat set insert
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- 1x M3x8 or M3x10 <i>(optional, I only mount with one screw)</i>
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## <b>FAQ</b>
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#### How much difference does it make?
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* My chamber now reaches about 60-66C with a quad fan configuration, whereas it only reached roughly 48-50C previously. Chamber temp is also reached more quickly.
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#### Can I push it further?
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* Technically your bed heater is not being run at full power with the default configs, however I <i>do not recommend pushing it.</i> Since you can't control max power at runtime, your bed will run at too high of a power while heating, risking warping your bed.
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* <i>I also do not recommend tinkering with your verify_heater (thermal runaway protection) settings.</i>
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#### What power should I run my bed heater at?
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* Recommended max_power is 0.4 watts per cm<sup>2</sup>:
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```
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For example, for a 300 mm^2 bed:
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30 cm * 30 cm = 900 cm^2.
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900 cm^2 * 0.4 Watts = 360 Watts max.
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If you have a 750 watt heater, that's 48% power, or 0.48 max_power.
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```
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#### Do I need to PID tune my bed again?
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* I did not find it necessary. Bed heaters do not seem to be terribly sensitive to this.
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#### My bed temperature dips when the fans kick on fully, is this normal?
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* Yes, this is normal. It should recover within 60 seconds. If not, then your fan speeds are too high.
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#### What brand fans should I use?
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* I just used generic multi-pack fans. There is no need for anything fancy here.
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#### Should I use single, dual or triple/quad fans?
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* Triple/quad fans is more for <i>even</i> airflow than <i>raw</i> airflow. In fact you will likely not be able to run them at 100% without outrunning your bed heater. I personally prefer triple/quad fans to avoid any possibility of "tacoing" my bed due to uneven temperatures. Triple fans is probably the "sweet spot".
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#### Is "dual control" necessary?
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* Almost certainly not. I originally set it up that way because it was easier to wire in my particular case, so I took advantage of it. Triple fans with "single" control is probably the best balance of cost, complexity, and performance.
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#### I insist on running quad fans at 100%, why am I having a bad time?
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* No. Stop it. Bad.
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## <b>Images</b>
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<i>(looks a bit tight since CAD is for a 250mm)</i>
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## <B>Single MGN9H Carriage</B>
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Modified carriage to:
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* Remove the second MGN9 mount
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* Add optional toolhead X endstop (to allow for umbilical)
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Make sure your switch lever is in the orientation shown to ensure it triggers properly against the XY joint.
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@ -95,9 +95,11 @@ like so:
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|eddie |[V1.8 12mm Z Mod](./eddie/V1.8_12mm_Z_Mod) |Add V1.8 option for 12mm Z rods |:x: |:heavy_check_mark: |:x: |:x:|
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|edwardyeeks |[Decontaminator Purge Bucket & Nozzle Scrubber](./edwardyeeks/Decontaminator_Purge_Bucket_&_Nozzle_Scrubber) |Removeable purge bucket with nozzle scrubber |:x: |:heavy_check_mark: |:heavy_check_mark: |:x:|
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| |[V2.4 Z Drive Motor Tensioner Mod](edwardyeeks/V2.4_z_drive_motor_tensioner_mod) |Braced motor tensioner for z drive |:x: |:x: |:heavy_check_mark: |:x:|
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| Ellis |[15x15 Drag Chain Ends](./Ellis/15x15_Drag_Chain_End) | 15x15 drag chain end pieces | :grey_question: | :grey_question: |:heavy_check_mark: |:x:|
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| Ellis |[15x15 Drag Chain Ends](./Ellis/15x15_Drag_Chain_End) | 15x15 drag chain end pieces | :grey_question: | :grey_question: |:heavy_check_mark: |:grey_question:|
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| |[Badge Retractor Mount](./Ellis/Badge_Retractor_Mount) | Extrusion mount for badge retractor to keep bowden tube out of the way. | :grey_question: | :grey_question: |:heavy_check_mark: |:x:|
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| |[Bed Fans](./Ellis/Bed_Fans) | Bed fan control macros and 5015 bed fan mounts | :x: | :x: |:heavy_check_mark: |:x:|
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| |[Short Z Joints](./Ellis/Short_Z_Joints) | Shorter Z joints for the v2.4 |:x: |:x: |:heavy_check_mark: |:x:|
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| |[Single MGN9H Carriage](./Ellis/Single_MGN9H_Carriage) | Single MGN9H toolhead carriage with umbilical (x endstop) support |:x: |:grey_question: |:heavy_check_mark: |:grey_question:|
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| ElPoPo | [Removable Doors](./ElPoPo/RemovableDoors) | New hinge to easily remove the door and have a wide opening V2.x | :x: | :x: | :heavy_check_mark: | :x:|
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| Empusas | [Power Skirt 2.x FN284-10-06](./Empusas/PowerSkirt_FN284-10-06) | Power Skirt for Schaffner FN284-10-06 V2.x | :x: | :x: | :heavy_check_mark: | :x:|
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| | [Mounts for Terminal Blocks NC933 SPL-62](./Empusas/Terminal_Blocks_NC933_SPL-62) | Mounts for Terminal Blocks NC933 and SPL-62 from AliExpress | :grey_question: | :grey_question: | :heavy_check_mark: | :grey_question:|
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