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pa_cal.cfg
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[gcode_macro PA_CAL]
# https://github.com/ksanislo/klipper-pa_cal
# Klipper pressure advance line calibration macro.
# Usage: PA_CAL BED=100 EXTRUDER=240 PA_START=0.0 PA_STOP=0.1 PA_STEPS=20 NOZZLE=0.4
# Or you can execute with no parameters, which will use values from printer.cfg and saved_variables.cfg.
# Based on http://realdeuce.github.io/Voron/PA/pressure_advance.html
# Sourced from u/Deepsiks, assisted by u/imoftendisgruntled, u/scul86, and thanks to u/beansisfat, u/stray_r
# Cleaned up and moved to using saved_variables.cfg by u/jibbsisme
# Fully parameterized and extended by u/ksanislo
description: Tune Pressure Advance
gcode:
# saved_variables.cfg
{% set svv = printer.save_variables.variables %}
# macro parameters. The advanage of this approach over default()
# is that one can specify only subset of macro parameters, the rest
# will be set according to save_variables config while default() filter
# sets 0 for all unspecified parameters of the macro.
{% set BED = (params.BED or svv.pa_bed_temp)|int %}
{% set CHAMBER = (params.CHAMBER or svv.pa_chamber_temp)|int %}
{% set EXTRUDER = (params.EXTRUDER or svv.pa_extruder_temp)|int %}
{% set PA_START = (params.PA_START or svv.pa_start)|float %}
{% set PA_STOP = (params.PA_STOP or svv.pa_stop)|float %}
{% set PA_STEPS = (params.PA_STEPS or svv.pa_steps)|int %}
{% set NOZZLE = (params.NOZZLE or printer.configfile.config["extruder"]["nozzle_diameter"])|float %}
# load variables
{% set FD = printer.configfile.config["extruder"]["filament_diameter"]|float %}
{% set AR = svv.pa_accel|default(3000) %}
{% set DR = svv.pa_accel_to_decel|default(1500) %}
{% set SL = svv.pa_slow_length|default(20) %}
{% set FL = svv.pa_fast_length|default(40) %}
{% set BL = svv.pa_between_lines|default(5) %}
{% set MS = svv.pa_move_speed|default(300)*60 %}
{% set SS = svv.pa_slow_speed|default(20)*60 %}
{% set FS = svv.pa_fast_speed|default(120)*60 %}
{% set ZS = svv.pa_z_speed|default(20)*60 %}
{% set RS = svv.pa_retract_speed|default(35)*60 %}
{% set RD = svv.pa_retract_dist|default(0.4) %}
{% set LH = svv.pa_layer_height|default(0.20) %}
{% set LR = svv.pa_line_ratio|default(1.25) %}
{% set ER = svv.pa_extrude_ratio|default(1) %}
{% set BE = svv.pa_bold_extrude|default(1.1)|float %}
{% set EF = svv.pa_enable_frame|default(1) %}
{% set EM = svv.pa_enable_markers|default(1) %}
{% set PV = svv.pa_print_values|default(1) %}
{% set PH = svv.pa_print_height|default(4) %}
{% set ML = svv.pa_marker_length|default(BL*2) %}
{% set DU = svv.pa_draw_underline|default(1) %}
{% set UO = svv.pa_underline_overlap|default(0.25)|float %}
{% set PP = svv.pa_precision|default("%.3f") %}
{% set PX = PH/4 %}
# calculated variables
{% if printer.configfile.config['printer']['kinematics'] == 'delta' %}
{% set X_MID = 0.0|float %}
{% set Y_MID = 0.0|float %}
{% else %}
{% set X_MID = printer.configfile.config["stepper_x"]["position_max"]|float / 2.0 %}
{% set Y_MID = printer.configfile.config["stepper_y"]["position_max"]|float / 2.0 %}
{% endif %}
{% set STARTX = X_MID - (((SL*2)+FL)/2) %}
{% set STARTY = Y_MID - (PA_STEPS * BL / 2.0) %}
{% set PA_STEP = (PA_STOP - PA_START) / PA_STEPS|float %}
{% set LINE_WIDTH = NOZZLE * LR|float %}
{% set ERAT = LINE_WIDTH * LH / ((FD / 2)*(FD / 2) * 3.14159) * ER|float %}
START_PRINT BED={BED} EXTRUDER={EXTRUDER}
PRIME_LINE
G21 ; millimeter units
G90 ; absolute XYZ
M83 ; relative E
SET_VELOCITY_LIMIT ACCEL={AR} ACCEL_TO_DECEL={DR}
G92 E0
M106 S0
# draw framing lines
{% if EF == 1 %} ; only frame if enabled
G1 X{STARTX} Y{STARTY} F{MS} ; move to start position
G1 Z{LH} F{ZS} ; move to layer height
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY+(PA_STEPS*BL)} E{ERAT*(PA_STEPS*BL)*BE} F{SS}; print first frame line
G1 X{STARTX+LINE_WIDTH} ; shift over
G1 Y{STARTY} E{ERAT*(PA_STEPS*BL)*BE} ; print first return frame line
G1 E-{RD} F{RS} ; retract
G1 X{STARTX+FL+(SL*2)} F{MS} ; move to second line start
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY+(PA_STEPS*BL)} E{ERAT*(PA_STEPS*BL)*BE} F{SS}; print second frame line
G1 X{STARTX+FL+(SL*2)-LINE_WIDTH} ; shift over
G1 Y{STARTY} E{ERAT*(PA_STEPS*BL)*BE} ; print second return frame line
G1 E-{RD} F{RS} ; retract
{% endif %}
# draw markers
{% if EM == 1 %} ; only when markers enabled
G1 X{STARTX+SL+FL} Y{STARTY-ML} F{MS} ; marker 1 start
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY} E{ERAT*ML} F{SS} ; marker 1 end
G1 E-{RD} F{RS} ; retract
G1 X{STARTX+SL} Y{STARTY-ML} F{MS} ; marker 2 start
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY} E{ERAT*ML} F{SS} ; marker 2 end
G1 E-{RD} F{RS} ; retract
G1 X{STARTX+SL} Y{STARTY+(PA_STEPS*BL)+ML} F{MS} ; marker 3 start
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY+(PA_STEPS*BL)} E{ERAT*ML} F{SS} ; marker 3 end
G1 E-{RD} F{RS} ; retract
G1 X{STARTX+SL+FL} Y{STARTY+(PA_STEPS*BL)+ML} F{MS} ; marker 4 start
G1 E{RD} F{RS} ; un-retract
G1 Y{STARTY+(PA_STEPS*BL)} E{ERAT*ML} F{SS} ; marker 4 end
G1 E-{RD} F{RS} ; retract
{% endif %}
# draw the actual test lines
{% for i in range(0, PA_STEPS+1) %}
{% set PA_VAL = PA_START + (i * PA_STEP) %}
SET_PRESSURE_ADVANCE ADVANCE={PA_VAL} ; set Pressure Advance
M117 PA={PA_VAL}, STEP={PA_STEP}.
G1 X{STARTX} Y{STARTY+(BL*i)} F{MS} ; move to start position
G1 Z{LH} F{ZS} ; move to layer height
G1 E{RD} F{RS} ; un-retract
G1 X{(STARTX+SL)} Y{STARTY+(BL*i)} E{ERAT*SL} F{SS} ; print line part one
G1 X{(STARTX+SL+FL)} Y{STARTY+(BL*i)} E{ERAT*FL} F{FS} ; print line part two
G1 X{(STARTX+SL+FL+SL)} Y{STARTY+(BL*i)} E{ERAT*SL} F{SS} ; print line part three
G1 E-{RD} F{RS} ; retract
G1 Z{LH*2} F{ZS} ; move above layer height
{% endfor %}
# draw pa value labels
{% if PV == 1 %}
{% for i in range(0, PA_STEPS+1) %}
{% if i is divisibleby(((PH+1)/BL)|round(0,'ceil')|int) %}
{% set PA_VAL = PA_START + (i * PA_STEP) %}
SET_PRESSURE_ADVANCE ADVANCE={PA_VAL} ; set Pressure Advance
M117 PA={PA_VAL}, STEP={PA_STEP}
G1 X{STARTX+FL+(SL*2)+PX} Y{STARTY+(BL*i)} F{MS} ; move to label position
{% for a in PP|format(PA_VAL) %} ; convert float to string with specified precision
G1 Z{LH} F{ZS} ; move to layer height
G91 ; relative positioning
{% if a == "." %}
G1 Y-{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 Y{0.5*PX} E{ERAT*(0.5*PX)}
G1 X{0.5*PX} E{ERAT*(0.5*PX)}
G1 Y-{0.5*PX} E{ERAT*(0.5*PX)}
G1 X-{0.5*PX} E{ERAT*(0.5*PX)}
G1 E-{RD} F{RS} ; retract
G1 X{1.5*PX} Y{2*PX} F{MS}
{% elif a == "0" %}
G1 Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X{2*PX} E{ERAT*2*PX} F{SS}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 Y{4*PX} E{ERAT*4*PX}
G1 E-{RD} F{RS} ; retract
G1 X{3*PX} Y-{2*PX} F{MS}
{% elif a == "1" %}
G1 X{PX} Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 Y-{4*PX} E{ERAT*4*PX} F{SS}
G1 E-{RD} F{RS} ; retract
G1 X{2*PX} Y{2*PX} F{MS}
{% elif a == "2" %}
G1 Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X{2*PX} E{ERAT*2*PX} F{SS}
G1 Y-{2*PX} E{ERAT*2*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 Y-{2*PX} E{ERAT*2*PX}
G1 X{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 X{PX} Y{2*PX} F{MS}
{% elif a == "3" %}
G1 Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X{2*PX} E{ERAT*2*PX} F{SS}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X{2*PX} E{ERAT*2*PX} F{SS}
G1 E-{RD} F{RS} ; retract
G1 X{PX} F{MS}
{% elif a == "4" %}
G1 Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 Y-{2*PX} E{ERAT*2*PX} F{SS}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y{2*PX} F{MS}
G1 Y-{4*PX} E{ERAT*4*PX} F{SS}
G1 E-{RD} F{RS} ; retract
G1 X{PX} Y{2*PX} F{MS}
{% elif a == "5" %}
G1 X{2*PX} Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X-{2*PX} E{ERAT*2*PX} F{SS}
G1 Y-{2*PX} E{ERAT*2*PX}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y-{2*PX} E{ERAT*2*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 X{3*PX} Y{2*PX} F{MS}
{% elif a == "6" %}
G1 X{2*PX} Y{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X-{2*PX} E{ERAT*2*PX} F{SS}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y{2*PX} E{ERAT*2*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 X{3*PX} F{MS}
{% elif a == "7" %}
G1 E{RD} F{RS} ; un-retract
G1 Y{2*PX} E{ERAT*2*PX} F{SS}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 E-{RD} F{RS} ; retract
G1 X{PX} Y{2*PX} F{MS}
{% elif a == "8" %}
G1 E{RD} F{RS} ; un-retract
G1 Y{2*PX} E{ERAT*2*PX} F{SS}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 Y{2*PX} E{ERAT*2*PX}
G1 X{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 X{PX} F{MS}
{% elif a == "9" %}
G1 X{2*PX} F{MS}
G1 E{RD} F{RS} ; un-retract
G1 X-{2*PX} E{ERAT*2*PX} F{SS}
G1 Y{2*PX} E{ERAT*2*PX}
G1 X{2*PX} E{ERAT*2*PX}
G1 Y-{4*PX} E{ERAT*4*PX}
G1 X-{2*PX} E{ERAT*2*PX}
G1 E-{RD} F{RS} ; retract
G1 X{3*PX} Y{2*PX} F{MS}
{% endif %}
G90 ; absolute positioning
G1 Z{LH*2} F{ZS} ; move above layer height
{% endfor %}
{% if DU == 1 %} ; if draw_underline is enabled
G1 X{STARTX+FL+(SL*2)+(PX*2)+(PP|format(PA_VAL)|length-1)*(PX*3)} Y{STARTY+(BL*i)-(PX*2)-(LINE_WIDTH*(1-UO))} F{MS} ; move to underline position
G1 Z{LH} F{ZS} ; move to layer height
G1 E{RD} F{RS} ; un-retract
G1 X{STARTX+FL+(SL*2)} E{ERAT*((PX*2)+(PP|format(PA_VAL)|length-1)*(PX*3))*BE} F{SS} ; draw underline
{% if i == 0 %} ; connect first underline to the frame
G1 Y{STARTY} E{ERAT*((PX*2)+(LINE_WIDTH*(1-UO)))*BE} F{SS}
{% endif %}
G1 E-{RD} F{RS} ; retract
{% endif %}
{% endif %}
{% endfor %}
{% endif %}
# set pressure advance back to the default value
{% set PAF=printer.configfile.settings.extruder.pressure_advance|float %}
SET_PRESSURE_ADVANCE ADVANCE={PAF}
END_PRINT
# these may not work, in which case you will need to count and do the math yourself!
#M117 New PA = ({PA_START} + (bestLine * {PA_STEP}) )
M117 Pick your best line and use the printed value.
{action_respond_info ("Pick your best line and use the printed value.")}