printer.cfg

# This file contains common pin mappings for the BIGTREETECH SKR
# MINI 2.0. To use this config, the firmware should be compiled for 
# the STM32F103 with a "28KiB bootloader". Also select "enable extra 
# low-level configuration options" and configure "GPIO pins to set 
# at micro-controller startup" to "!PA14".

# The "make flash" command does not work on the SKR mini. Instead,
# after running "make", copy the generated "out/klipper.bin" file to a
# file named "firmware.bin" on an SD card and then restart the SKR
# mini with that SD card.

# See the example.cfg file for a description of available parameters.

[mcu]
##	Obtain mcu value by "ls -l /dev/serial/by-id/" 
serial: /dev/serial/by-id/usb-Klipper_rp2040_45503571280DD2A8-if00
#restart_method: command
#serial: /dev/serial/by-id/usb-Klipper_stm32f103xe_30FFD305344E393714750857-if00
#baud: 250000

[mcu rpi]
serial: /tmp/klipper_host_mcu

[adxl345]
cs_pin: rpi:None

[resonance_tester]
accel_chip: adxl345
probe_points:
    60, 60, 20  # an example

[input_shaper]
shaper_freq_x: 77.2
shaper_type_x: mzv
shaper_freq_y: 76.8
shaper_type_y: ei


[gcode_arcs] 
resolution: 0.2

[stepper_x]
step_pin: gpio11
dir_pin: gpio10           # check https://docs.vorondesign.com/build/startup/#v0 if moving in the wrong direction
enable_pin: !gpio12
rotation_distance: 40
microsteps: 32
endstop_pin: ^gpio4 
position_endstop: 120
position_max: 120
homing_speed: 50        # Increase after initial setup, Max 100
homing_retract_dist: 5
homing_positive_dir: true

[tmc2209 stepper_x]
uart_pin: gpio9
tx_pin: gpio8
uart_address: 0
interpolate: False
run_current: 1        # For V0.1 spec NEMA14 40Ncm
hold_current: 0.5
sense_resistor: 0.110
stealthchop_threshold: 999999


[stepper_y]
step_pin: gpio6
dir_pin: gpio5            # check https://docs.vorondesign.com/build/startup/#v0 if moving in the wrong direction
enable_pin: !gpio7
rotation_distance: 40
microsteps: 32
endstop_pin: ^gpio3
position_endstop: 120
position_max: 120
homing_speed: 50        # Increase after initial setup, Max 100
homing_retract_dist: 5
homing_positive_dir: true

[tmc2209 stepper_y]
uart_pin: gpio9
tx_pin: gpio8
uart_address: 2
interpolate: False
run_current: 1        # For V0.1 spec NEMA14 40Ncm
hold_current: 0.5
sense_resistor: 0.110
stealthchop_threshold: 999999


[stepper_z]
step_pin: gpio19
dir_pin: gpio28           # Remove ! if moving opposite direction
enable_pin: !gpio2
rotation_distance: 8    # For T8x8 integrated lead screw
microsteps: 16
endstop_pin: ^gpio25
position_endstop: -0.10
position_max: 120
position_min: -1.5
homing_speed: 25        # Max 100
second_homing_speed: 3.0
homing_retract_dist: 3.0

[tmc2209 stepper_z]
uart_pin: gpio9
tx_pin: gpio8
uart_address: 1
interpolate: True
#run_current: 0.37       # For V0.1 spec NEMA17 LDO-42STH25-1004CL200E 1.0A  
#hold_current: 0.35
run_current: 0.2         # For V0.1 spec NEMA17 OMC 17LS13-0404E-200G 0.4A 
hold_current: 0.15
sense_resistor: 0.110
stealthchop_threshold: 500


[extruder]
step_pin: gpio14
dir_pin: gpio13            # Add ! if moving opposite direction
enable_pin: !gpio15
full_steps_per_rotation: 200    # 1.8° motor LDO
#full_steps_per_rotation: 400    # 0.9° motor i.e OMC 14HR07-1004VRN
rotation_distance: 22.5         # See calibrating rotation_distance on extruders doc
#gear_ratio: 50:10               # For Mini Afterburner
gear_ratio: 5:1
microsteps: 16
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: gpio23
sensor_type: EPCOS 100K B57560G104F # Adjust for your hotend thermistor (see options below)
sensor_pin: gpio27
#control: pid            # Do PID calibration
#pid_Kp: 28.182
#pid_Ki: 1.978
#pid_Kd: 100.397
min_temp: 0
max_temp: 290
min_extrude_temp: 180
max_extrude_only_distance: 780.0
max_extrude_cross_section: 0.8
pressure_advance: 0.04   # See tuning pressure advance doc
pressure_advance_smooth_time: 0.040

[tmc2209 extruder]
uart_pin: gpio9
tx_pin: gpio8
uart_address: 3
interpolate: True
run_current: 0.4	# for LDO 36STH17-1004AHG 
hold_current: 0.2	# for LDO 36STH17-1004AHG
#run_current: 0.5	# for OMC 14HR07-1004VRN rated at 1A
#hold_current: 0.3	# for OMC 14HR07-1004VRN rated at 1A
sense_resistor: 0.110
stealthchop_threshold: 500


[heater_bed]
heater_pin: gpio21
sensor_type: NTC 100K beta 3950 # For Keenovo, verify yours
sensor_pin: gpio26
smooth_time: 3.0
#max_power: 0.6         # Only need this for 100w pads
min_temp: 0
max_temp: 130
#control: pid            # Do PID calibration
#pid_kp = 60.013
#pid_ki = 3.306
#pid_kd = 272.308

[printer]
kinematics: corexy
max_velocity: 450
#max_accel: 3500
max_accel: 10000
max_accel_to_decel: 10000
max_z_velocity: 15
max_z_accel: 45
#square_corner_velocity: 6.0
square_corner_velocity: 5.0

[heater_fan hotend_fan]
pin: gpio18
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
#fan_speed: 1.0         # You can't PWM the delta fan unless using blue wire


[fan]
pin: gpio17
max_power: 1.0
kick_start_time: 0.5
#depending on your fan, you may need to increase or reduce this value
#if your fan will not start
off_below: 0.13
cycle_time: 0.010


[idle_timeout]
timeout: 1800


[safe_z_home]
home_xy_position: 120,120
speed: 50.0
z_hop: 5


# Tool to help adjust bed leveling screws. One may define a
# [bed_screws] config section to enable a BED_SCREWS_ADJUST g-code
# command.
[bed_screws]
screw1: 60,5
screw1_name: front screw
screw2: 5,115
screw2_name: back left
screw3: 115,115
screw3_name: back right


[gcode_macro PRINT_START]
#   Use PRINT_START for the slicer starting script - please customize for your slicer of choice
gcode:
    G28                            ; home all axes
    G1 Z20 F3000                   ; move nozzle away from bed
    PRIME_LINE
   
[gcode_macro PRINT_END]
#   Use PRINT_END for the slicer ending script - please customize for your slicer of choice
gcode:
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder
    G1 E-4.0 F3600                 ; retract filament
    G91                            ; relative positioning

    #   Get Boundaries
    {% set max_x = printer.configfile.config["stepper_x"]["position_max"]|float %}
    {% set max_y = printer.configfile.config["stepper_y"]["position_max"]|float %}
    {% set max_z = printer.configfile.config["stepper_z"]["position_max"]|float %}

    #   Check end position to determine safe direction to move
    {% if printer.toolhead.position.x < (max_x - 20) %}
        {% set x_safe = 20.0 %}
    {% else %}
        {% set x_safe = -20.0 %}
    {% endif %}

    {% if printer.toolhead.position.y < (max_y - 20) %}
        {% set y_safe = 20.0 %}
    {% else %}
        {% set y_safe = -20.0 %}
    {% endif %}

    {% if printer.toolhead.position.z < (max_z - 2) %}
        {% set z_safe = 2.0 %}
    {% else %}
        {% set z_safe = max_z - printer.toolhead.position.z %}
    {% endif %}

    G0 Z{z_safe} F3600             ; move nozzle up
    G0 X{x_safe} Y{y_safe} F20000  ; move nozzle to remove stringing
    TURN_OFF_HEATERS
    M107                           ; turn off fan
    G90                            ; absolute positioning
    G0 X60 Y{max_y} F3600          ; park nozzle at rear
	
[gcode_macro LOAD_FILAMENT]
gcode:
   M83                            ; set extruder to relative
   G1 E30 F300                    ; load
   G1 E15 F150                    ; prime nozzle with filament
   M82                            ; set extruder to absolute
    
[gcode_macro UNLOAD_FILAMENT]
gcode:
   M83                            ; set extruder to relative
   G1 E10 F300                    ; extrude a little to soften tip
   G1 E-40 F1800                  ; retract some, but not too much or it will jam
   M82                            ; set extruder to absolute

# Sensor Types
#   "EPCOS 100K B57560G104F"
#   "ATC Semitec 104GT-2"
#   "NTC 100K beta 3950" (Keenovo Heater Pad)
#   "Honeywell 100K 135-104LAG-J01"
#   "NTC 100K MGB18-104F39050L32"
#   "AD595"
#   "PT100 INA826"

#   Prime the nozzle 
[gcode_macro PRIME_LINE]
gcode: 
    SAVE_GCODE_STATE NAME=BEFORE_PRIME
    M117 Prime Line
    M83
    {% if "z" not in printer.toolhead.homed_axes %}
        G28                             ;Only G28 Home if needed
    {% endif %}
    G92 E0                              ;Reset Extruder
    G1 Z5.0 F3000                       ;Move Z Axis up
    G1 X35 Y0 Z0.24 F5000.0             ;Move to start position (5,30,.24)
    G1 X85 Y0 Z0.24 F1500.0 E5      ;Draw the first 200mm line
    G1 X85 Y0.5 Z0.24 F5000.0        ;Move to side a little
    G1 X35 Y0.5 Z0.24 F1500.0 E5  
    G92 E0                              ;Reset Extruder
    G4 P2000                            ; wait 2 sec
    G1 X20 Y0 Z0.24 F10000.0           ;Move sideways
    ;G1 Z5.0 F3000                       ;Move Z Axis up
    RESTORE_GCODE_STATE NAME=BEFORE_PRIME
    
    

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.
#*#
#*# [extruder]
#*# control = pid
#*# pid_kp = 26.114
#*# pid_ki = 1.658
#*# pid_kd = 102.826
#*#
#*# [heater_bed]
#*# control = pid
#*# pid_kp = 60.013
#*# pid_ki = 3.306
#*# pid_kd = 272.308