HI,
I am having some issues with Smoothieboard on my Custom built Cartesian printer, been running for a few months and i have just decided to a Z-axis probe. I have been getting some behaviours i cannot understand, So i am obviously doing something wrong problem is to do with z-axis probing and rectangular grid compensation.
Z axis probe is tested and working M119 reports 0 when not triggered and 1 when triggered
If I do a Z-axis probe before i home the printer the Z-axis travels down, triggers the Z-axis probe, returns to home and reports the probe offset height
If I first home (0,0,250) the machine then run a Z-axis probe i get the following warning, “Zprobe not triggered”, The axis makes no attempt to move the Z-axis. (confirmed that the smoothie can detect status change on the switch and that it was reading 0)
Likewise if i run a G29 or a G32 the machine homes, (-420,+200,+250), when the machine is returning from the end stop position back to (0,0,250) the smoothieboard crashes, I have no idea what is causing this crash. Homing works fine when run by its self (or at the start of a print)
Any help would be appreciated, I am stuck at something goes wrong with z-probing once homed but I have been unable to troubleshoot beyond this (my guess is something stupid that I don’t understand the full ramifications of in the config file)
My config file is from github with the following additions
reprap GLCD screen and SD card (not using ext SD card)
Power supply switching
Running extruder from pin 2.8
Printer is cartesian 840x400x250 with a Hermea extruder.
accelerations are failry low at the moment (due to machine size/ still fine tuning)
x,y,z end stops are hall effects (these are super reliable and repeatable, the machine started its life as a pick and place machine)
z-axis probe is a mechanical switch (tested and triggers correctly)
Config file below
# Smoothieboard configuration file
# NOTE Lines must not exceed 132 characters, and '#' characters mean what follows is ignored
## Robot module configurations : general handling of movement G-codes and slicing into moves
# Basic motion configuration
default_feed_rate 2000 # 4000 Default speed (mm/minute) for G1/G2/G3 moves
default_seek_rate 4000 # 4000 Default speed (mm/minute) for G0 moves
mm_per_arc_segment 0.0 # Fixed length for line segments that divide arcs, 0 to disable
#mm_per_line_segment 5 # Cut lines into segments this size
mm_max_arc_error 0.01 # The maximum error for line segments that divide arcs 0 to disable
# note it is invalid for both the above be 0
# if both are used, will use largest segment length based on radius
# Arm solution configuration : Cartesian robot. Translates mm positions into stepper positions
alpha_steps_per_mm 100 # Default 80 Steps per mm for alpha ( X ) stepper
beta_steps_per_mm 100 # Default 80 Steps per mm for beta ( Y ) stepper
gamma_steps_per_mm 160 # Default 1600 Steps per mm for gamma ( Z ) stepper
# Planner module configuration : Look-ahead and acceleration configuration
acceleration 1000 #3000 # Acceleration in mm/second/second.
z_acceleration 500 #500 # Acceleration for Z only moves in mm/s^2, 0 uses acceleration which is the default. DO NOT SET ON A DELTA
junction_deviation 0.005 #0.05
#z_junction_deviation -1 #0.0 # For Z only moves, -1 uses junction_deviation, zero disables junction_deviation on z moves DO NOT SET ON A DELTA
# Cartesian axis speed limits
x_axis_max_speed 8000 # Maximum speed in mm/min
y_axis_max_speed 8000 # Maximum speed in mm/min
z_axis_max_speed 1000 # Maximum speed in mm/min
# Stepper module configuration
# Pins are defined as ports, and pin numbers, appending "!" to the number will invert a pin
alpha_step_pin 2.0!o # Pin for alpha stepper step signal
alpha_dir_pin 0.5o # Pin for alpha stepper direction, add '!' to reverse direction
alpha_en_pin 0.4!o # Pin for alpha enable pin
alpha_current 1.5 # X stepper motor current
alpha_max_rate 8000.0 # Maximum rate in mm/min
beta_step_pin 2.1!o # Pin for beta stepper step signal
beta_dir_pin 0.11o # Pin for beta stepper direction, add '!' to reverse direction
beta_en_pin 0.10!o # Pin for beta enable
beta_current 1.5 # Y stepper motor current
beta_max_rate 8000.0 # Maxmimum rate in mm/min
gamma_step_pin 2.2!o # Pin for gamma stepper step signal
gamma_dir_pin 0.20o # Pin for gamma stepper direction, add '!' to reverse direction
gamma_en_pin 0.19!o # Pin for gamma enable
gamma_current 1.5 # Z stepper motor current
gamma_max_rate 1000.0 # Default 300 Maximum rate in mm/min
## Extruder module configuration
extruder.hotend.enable true # Whether to activate the extruder module at all. All configuration is ignored if false
extruder.hotend.steps_per_mm 818 #140 # Steps per mm for extruder stepper
extruder.hotend.default_feed_rate 600 # Default rate ( mm/minute ) for moves where only the extruder moves
extruder.hotend.acceleration 100 # Acceleration for the stepper motor mm/sec²
extruder.hotend.max_speed 50 # Maximum speed in mm/s
extruder.hotend.step_pin 2.8 #2.3 # Pin for extruder step signal
extruder.hotend.dir_pin 2.13 #0.22 # Pin for extruder dir signal ( add '!' to reverse direction )
extruder.hotend.en_pin 4.29 #0.21 # Pin for extruder enable signal
# Extruder offset
#extruder.hotend.x_offset 0 # X offset from origin in mm
#extruder.hotend.y_offset 0 # Y offset from origin in mm
#extruder.hotend.z_offset 0 # Z offset from origin in mm
# Firmware retract settings when using G10/G11, these are the defaults if not defined, must be defined for each extruder if not using the defaults
#extruder.hotend.retract_length 3 # Retract length in mm
#extruder.hotend.retract_feedrate 45 # Retract feedrate in mm/sec
#extruder.hotend.retract_recover_length 0 # Additional length for recover
#extruder.hotend.retract_recover_feedrate 8 # Recover feedrate in mm/sec (should be less than retract feedrate)
#extruder.hotend.retract_zlift_length 0 # Z-lift on retract in mm, 0 disables
#extruder.hotend.retract_zlift_feedrate 6000 # Z-lift feedrate in mm/min (Note mm/min NOT mm/sec)
delta_current 1.33 #1.5 # First extruder stepper motor current
# Second extruder module configuration
#extruder.hotend2.enable true # Whether to activate the extruder module at all. All configuration is ignored if false
#extruder.hotend2.steps_per_mm 140 # Steps per mm for extruder stepper
#extruder.hotend2.default_feed_rate 600 # Default rate ( mm/minute ) for moves where only the extruder moves
#extruder.hotend2.acceleration 500 # Acceleration for the stepper motor, as of 0.6, arbitrary ratio
#extruder.hotend2.max_speed 50 # mm/s
#extruder.hotend2.step_pin 2.8 # Pin for extruder step signal
#extruder.hotend2.dir_pin 2.13 # Pin for extruder dir signal ( add '!' to reverse direction )
#extruder.hotend2.en_pin 4.29 # Pin for extruder enable signal
#extruder.hotend2.x_offset 0 # x offset from origin in mm
#extruder.hotend2.y_offset 25.0 # y offset from origin in mm
#extruder.hotend2.z_offset 0 # z offset from origin in mm
#epsilon_current 1.33 #1.5 # Second extruder stepper motor current
## Temperature control configuration
# First hotend configuration
temperature_control.hotend.enable true # Whether to activate this ( "hotend" ) module at all.
temperature_control.hotend.thermistor_pin 0.23 # Pin for the thermistor to read
temperature_control.hotend.heater_pin 1.23 #2.7 # Pin that controls the heater, set to nc if a readonly thermistor is being defined
temperature_control.hotend.thermistor Semitec #EPCOS100K # See
#temperature_control.hotend.beta 4066 # Or set the beta value
temperature_control.hotend.set_m_code 104 # M-code to set the temperature for this module
temperature_control.hotend.set_and_wait_m_code 109 # M-code to set-and-wait for this module
temperature_control.hotend.designator T # Designator letter for this module
temperature_control.hotend.max_temp 285 # Set maximum temperature - Will prevent heating above 300 by default
#temperature_control.hotend.min_temp 0 # Set minimum temperature - Will prevent heating below if set
# Safety control is enabled by default and can be overidden here, the values show the defaults
#temperature_control.hotend.runaway_heating_timeout 900 # How long it can take to heat up, max is 2040 seconds.
#temperature_control.hotend.runaway_cooling_timeout 0 # How long it can take to cool down if temp is set lower, max is 2040 seconds
#temperature_control.hotend.runaway_range 20 # How far from the set temperature it can wander, max setting is 63°C
# PID configuration
temperature_control.hotend.p_factor 19.9 #13.7 # P ( proportional ) factor
temperature_control.hotend.i_factor 0.758 #0.097 # I ( integral ) factor
temperature_control.hotend.d_factor 130 #24 # D ( derivative ) factor
#temperature_control.hotend.max_pwm 64 # Max pwm, 64 is a good value if driving a 12v resistor with 24v.
# Second hotend configuration
#temperature_control.hotend2.enable true # Whether to activate this ( "hotend" ) module at all.
#temperature_control.hotend2.thermistor_pin 0.25 # Pin for the thermistor to read
#temperature_control.hotend2.heater_pin 1.23 # Pin that controls the heater
#temperature_control.hotend2.thermistor EPCOS100K # See
##temperature_control.hotend2.beta 4066 # or set the beta value
#temperature_control.hotend2.set_m_code 104 # M-code to set the temperature for this module
#temperature_control.hotend2.set_and_wait_m_code 109 # M-code to set-and-wait for this module
#temperature_control.hotend2.designator T1 # Designator letter for this module
#temperature_control.hotend2.p_factor 13.7 # P ( proportional ) factor
#temperature_control.hotend2.i_factor 0.097 # I ( integral ) factor
#temperature_control.hotend2.d_factor 24 # D ( derivative ) factor
#temperature_control.hotend2.max_pwm 64 # Max pwm, 64 is a good value if driving a 12v resistor with 24v.
temperature_control.bed.enable true # Whether to activate this ( "hotend" ) module at all.
temperature_control.bed.thermistor_pin 0.24 # Pin for the thermistor to read
temperature_control.bed.heater_pin 2.4 #2.5 # Pin that controls the heater
temperature_control.bed.thermistor Honeywell100K # See
#temperature_control.bed.beta 3974 # Or set the beta value
temperature_control.bed.set_m_code 140 # M-code to set the temperature for this module
temperature_control.bed.set_and_wait_m_code 190 # M-code to set-and-wait for this module
temperature_control.bed.designator B # Designator letter for this module
# Bang-bang ( simplified ) control
temperature_control.bed.bang_bang true #false # Set to true to use bang bang control rather than PID
temperature_control.bed.hysteresis 2.0 # Set to the temperature in degrees C to use as hysteresis
## Switch modules
# Switch module for fan control
switch.fan.enable true # Enable this module
switch.fan.input_on_command M106 # Command that will turn this switch on
switch.fan.input_off_command M107 # Command that will turn this switch off
switch.fan.output_pin 1.22 #2.6 # Pin this module controls
switch.fan.output_type pwm # PWM output settable with S parameter in the input_on_comand
#switch.fan.max_pwm 255 # Set max pwm for the pin default is 255
#switch.misc.enable true # Enable this module
#switch.misc.input_on_command M42 # Command that will turn this switch on
#switch.misc.input_off_command M43 # Command that will turn this switch off
#switch.misc.output_pin 2.4 # Pin this module controls
#switch.misc.output_type digital # Digital means this is just an on or off pin
#switch.bltouch.enable true #
#switch.bltouch.output_pin 2.4 # sw pwm can use any digital pin
#switch.bltouch.input_on_command M280 #
#switch.bltouch.input_off_command M281 #
#switch.bltouch.output_type swpwm # sw pwm must be low frequency
#switch.bltouch.pwm_period_ms 20 # 50Hz
#switch.bltouch.startup_state false # start up in the stow state
#switch.bltouch.startup_value 7.43 # On boot it will go into stow mode, also set with the M281
#switch.bltouch.default_on_value 3.3 # if M280 is issued without S this is the value it will set it to
## Temperatureswitch
# Automatically toggle a switch at a specified temperature. Different ones of these may be defined to monitor different temperatures and switch different swithxes
# Useful to turn on a fan or water pump to cool the hotend
#temperatureswitch.hotend.enable true #
#temperatureswitch.hotend.designator T # first character of the temperature control designator to use as the temperature sensor to monitor
#temperatureswitch.hotend.switch misc # select which switch to use, matches the name of the defined switch
#temperatureswitch.hotend.threshold_temp 60.0 # temperature to turn on (if rising) or off the switch
#temperatureswitch.hotend.heatup_poll 15 # poll heatup at 15 sec intervals
#temperatureswitch.hotend.cooldown_poll 60 # poll cooldown at 60 sec intervals
## Endstops
endstops_enable true # The endstop module is enabled by default and can be disabled here
#corexy_homing false # Set to true if homing on a hbot or corexy
alpha_min_endstop 1.24^! # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
#alpha_max_endstop 1.25^! # Pin to read max endstop, uncomment this and comment the above if using max endstops
alpha_homing_direction home_to_min # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
alpha_min -420 # This gets loaded as the current position after homing when home_to_min is set
alpha_max 420 # This gets loaded as the current position after homing when home_to_max is set
#beta_min_endstop 1.26^! # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
beta_max_endstop 1.27^! # Pin to read max endstop, uncomment this and comment the above if using max endstops
beta_homing_direction home_to_max # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
beta_min -200 # This gets loaded as the current position after homing when home_to_min is set
beta_max 200 # This gets loaded as the current position after homing when home_to_max is set
gamma_min_endstop nc #1.28^! # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
gamma_max_endstop 1.29^! # Pin to read max endstop, uncomment this and comment the above if using max endstops
gamma_homing_direction home_to_max # DEFAULT home_to_min Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
gamma_min 0 # This gets loaded as the current position after homing when home_to_min is set
gamma_max 250 # This gets loaded as the current position after homing when home_to_max is set
alpha_max_travel 840 # DEFAULT 500 Max travel in mm for alpha/X axis when homing
beta_max_travel 400 # DEFAULT 500 Max travel in mm for beta/Y axis when homing
gamma_max_travel 250 # DEFAULT 500 Max travel in mm for gamma/Z axis when homing
# Optional enable limit switches, actions will stop if any enabled limit switch is triggered
#alpha_limit_enable true # Set to true to enable X min and max limit switches
#beta_limit_enable true # Set to true to enable Y min and max limit switches
#gamma_limit_enable true # Set to true to enable Z min and max limit switches
# Endstops home at their fast feedrate first, then once the endstop is found they home again at their slow feedrate for accuracy
alpha_fast_homing_rate_mm_s 200 #DEFAULT 50 # Alpha/X fast homing feedrate in mm/second
alpha_slow_homing_rate_mm_s 25 #DEFAULT 25 # Alpha/X slow homing feedrate in mm/second
beta_fast_homing_rate_mm_s 200 #DEFAULT 50 # Beta/Y fast homing feedrate in mm/second
beta_slow_homing_rate_mm_s 25 #DEFAULT 25 # Beta/Y slow homing feedrate in mm/second
gamma_fast_homing_rate_mm_s 50 #DEFAULT 4 # Gamma/Z fast homing feedrate in mm/second
gamma_slow_homing_rate_mm_s 10 #DEFAULT 2 # Gamma/Z slow homing feedrate in mm/second
alpha_homing_retract_mm 20 #5 # Distance to retract from the endstop after it is hit for alpha/X
beta_homing_retract_mm 20 #5 # Distance to retract from the endstop after it is hit for beta/Y
gamma_homing_retract_mm 10 #1 # Distance to retract from the endstop after it is hit for gamma/Z
# Optional order in which axis will home, default is they all home at the same time,
# If this is set it will force each axis to home one at a time in the specified order
#homing_order XYZ # X axis followed by Y then Z last
move_to_origin_after_home true #false # Move XY to 0,0 after homing
#endstop_debounce_count 100 # Uncomment if you get noise on your endstops, default is 100
endstop_debounce_ms 2 # Uncomment if you get noise on your endstops, default is 1 millisecond debounce
home_z_first true # Uncomment and set to true to home the Z first, otherwise Z homes after XY
# End of endstop config
# Delete the above endstop section and uncomment next line and copy and edit Snippets/abc-endstop.config file to enable endstops for ABC axis
#include abc-endstop.config
soft_endstop.enable true # Enable soft endstops
soft_endstop.x_min -421 # Minimum X position
soft_endstop.x_max 421 # Maximum X position
soft_endstop.y_min -201 # Minimum Y position
soft_endstop.y_max 201 # Maximum Y position
soft_endstop.z_min -1 # Minimum Z position
soft_endstop.z_max 251 # Maximum Z position
soft_endstop.halt false # Whether to issue a HALT state when hitting a soft endstop (if false, will just ignore commands that would exceed the limit)
## Z-probe
zprobe.enable true #false # Set to true to enable a zprobe
zprobe.probe_pin 1.28^ # Pin probe is attached to, if NC remove the !
zprobe.slow_feedrate 5 # Mm/sec probe feed rate
zprobe.debounce_ms 5 # Set if noisy
zprobe.fast_feedrate 100 #100 # Move feedrate mm/sec
zprobe.probe_height 5 # How much above bed to start probe
zprobe.return_feedrate 50 # feedrate after a probe, default 0 is double of slow_feedrate (mm/s)
zprobe.dwell_before_probing 0.2 # Dwell time in seconds before probing
# Levelling strategy
leveling-strategy.rectangular-grid.enable true # The strategy must be enabled in the config, as well as the zprobe module.
leveling-strategy.rectangular-grid.x_size 600 # size of bed in the X axis
leveling-strategy.rectangular-grid.y_size 350 # size of bed in the Y axis
leveling-strategy.rectangular-grid.grid_x_size 5 # The X size of the grid. For X size != Y size. Must be an odd number.
leveling-strategy.rectangular-grid.grid_y_size 5 # The Y size of the grid. For X size != Y size. Must be an odd number.
leveling-strategy.rectangular-grid.do_home true # home before level
leveling-strategy.rectangular-grid.probe_offsets 10,11,0 # Optional probe offsets from the nozzle or tool head
leveling-strategy.rectangular-grid.save true # If the saved grid is to be loaded on boot then this must be set to true
leveling-strategy.rectangular-grid.initial_height 10 # will move to Z10 before the first probe
mm_per_line_segment 1 # necessary for cartesians using rectangular-grid
leveling-strategy.rectangular-grid.human_readable true # Human readable formatting of probe table
#CHECK BEFORE USE
#leveling-strategy.rectangular-grid.dampening_start 0.5 # algorithm will be applied less and less from this height onwards
#leveling-strategy.rectangular-grid.height_limit 1 # algorithm will stop applying compensation from this point onwards
## Panel
# Please find your panel on the wiki and copy/paste the right configuration here
panel.enable true # Set to true to enable the panel code
# Example for reprap discount GLCD
# on glcd EXP1 is to left and EXP2 is to right, pin 1 is bottom left, pin 2 is top left etc.
# +5v is EXP1 pin 10, Gnd is EXP1 pin 9
panel.lcd reprap_discount_glcd #
panel.spi_channel 0 # SPI channel to use ; GLCD EXP1 Pins 3,5 (MOSI, SCLK)
panel.spi_cs_pin 0.16 # SPI chip select ; GLCD EXP1 Pin 4
panel.encoder_a_pin 3.25!^ # Encoder pin ; GLCD EXP2 Pin 3
panel.encoder_b_pin 3.26!^ # Encoder pin ; GLCD EXP2 Pin 5
panel.click_button_pin 1.30!^ # Click button ; GLCD EXP1 Pin 2
panel.buzz_pin 1.31 # Pin for buzzer ; GLCD EXP1 Pin 1
panel.back_button_pin 2.11!^ # Back button ; GLCD EXP2 Pin 8
panel.encoder_resolution 4 # number of clicks to move 1 item
# setup for external sd card on the GLCD which uses the onboard sdcard SPI port
panel.external_sd true # set to true if there is an extrernal sdcard on the panel
panel.external_sd.spi_channel 1 # set spi channel the sdcard is on
panel.external_sd.spi_cs_pin 0.28 # set spi chip select for the sdcard (or any spare pin)
panel.external_sd.sdcd_pin 0.27!^ # sd detect signal (set to nc if no sdcard detect) (or any spare pin)
panel.menu_offset 0 # Some panels will need 1 here
panel.alpha_jog_feedrate 6000 # X jogging feedrate in mm/min
panel.beta_jog_feedrate 6000 # Y jogging feedrate in mm/min
panel.gamma_jog_feedrate 200 # Z jogging feedrate in mm/min
panel.hotend_temperature 185 # Temp to set hotend when preheat is selected
panel.bed_temperature 60 # Temp to set bed when preheat is selected
## Custom menus : Example of a custom menu entry, which will show up in the Custom entry.
# NOTE _ gets converted to space in the menu and commands, | is used to separate multiple commands
custom_menu.power_on.enable true #
custom_menu.power_on.name Power_on #
custom_menu.power_on.command M80 #
custom_menu.power_off.enable true #
custom_menu.power_off.name Power_off #
custom_menu.power_off.command M81 #
## Network settings
network.enable true # Enable the ethernet network services
network.webserver.enable true # Enable the webserver
network.telnet.enable true # Enable the telnet server
#network.ip_address auto # Use dhcp to get ip address
# Uncomment the 3 below to manually setup ip address
network.ip_address xxx.xxx.x.xxx # The IP address
network.ip_mask 255.255.255.0 # The ip mask
network.ip_gateway xxx.xxx.x.x # The gateway address
#network.mac_override xx.xx.xx.xx.xx.xx # Override the mac address, only do this if you have a conflict
## System configuration
# Serial communications configuration ( baud rate defaults to 9600 if undefined )
# For communication over the UART port, *not* the USB/Serial port
uart0.baud_rate 115200 # Baud rate for the default hardware ( UART ) serial port
second_usb_serial_enable false # This enables a second USB serial port
#leds_disable true # Disable using leds after config loaded
#play_led_disable true # Disable the play led
# Kill button maybe assigned to a different pin, set to the onboard pin by default
kill_button_enable true # Set to true to enable a kill button
kill_button_pin 2.12 # Kill button pin. default is same as pause button 2.12 (2.11 is another good choice)
#msd_disable false # Disable the MSD (USB SDCARD), see
#dfu_enable false # For linux developers, set to true to enable DFU
# Only needed on a smoothieboard
currentcontrol_module_enable true # Control stepper motor current via the configuration file
##POWER SUPPLY SWITCHING
switch.psu.enable true # turn atx on/off
switch.psu.input_on_command M80 #
switch.psu.input_off_command M81 #
switch.psu.output_pin 0.26o! # open drain, inverted
switch.psu.output_type digital # on/off only
switch.psu.failsafe_set_to 1 # so the ATX turns off on a system crash
#switch.psu.ignore_on_halt true # so the ATX does not turn off on a HALT condition (like limit trigger)
# However leave commented or set to false if you want the ATX to turn off for an over heat fault condition
