Auto bed leveling with an Inductive Probe

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Justin Shelton

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Mar 4, 2016, 9:36:35 PM3/4/16

to Smoothieware Support

I know that inductive "probes" have had several different topics throughout this forum, however I haven't been able to find any topics that answer my problem :/

I have successfully wired my Inductive sensor to my printer before I got my smoothie board. I actually got 4 point auto bed leveling working quite well. But now that I've switched to Smoothie I can't get it to work. I will add my config file below.

Basically I approached it the same way as I did with my RAMPS board by placing the Inductive sensor in the Z-min pin for my board. I didn't actually change any values relating to how high the sensor is versus the actual trigger point of my sensor. (It's approximately 3-4 mm though).

When I type in G29, I get the message "No strategy found to handle G29". Also, I know the sensor works because I can home the printer on the z-axis fine. Also, after I home all axis, if I send G29 it just says "SENDING:G29". Thank you if you've read this far!

# NOTE Lines must not exceed 132 characters

# Robot module configurations : general handling of movement G-codes and slicing into moves

default_feed_rate 4000 # Default rate ( mm/minute ) for G1/G2/G3 moves

default_seek_rate 4000 # Default rate ( mm/minute ) for G0 moves

mm_per_arc_segment 0.5 # Arcs are cut into segments ( lines ), this is the length for

# these segments. Smaller values mean more resolution,

# higher values mean faster computation

#mm_per_line_segment 5 # Lines can be cut into segments ( not usefull with cartesian

# coordinates robots ).

# Arm solution configuration : Cartesian robot. Translates mm positions into stepper positions

alpha_steps_per_mm 80 # Steps per mm for alpha stepper

beta_steps_per_mm 80 # Steps per mm for beta stepper

gamma_steps_per_mm 1600 # Steps per mm for gamma stepper

# Planner module configuration : Look-ahead and acceleration configuration

planner_queue_size 32 # DO NOT CHANGE THIS UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING

acceleration 3000 # Acceleration in mm/second/second.

#z_acceleration 500 # Acceleration for Z only moves in mm/s^2, 0 uses acceleration which is the default. DO NOT SET ON A DELTA

acceleration_ticks_per_second 1000 # Number of times per second the speed is updated

junction_deviation 0.05 # Similar to the old "max_jerk", in millimeters,

# see https://github.com/grbl/grbl/blob/master/planner.c

# and https://github.com/grbl/grbl/wiki/Configuring-Grbl-v0.8

# Lower values mean being more careful, higher values means being

# faster and have more jerk

#z_junction_deviation 0.0 # for Z only moves, -1 uses junction_deviation, zero disables junction_deviation on z moves DO NOT SET ON A DELTA

#minimum_planner_speed 0.0 # sets the minimum planner speed in mm/sec

# Stepper module configuration

microseconds_per_step_pulse 1 # Duration of step pulses to stepper drivers, in microseconds

base_stepping_frequency 100000 # Base frequency for stepping, higher gives smoother movement

# Cartesian axis speed limits

x_axis_max_speed 30000 # mm/min

y_axis_max_speed 30000 # mm/min

z_axis_max_speed 300 # mm/min

# Stepper module pins ( ports, and pin numbers, appending "!" to the number will invert a pin )

alpha_step_pin 2.0 # Pin for alpha stepper step signal

alpha_dir_pin 0.5 # Pin for alpha stepper direction

alpha_en_pin 0.4 # Pin for alpha enable pin

alpha_current 0.4 # X stepper motor current

alpha_max_rate 30000.0 # mm/min

beta_step_pin 2.1 # Pin for beta stepper step signal

beta_dir_pin 0.11 # Pin for beta stepper direction

beta_en_pin 0.10 # Pin for beta enable

beta_current 1.4 # Y stepper motor current

beta_max_rate 30000.0 # mm/min

gamma_step_pin 2.2 # Pin for gamma stepper step signal

gamma_dir_pin 0.20 # Pin for gamma stepper direction

gamma_en_pin 0.19 # Pin for gamma enable

gamma_current 0.8 # Z stepper motor current

gamma_max_rate 300.0 # mm/min

# Serial communications configuration ( baud rate default to 9600 if undefined )

uart0.baud_rate 115200 # Baud rate for the default hardware serial port

second_usb_serial_enable false # This enables a second usb serial port (to have both pronterface

# and a terminal connected)

#leds_disable true # disable using leds after config loaded

#play_led_disable true # disable the play led

pause_button_enable true # Pause button enable

#pause_button_pin 2.12 # pause button pin. default is P2.12

#kill_button_enable false # 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) when set to true (needs special binary)

#dfu_enable false # for linux developers, set to true to enable DFU

# 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 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 500 # Acceleration for the stepper motor, as of 0.6, arbitrary ratio

extruder.hotend.max_speed 50 # mm/s

extruder.hotend.step_pin 2.3 # Pin for extruder step signal

extruder.hotend.dir_pin 0.22 # Pin for extruder dir signal

extruder.hotend.en_pin 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 # zlift on retract in mm, 0 disables

#extruder.hotend.retract_zlift_feedrate 6000 # zlift feedrate in mm/min (Note mm/min NOT mm/sec)

delta_current 0.4 # First extruder stepper motor current

# Second extruder module configuration

#extruder.hotend2.enable false # 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

#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 1.5 # Second extruder stepper motor current

# Laser module configuration

laser_module_enable false # Whether to activate the laser module at all. All configuration is

# ignored if false.

#laser_module_pin 2.5 # this pin will be PWMed to control the laser. Only P2.0 - P2.5, P1.18, P1.20, P1.21, P1.23, P1.24, P1.26, P3.25, P3.26

# can be used since laser requires hardware PWM

#laser_module_max_power 0.8 # this is the maximum duty cycle that will be applied to the laser

#laser_module_tickle_power 0.0 # this duty cycle will be used for travel moves to keep the laser

# active without actually burning

#laser_module_pwm_period 20 # this sets the pwm frequency as the period in microseconds

# Hotend temperature control configuration

temperature_control.hotend.enable true # Whether to activate this ( "hotend" ) module at all.

# All configuration is ignored if false.

temperature_control.hotend.thermistor_pin 0.23 # Pin for the thermistor to read

temperature_control.hotend.heater_pin 2.7 # Pin that controls the heater, set to nc if a readonly thermistor is being defined

temperature_control.hotend.thermistor EPCOS100K # see http://smoothieware.org/temperaturecontrol#toc5

#temperature_control.hotend.beta 4066 # or set the beta value

temperature_control.hotend.set_m_code 104 #

temperature_control.hotend.set_and_wait_m_code 109 #

temperature_control.hotend.designator T #

#temperature_control.hotend.max_temp 250 # Set maximum temperature

#temperature_control.hotend.min_temp 0 # Set minimum temperature - Will prevent heating below if set

#temperature_control.hotend.p_factor 13.7 # permanently set the PID values after an auto pid

#temperature_control.hotend.i_factor 0.097 #

#temperature_control.hotend.d_factor 24 #

#temperature_control.hotend.max_pwm 64 # max pwm, 64 is a good value if driving a 12v resistor with 24v.

# Hotend2 temperature control configuration

#temperature_control.hotend2.enable true # Whether to activate this ( "hotend" ) module at all.

# All configuration is ignored if false.

#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 http://smoothieware.org/temperaturecontrol#toc5

##temperature_control.hotend2.beta 4066 # or set the beta value

#temperature_control.hotend2.set_m_code 884 #

#temperature_control.hotend2.set_and_wait_m_code 889 #

#temperature_control.hotend2.designator T1 #

#temperature_control.hotend2.p_factor 13.7 # permanently set the PID values after an auto pid

#temperature_control.hotend2.i_factor 0.097 #

#temperature_control.hotend2.d_factor 24 #

#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 #

temperature_control.bed.thermistor_pin 0.24 #

temperature_control.bed.heater_pin 2.5 #

temperature_control.bed.thermistor Honeywell100K # see http://smoothieware.org/temperaturecontrol#toc5

#temperature_control.bed.beta 3974 # or set the beta value

temperature_control.bed.set_m_code 140 #

temperature_control.bed.set_and_wait_m_code 190 #

temperature_control.bed.designator B #

#temperature_control.bed.bang_bang 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

# when using bang bang

# Switch module for fan control

switch.fan.enable true #

switch.fan.input_on_command M106 #

switch.fan.input_off_command M107 #

switch.fan.output_pin 2.6 #

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 #

#switch.misc.input_on_command M42 #

#switch.misc.input_off_command M43 #

#switch.misc.output_pin 2.4 #

#switch.misc.output_type digital # just an on or off pin

# 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

# Switch module for spindle control

#switch.spindle.enable false #

# 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 hbit or corexy

alpha_min_endstop 1.24^! # add a ! to invert if endstop is NO connected to ground

alpha_max_endstop nc # NOTE set to nc if this is not installed

alpha_homing_direction home_to_min # or set to home_to_max and set alpha_max

alpha_min 0 # this gets loaded after homing when home_to_min is set

alpha_max 200 # this gets loaded after homing when home_to_max is set

beta_min_endstop 1.26^! #

beta_max_endstop nc #

beta_homing_direction home_to_min #

beta_min 0 #

beta_max 200 #

gamma_min_endstop nc #

gamma_max_endstop nc #

gamma_homing_direction home_to_min #

gamma_min 0 #

gamma_max 200 #

# 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

# optional enable limit switches, actions will stop if any enabled limit switch is triggered

#alpha_limit_enable false # set to true to enable X min and max limit switches

#beta_limit_enable false # set to true to enable Y min and max limit switches

#gamma_limit_enable false # set to true to enable Z min and max limit switches

alpha_fast_homing_rate_mm_s 50 # feedrates in mm/second

beta_fast_homing_rate_mm_s 50 # "

gamma_fast_homing_rate_mm_s 4 # "

alpha_slow_homing_rate_mm_s 25 # "

beta_slow_homing_rate_mm_s 25 # "

gamma_slow_homing_rate_mm_s 2 # "

alpha_homing_retract_mm 5 # distance in mm

beta_homing_retract_mm 5 # "

gamma_homing_retract_mm 1 # "

#endstop_debounce_count 100 # uncomment if you get noise on your endstops, default is 100

# optional Z probe

zprobe.enable true # 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_count 100 # set if noisy

zprobe.fast_feedrate 100 # move feedrate mm/sec

zprobe.probe_height 5 # how much above bed to start probe

#gamma_min_endstop 1.28^! # normally 1.28. Change to nc to prevent conflict,

# associated with zprobe the leveling strategy to use

#leveling-strategy.three-point-leveling.enable true # a leveling strategy that probes three points to define a plane and keeps the Z parallel to that plane

#leveling-strategy.three-point-leveling.point1 100.0,0.0 # the first probe point (x,y) optional may be defined with M557

#leveling-strategy.three-point-leveling.point2 200.0,200.0 # the second probe point (x,y)

#leveling-strategy.three-point-leveling.point3 0.0,200.0 # the third probe point (x,y)

#leveling-strategy.three-point-leveling.home_first true # home the XY axis before probing

#leveling-strategy.three-point-leveling.tolerance 0.03 # the probe tolerance in mm, anything less that this will be ignored, default is 0.03mm

#leveling-strategy.three-point-leveling.probe_offsets 0,0,0 # the probe offsets from nozzle, must be x,y,z, default is no offset

#leveling-strategy.three-point-leveling.save_plane false # set to true to allow the bed plane to be saved with M500 default is false

# Panel

panel.enable false # set to true to enable the panel code

panel.lcd smoothiepanel # set type of panel

panel.encoder_a_pin 3.25!^ # encoder pin

panel.encoder_b_pin 3.26!^ # encoder pin

# 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

# pins used with other panels

#panel.up_button_pin 0.1! # up button if used

#panel.down_button_pin 0.0! # down button if used

#panel.click_button_pin 0.18! # click button if used

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

# 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 #

# Only needed on a smoothieboard

currentcontrol_module_enable true #

return_error_on_unhandled_gcode false #

# network settings

network.enable false # 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 192.168.3.222 # the IP address

#network.ip_mask 255.255.255.0 # the ip mask

#network.ip_gateway 192.168.3.1 # the gateway address

#network.mac_override xx.xx.xx.xx.xx.xx # override the mac address, only do this if you have a conflict

# Drills module

# Implement the Canned Drilling Cycles

# G80-83, G98, G99 in absolute mode only

# Incremental mode not implemented (L)

drillingcycles.enable false # enable module, default false

drillingcycles.dwell_units S # dwell units [S = seconds, P = millis], default: S

wolfmanjm

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Mar 5, 2016, 12:40:15 AM3/5/16

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You do not have any levelling strategies enabled so of course it can't do anyhting :)

I suggest you read this... http://smoothieware.org/zprobe

Also G29 doe snot do what you think it does, we use different G codes than Marlin.

Message has been deleted

Justin Shelton

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Mar 5, 2016, 11:38:00 AM3/5/16

to Smoothieware Support

Sorry, but this guide isn't helping. It says use G29, but again I get the same error message. My three-point-leveling.enable is set to true so I do have a strategy...also, I actually only see the one leveling strategy associated with three point leveling. How can you say I don't have a leveling strategy enabled?

Arthur Wolf

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Mar 5, 2016, 11:43:35 AM3/5/16

to Smoothieware Support

I think what jim meant is that this line :

#leveling-strategy.three-point-leveling.enable true # a leveling strategy that probes three points to define a plane and keeps the Z parallel to that plane

is commented ( # at the beginning of the line, see http://smoothieware.org/configuring-smoothie ).

So Smoothie will ignore the line, even if it's set to true, and you end up without a levelling strategy.

On Sat, Mar 5, 2016 at 5:37 PM, Justin Shelton <justinhs...@gmail.com> wrote:

Sorry, but this guide isn't helping. It says use G29, but again I get the same error message. My three-point-leveling.enable is set to true so I do have a strategy...also, I actually only see the one leveling strategy associated with three point leveling. How can you say I don't have a leveling strategy enabled?

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Courage et bonne humeur.

Justin Shelton

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Mar 5, 2016, 12:09:51 PM3/5/16

to Smoothieware Support

Oh, thank you for that.

But now I'm getting another weird issue. When I send G29 I get "SENDING:G29" and nothing happens.

Also, with all axis homed I get min_x:1 min_y:1 min_z:1 Probe: 1

Here is the config again...

gamma_min_endstop 1.28^! #

gamma_max_endstop nc #

gamma_homing_direction home_to_min #

gamma_min 0 #

gamma_max 200 #

# 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

# optional enable limit switches, actions will stop if any enabled limit switch is triggered

#alpha_limit_enable false # set to true to enable X min and max limit switches

#beta_limit_enable false # set to true to enable Y min and max limit switches

#gamma_limit_enable false # set to true to enable Z min and max limit switches

alpha_fast_homing_rate_mm_s 50 # feedrates in mm/second

beta_fast_homing_rate_mm_s 50 # "

gamma_fast_homing_rate_mm_s 4 # "

alpha_slow_homing_rate_mm_s 25 # "

beta_slow_homing_rate_mm_s 25 # "

gamma_slow_homing_rate_mm_s 2 # "

alpha_homing_retract_mm 5 # distance in mm

beta_homing_retract_mm 5 # "

gamma_homing_retract_mm 1 # "

#endstop_debounce_count 100 # uncomment if you get noise on your endstops, default is 100

# optional Z probe

zprobe.enable true # set to true to enable a zprobe

zprobe.probe_pin 1.28!^! # pin probe is attached to if NC remove the !

zprobe.slow_feedrate 10 # mm/sec probe feed rate

#zprobe.debounce_count 100 # set if noisy

zprobe.fast_feedrate 100 # move feedrate mm/sec

zprobe.probe_height 5 # how much above bed to start probe

#gamma_min_endstop nc # normally 1.28. Change to nc to prevent conflict,

# associated with zprobe the leveling strategy to use

leveling-strategy.three-point-leveling.enable true # a leveling strategy that probes three points to define a plane and keeps the Z parallel to that plane

leveling-strategy.three-point-leveling.point1 100.0,0.0 # the first probe point (x,y) optional may be defined with M557

leveling-strategy.three-point-leveling.point2 200.0,200.0 # the second probe point (x,y)

leveling-strategy.three-point-leveling.point3 0.0,200.0 # the third probe point (x,y)

leveling-strategy.three-point-leveling.home_first true # home the XY axis before probing

leveling-strategy.three-point-leveling.tolerance 0.03 # the probe tolerance in mm, anything less that this will be ignored, default is 0.03mm

leveling-strategy.three-point-leveling.probe_offsets 0,0,0 # the probe offsets from nozzle, must be x,y,z, default is no offset

Larry Ciscon

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Mar 5, 2016, 4:05:51 PM3/5/16

to Smoothieware Support

Justin,

I think you should be using G32 not G29. Even though the Smoothieboard zprobe page mentions G29 I don't think G29 is supported. If you read farther down the page it describes the G32 function.

Justin Shelton

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Mar 5, 2016, 9:42:25 PM3/5/16

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Ah, yes I saw the G32. I tried it but I didn't realize that the z-probe couldn't be triggered before issuing the command.

Also, no I have strange issue. When command the z-axis to go up and down normally, it does so fine. Steppers sound normal. However, after issuing G32, it moves to the first XY position but when it tries to move down to probe the first position, the steppers freeze up and make a higher pitched noise.

Arthur Wolf

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Mar 6, 2016, 4:40:57 AM3/6/16

to Smoothieware Support

On Sun, Mar 6, 2016 at 3:42 AM, Justin Shelton <justinhs...@gmail.com> wrote:

Ah, yes I saw the G32. I tried it but I didn't realize that the z-probe couldn't be triggered before issuing the command.

Also, no I have strange issue. When command the z-axis to go up and down normally, it does so fine. Steppers sound normal. However, after issuing G32, it moves to the first XY position but when it tries to move down to probe the first position, the steppers freeze up and make a higher pitched noise.

That means you need to adjust your probing speeds to be within the machine's capacities ( note they are in mm/s ).

Try manually moving your head as fast as possible in the Z direction, note the fastest you can go, and set your Z probing speeds to about half that ( slow_feedrate and return_feedrate ) . Then try probing again.

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Justin Shelton

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Mar 6, 2016, 5:17:42 PM3/6/16

to Smoothieware Support

Thank you! The probing issue is resolved so now onto tests prints!

felix.h...@gmail.com

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Jan 12, 2018, 12:08:23 PM1/12/18

to Smoothieware Support

I'm so so sorry to reopen this thread again, but I'm doing quite a bit of research on the topic and I couldn't help myself.

As fot the last snippet of code Justin posted, I see that he uses the probe as both the Z-endstop and probe itself, assigning both of them at pin 1.28

I've read in more than one thread that this should not be done and you should have both a Z-Endstop and a probe, set in different pins. One example of thread is this one:

https://groups.google.com/forum/#!topic/smoothieware-support/kcgwLaFGx_M

I've seen another one which also deals with BLTouch as probe, but the argument was about the same.

Now, I have two printers running Marling and both of them have a probe which also is used as Z-Endstop. They both work really well and I would like my new Smoothie powered printer behave about the same.

My question is... what is it, can a probe be used as a Z-Endstop like Justin's or can it not? Is it maybe an issue particular to the BLTouch? As far as I've been seeing this is an issue many people is confused about, including myself.

Thanks in advance for your attention,

wolfmanjm

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Jan 12, 2018, 5:44:36 PM1/12/18

to Smoothieware Support

It may or may not work, and if it does work it is not guaranteed to continue working as firmware gets updated. Use at your own risk.

Overall assigning the same pin to two different functions is NOT supported, even though if you are lucky it may work at the moment.

Nikita BOGUSLAVSKIY

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Feb 22, 2019, 7:46:24 AM2/22/19

to Smoothieware Support

Hello,

Can you help me too, please?

I am having troubles with implementing rectangular grid compensation. I have already updated to the latest firmware and config, but it does not seem to be working...
I use inductive sensor for the Z-probe. With 3-point leveling strategy it works fine (i use G32), but with grid it even does not start.

# Smoothieboard configuration file, see http://smoothieware.org/configuring-smoothie

# 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 4000 # Default speed (mm/minute) for G1/G2/G3 moves

default_seek_rate 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

# See http://smoothieware.org/stepper-motors

alpha_steps_per_mm 32.05 # Steps per mm for alpha ( X ) stepper

beta_steps_per_mm 32.12 # Steps per mm for beta ( Y ) stepper

gamma_steps_per_mm 400 # Steps per mm for gamma ( Z ) stepper

# Planner module configuration : Look-ahead and acceleration configuration

# See http://smoothieware.org/motion-control

acceleration 1000 # Acceleration in mm/second/second.

#z_acceleration 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 0.02 # See http://smoothieware.org/motion-control#junction-deviation

#z_junction_deviation 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 30000 # Maximum speed in mm/min

y_axis_max_speed 30000 # Maximum speed in mm/min

z_axis_max_speed 9000 # Maximum speed in mm/min

# Stepper module configuration

# Pins are defined as ports, and pin numbers, appending "!" to the number will invert a pin

# See http://smoothieware.org/pin-configuration and http://smoothieware.org/pinout

alpha_step_pin 0.4 # Pin for alpha stepper step signal

alpha_dir_pin 2.0 # Pin for alpha stepper direction

alpha_en_pin 0.5 # Pin for alpha enable pin

alpha_current 0.5 # X stepper motor current

alpha_max_rate 30000.0 # mm/min

beta_step_pin 0.10 # Pin for beta stepper step signal

beta_dir_pin 2.1 # Pin for beta stepper direction

beta_en_pin 0.11 # Pin for beta enable

beta_current 0.5 # Y stepper motor current

beta_max_rate 30000.0 # mm/min

gamma_step_pin 0.21 # Pin for gamma stepper step signal

gamma_dir_pin 2.3! # Pin for gamma stepper direction

gamma_en_pin 0.22 # Pin for gamma enable

gamma_current 0.5 # stepper motor current

gamma_max_rate 9000.0 # mm/min

## Laser module configuration

# See http://smoothieware.org/laser

laser_module_enable false # Whether to activate the laser module at all

laser_module_pwm_pin 2.5 # This pin will be PWMed to control the laser.

# Only pins 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 3.25 and 3.26

# can be used since laser requires hardware PWM, see http://smoothieware.org/pinout

#laser_module_ttl_pin 1.30 # This pin turns on when the laser turns on, and off when the laser turns off.

#laser_module_maximum_power 1.0 # This is the maximum duty cycle that will be applied to the laser

#laser_module_minimum_power 0.0 # This is a value just below the minimum duty cycle that keeps the laser

# active without actually burning.

#laser_module_default_power 0.8 # This is the default laser power that will be used for cuts if a power has not been specified. The value is a scale between

# the maximum and minimum power levels specified above

#laser_module_pwm_period 20 # This sets the pwm frequency as the period in microseconds

## Temperature control configuration

# See http://smoothieware.org/temperaturecontrol

## Switch modules

# See http://smoothieware.org/switch

after_suspend_gcode G91_G0Z20

#Move to zero Button

switch.zero.enable true

switch.zero.input_pin 0.23^

switch.zero.output_on_command G91G0Z15G90G0Y0X0G0Z0

switch.zero.input_pin_behavior momentary

#Set origin Button

switch.origin.enable true

switch.origin.input_pin 0.24^

switch.origin.output_on_command G92X0Y0Z0

switch.origin.input_pin_behavior momentary

#Homing Button

switch.homing.enable true

switch.homing.input_pin 0.25^

switch.homing.output_on_command G91G0Z15G28YXZ

switch.homing.input_pin_behavior momentary

#Pause-Resume Button

switch.pause.enable true #

switch.pause.output_on_command M600 #

switch.pause.output_off_command M601 #

switch.pause.input_pin 0.26^ #

switch.pause.input_type digital #

switch.pause.input_pin_behavior toggle

#Disable stepper Button

switch.stepper.enable true #

switch.stepper.output_on_command M84 #

switch.stepper.input_pin 2.11^ #

switch.stepper.input_type digital #

switch.stepper.input_pin_behavior momentary

#Vacuum Button

switch.vacuumb.enable true #

switch.vacuumb.output_on_command M106 #

switch.vacuumb.output_off_command M107 #

switch.vacuumb.input_pin 4.28^ #

switch.vacuumb.input_type digital #

switch.vacuumb.input_pin_behavior momentory

#Vacuum

switch.vacuum.enable true #

switch.vacuum.input_on_command M106 #

switch.vacuum.input_off_command M107 #

switch.vacuum.output_pin 1.22 #

switch.vacuum.output_type digital #

#Test Led Button

#switch.led.enable true #

switch.led.input_pin 0.3^ #

switch.led.input_type digital #

switch.led.input_pin_behavior momentory

switch.led.output_on_command M1001 #

switch.led.output_off_command M2001 #

#switch.led1.enable true #

switch.led1.input_on_command M1001 #

switch.led1.input_off_command M2001 #

switch.led1.output_pin 0.26v #

switch.led1.output_type digital #

switch.led1.output_pin_behavior momentory #

## Endstops

# See http://smoothieware.org/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 0 # This gets loaded as the current position after homing when home_to_min is set

alpha_max 600 # 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_min # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop

beta_min 0 # This gets loaded as the current position after homing when home_to_min is set

beta_max 600 # This gets loaded as the current position after homing when home_to_max is set

gamma_min_endstop 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_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 130 # This gets loaded as the current position after homing when home_to_max is set

alpha_max_travel 600 # Max travel in mm for alpha/X axis when homing

beta_max_travel 600 # Max travel in mm for beta/Y axis when homing

gamma_max_travel 130 # 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 false # Set to true to enable X min and max limit switches

#beta_limit_enable false # Set to true to enable Y min and max limit switches

#gamma_limit_enable false # 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 50 # Alpha/X fast homing feedrate in mm/second

alpha_slow_homing_rate_mm_s 25 # Alpha/X slow homing feedrate in mm/second

beta_fast_homing_rate_mm_s 50 # Beta/Y fast homing feedrate in mm/second

beta_slow_homing_rate_mm_s 25 # Beta/Y slow homing feedrate in mm/second

gamma_fast_homing_rate_mm_s 50 # Gamma/Z fast homing feedrate in mm/second

gamma_slow_homing_rate_mm_s 25 # Gamma/Z slow homing feedrate in mm/second

alpha_homing_retract_mm 5 # Distance to retract from the endstop after it is hit for alpha/X

beta_homing_retract_mm 5 # Distance to retract from the endstop after it is hit for beta/Y

gamma_homing_retract_mm 1 # Distance to retract from the endstop after it is hit for gamma/Z

# Optional enable limit switches, actions will stop if any enabled limit switch is triggered (all are set for delta)

#alpha_limit_enable false # Set to true to enable X min and max limit switches

#beta_limit_enable false # Set to true to enable Y min and max limit switches

#gamma_limit_enable false # Set to true to enable Z min and max limit switches

# 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 YXZ # X axis followed by Y then Z last

move_to_origin_after_home true # 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 1 # 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

## Z-probe

# See http://smoothieware.org/zprobe

zprobe.enable true # Set to true to enable a zprobe

zprobe.probe_pin 1.29! # Pin probe is attached to, if NC remove the !

zprobe.slow_feedrate 20 # Mm/sec probe feed rate

#zprobe.debounce_ms 1 # Set if noisy

zprobe.fast_feedrate 100 # Move feedrate mm/sec

zprobe.probe_height 10 # How much above bed to start probe

#gamma_min_endstop nc # Normally 1.28. Change to nc to prevent conflict,

# Levelling strategy

# Example for 3-point levelling strategy, see wiki documentation for other strategies