Dont know where to turn

Board : New model (not mini) Cohesion3D ( Good doc. but not much support)
Firmware: Smoothy
Software: Lightburn
Operating system: Windows 11 Pro
Laser: MLE 40 (full spectrum)

Back ground is… servos goin right direction. And homes good. switches are micro and are N.C. and working as should. Computer and controller board boots up fast. All lights on controller lit as designed. Bed size is set and origen is set for bottom left. Can fire laser from on top of panel and reosastat adjusts current ok. Have used original sd card (no modifications) And a new formatted with the config file set for larger bed config (14 X 9.5) SO the problem I have is and going over wiring and config settings tried everything I know so wonder what is affecting this situation, …At laser in home position I put a box image on work area and hit start and it quickly goes to right and wants to go through the right rail. (of course I shut it down) And if Im moving the axis in manual and kit the Z direction on the screen it lock up and have to restart the laser to get any manual movement. This machine worked flawless with old board before I made change. Just wanted to use LightBurn which it didn’t support. Sorry so long and thanks for any help, Going on a week now.

Can you provide the following:

  1. Where is the location of home?
  2. Can you run this command after homing and return output:
  1. If you use jogging controls and set distance to 10mm. Does the machine move 10mm at a time and do all jogging controls work as you expect?
  2. Please provide a screenshot of Edit->Device Settings
  3. Please provide a full screenshot of LightBurn with a design loaded and ready to burn. Please have Laser window in view when you do this.
  1. Home is top left

  2. Waiting for connection…
    Waiting for connection…

  3. If set to one inch it goes exactally one inch. I measured it.

Do your jogging controls work in the direction that you expect? Up moves up, down moves down, right moves right, left moves left?

To me it seems the fundamental problem that you’re having is that your machine is registering top-left as 0,0. Have you configured the bed size in config.txt?

However, I’m noticing a potential problem with your Device Settings as well.

You’re showing a work area of 241.3 x 355.6 inches which would make it a very large laser. Can you confirm the actual dimensions of your laser in millimeters?

Can you upload the config.txt file for your system here?

This is orginial sd card never changed anything

The size is in mm but I see it is set for inches. I went to smoothy set up and changed it to 14 inches wide by 9.5 high and when I go to device settings it says the same. When I entered it before I thought it was asking for mm

#Cohesion3D LaserBoard v0.2

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 24000 # Default rate ( mm/minute ) for G0 moves
mm_per_arc_segment 0.0 # Fixed length for line segments that divide arcs 0 to disable
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
#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 157.575 # Steps per mm for alpha stepper
beta_steps_per_mm 157.575 # Steps per mm for beta stepper
gamma_steps_per_mm 157.575 # Steps per mm for gamma stepper

Planner module configuration : Look-ahead and acceleration configuration

acceleration 2500 # 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 0.05 # Similar to the old “max_jerk”, in millimeters,
# see
# and Configuring Grbl v0.8 · grbl/grbl Wiki · GitHub
# 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 2 # Duration of step pulses to stepper drivers, in microseconds
base_stepping_frequency 100000 # Base frequency for stepping

Cartesian axis speed limits

x_axis_max_speed 24000 # mm/min
y_axis_max_speed 24000 # mm/min
z_axis_max_speed 24000 # 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 24000.0 # mm/min
alpha_acceleration 2500 # mm/sec²

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 0.6 # Y stepper motor current
beta_max_rate 24000.0 # mm/min
beta_acceleration 2500 # mm/sec²

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 0.6 # Z stepper motor current
gamma_max_rate 24000.0 # mm/min
gamma_acceleration 2500 # mm/sec²

A axis

delta_steps_per_mm 157.5 # may be steps per degree for example
delta_step_pin 2.3 # Pin for delta stepper step signal
delta_dir_pin 0.22 # Pin for delta stepper direction
delta_en_pin 0.21 # Pin for delta enable
delta_current 0.6 # Z stepper motor current
delta_max_rate 12000 # mm/min
delta_acceleration 1000 # mm/sec²

B axis

epsilon_steps_per_mm 100 # may be steps per degree for example
epsilon_step_pin xx # Pin for delta stepper step signal
epsilon_dir_pin xx # Pin for delta stepper direction
epsilon_en_pin xx # Pin for delta enable
epsilon_current 1.5 # Z stepper motor current
epsilon_max_rate 300.0 # mm/min
epsilon_acceleration 500.0 # mm/sec²

C axis

zeta_steps_per_mm 100 # may be steps per degree for example
zeta_step_pin xx # Pin for delta stepper step signal
zeta_dir_pin xx # Pin for delta stepper direction
zeta_en_pin xx # Pin for delta enable
zeta_current 1.5 # Z stepper motor current
zeta_max_rate 300.0 # mm/min
zeta_acceleration 500.0 # mm/sec²

System configuration

Serial communications configuration ( baud rate defaults 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

Kill button (used to be called pause) 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) when set to true (needs special binary)
#dfu_enable false # for linux developers, set to true to enable DFU
#watchdog_timeout 10 # watchdog timeout in seconds, default is 10, set to 0 to disable the watchdog

Only needed on a smoothieboard

currentcontrol_module_enable true #

Extruder module configuration

extruder.hotend.enable false # Whether to activate the extruder module at all. All configuration is ignored if false
extruder.hotend.steps_per_mm 157.575 # Steps per mm for extruder stepper
extruder.hotend.default_feed_rate 60000 # Default rate ( mm/minute ) for moves where only the extruder moves
extruder.hotend.acceleration 3000 # Acceleration for the stepper motor mm/sec?
extruder.hotend.max_speed 1000 # 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 1.8 # 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
#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 true # 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_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 200 # this sets the pwm frequency as the period in microseconds

switch.laserfire.enable false
switch.laserfire.output_pin 2.6
switch.laserfire.output_type digital
switch.laserfire.input_on_command M3
switch.laserfire.input_off_command M5

Temperature control configuration

First hotend configuration

temperature_control.hotend.enable false # 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
#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 300 # 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 # max is 2040 seconds, how long it can take to heat up
#temperature_control.hotend.runaway_cooling_timeout 900 # max is 2040 seconds, how long it can take to cool down if temp is set lower
#temperature_control.hotend.runaway_range 20 # Max setting is 63?C

#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.

Second hotend 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
##temperature_control.hotend2.beta 4066 # or set the beta value
#temperature_control.hotend2.set_m_code 104 #
#temperature_control.hotend2.set_and_wait_m_code 109 #
#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 false #
temperature_control.bed.thermistor_pin 0.24 #
temperature_control.bed.heater_pin 2.5 #
temperature_control.bed.thermistor Honeywell100K # see
#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 true M106 # M107 # 2.4 # pwm # pwm output settable with S parameter in the input_on_comand 255 # set max pwm for the pin default is 255

switch.misc.enable false #
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

Switch module for spindle control

#switch.spindle.enable false #

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_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^ # add a ! to invert if endstop is NO connected to ground
alpha_max_endstop 1.25^ # 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 1.27^ #
beta_homing_direction home_to_max #
beta_min 0 #
beta_max 200 #
gamma_min_endstop 1.28^ #
gamma_max_endstop 1.29^ #
gamma_homing_direction home_to_min #
gamma_min 0 #
gamma_max 200 #

alpha_max_travel 500 # max travel in mm for alpha/X axis when homing
beta_max_travel 500 # max travel in mm for beta/Y axis when homing
gamma_max_travel 500 # max travel in mm for gamma/Z axis when homing

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 false # move XY to 0,0 after 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

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


zprobe.enable 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_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
#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.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

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

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 # Power_on #
#custom_menu.power_on.command M80 #

#custom_menu.power_off.enable true # Power_off #
#custom_menu.power_off.command M81 #

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 # the IP address
network.ip_mask # the ip mask
network.ip_gateway # the gateway address
network.mac_override xx.xx.xx.xx.xx.xx # override the mac address, only do this if you have a conflict

digipotchip mcp4451
digipot_factor 95.521 # DO NOT CHANGE FOR LASERBOARD
digipot_max_current 1.2 # Maximum current (Amps) the digipot will allow for all axis

switch.spread1.enable true
switch.spread1.output_pin 2.6
switch.spread1.startup_state true

switch.spread2.enable true
switch.spread2.output_pin 2.7
switch.spread2.startup_state true

switch.spread3.enable true
switch.spread3.output_pin 2.8
switch.spread3.startup_state true

switch.spread4.enable true
switch.spread4.output_pin 2.13
switch.spread4.startup_state true

#switch.spread1.input_on_command M106 # any command that starts with this exact string turns this switch on
#switch.spread1.input_off_command M107 # any command starting with this exact string turns off the switch


A few things aren’t adding up for me.

Can you carefully address each question here:

  1. Can you confirm that jogging controls are working in the direction expected? Up goes up, down goes down, etc.
  2. What are the expected dimensions of your laser in millimeters? Based on 14x9.5 inches I assume the expected dimensions are 350x240 mm but I don’t want to assume.
  3. Can you confirm that when you ran the ? command that you did so immediately after a homing operation? Based on your config.txt information it seems to me that your position after homing should have been 0,200 but that’s not what’s showing.






But this is not home as I cant move it in any way now. The time before was when I sent the info asked for. There is resistance on the servos I have reset the computer and printer. Did not push any reset butttons as I know not what they do. Or how to use them. Before it always joged in the right direction and smoothy. I do have the x axis plug in backwards to get it to go in right direction. I saw they put a ! (ex ! point) in the config on alpha pin.

The proper lights on board are working as should

The bed size is 14 x 9.5 and I just converted it to mm but it shows 14 inches by 9.5 in device settings.

So now I took a spare sd card and formatted it and added the orginial files from web sight. Now the up and down works OK but left and right is oppisite. I reversed the X servo wires and right was ok but when I went left it starts to go but just sits and vibrate. I reveresed the wires again then I took it home even though it was backwards manually as now it homes to top right. And did the ? mark thing. Here is results ?

This thing aint very persistance on what it does. I can just drag the orginial firmware that is a .bin file and the config file to a formatted sd card and it should work ok? On card it still shows .bin after transfer as I know it changes after inserted. I copied the two files from the orginial sd card they sent and put them on my desk top so I can load on a other card and always go back to thye orginial files. Have you had any problem with these boards? I emailed them and they have a no return polisy. and the msin guy named pete never replys.

i did home it to top left manualy before ?

C3D board assumes homing to top-left by default as far as I’m aware so that’s likely the most straightforward approach.

Can you upload the config.txt file that you’re now using? No need to copy/paste the content, just upload the whole file as-is.

The config.txt file is read at every boot so yes, you should be able to swap at will. I’m not familiar with the .bin file but I would assume that it’s not read each time but only during firmware upgrade request.

I have no direct experience with this board or C3D as a company but many people on this forum use it successfully.

Can you clarify what you mean by this?

Also, I’m trying to understand how the machine is able to home to both top-left and top-right. Do you have limit switches on both the top-left and top-right corners?

Switches are only on top left. That has always been homing in past. But now with newly formated sd card and orginial files it to top right for home and wants to keep going have to turn off. So I opened the top and pushed the laser home both ways and this is what the ? mark command says after hitting switches which I have tested and working fine N.C. contacts.



No limit switches at top right corner and they are mechanical type.

I never messed with the orginial bin or confg file. The .bin file will load and then change the .bin to something else so it doesnt go in a look till you load another bin file.

config.txt (28.4 KB)

This difference in the config file explains why the change in X-axis behavior:

alpha_dir_pin                                0.5              # Pin for alpha stepper direction

The older file has this inverted:

alpha_dir_pin                                0.5!              # Pin for alpha stepper direction

I suspect

Can you elaborate on this? Did you manually engage the switches? And how did you test the switches?

Can you run these steps and return results:

  1. With no switches actuated, run M119 in Console
  2. With X switch actuated, run M119 in Console
  3. With Y switch actuated, run M119 in Console
  4. With both X and Y switches actuated, run M119 in Console

Also, can you invert the X-axis and then take a video of the machine homing? I suspect it’s not going through a complete homing cycle.

This is my config. for smoothie compare it to your config
config.txt (28.4 KB)

no switches M119
X_min:0 Y_max:0 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:0 (Z)P1.28:1 (Z)P1.29:1

X switch pressed M119
X_min:1 Y_max:0 Z_min:1 pins- (X)P1.24:1 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:0 (Z)P1.28:1 (Z)P1.29:1

Y switch pressed M119
X_min:0 Y_max:1 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:1 (Z)P1.28:1 (Z)P1.29:1
Video I took after reversing x axis But cant send to your sight as Im not authorized to send videos.

I tested switches unhooked at board and put a multimeter on the pair of wires and they showed closed and then accitavated each one by hand and they went to open reading.

Thank you nice for you to do that. I will look and compair. Do you have the cohesion3d laserboard? Do you have a MLE model made by full spectrum. This is very confusing to me as I do a lot of upgrades and technology stuff and this looked so stright forward. You have 2 limit switches, a feed to fire the laser, and two servo motors. Cant be that hard. Thanks again

I built my frame and used the pwr supply from a k40, i am running a cohesion board.

These basically look okay. Were you able to test X and Y together to confirm they both show at the same time?

One oddity is that Z seems to be constantly actuated. I’m wondering if that’s potentially causing homing issues.

Can you confirm whether or not the switch was indeed actually actuated during that time? If not, can you test that Z_min goes to 0 if you activate it? If it does then inverting the switch should resolve the issue.

I will do the both switches tomorrow. In the top post I said…And if Im moving the axis in manual and hit the Z direction on the screen it lock up and have to restart the laser to get any manual movement…I dont use a z avis .

A person suggested me to get this board and there was suppose too be a guy named Pete was really good there at helping but he must be MIA as he’s not there to help any moore.

It could be because Z limit is seen to be actuated but not certain.