Laser Head Crashing into Gantry

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This can occur for a number of reasons, so review the following:

    1. Check that the endstop/limit switches are being read properly by using the M119 command in the LightBurn Console by Testing the Endstops.
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    2. Confirm that the endstop/limit switch cables are connected properly at each end and that none of the individual wires have come loose.
    3. Try increasing the currents to dial in stepper motor performance: Changing Stepper Motor Currents on the LaserBoard
    4. Ensure that your configuration file parameters and LightBurn dimensions are set up to match your bed in the below instances: Setting Up the Correct Bed Size
      1. If you have enlarged your bed parameters to garner slightly more workspace
      2. If you have done mods to extend your bed size in the machine
      3. If you have moved your controller into a new machine with a different bed size
      4. If you have enlarged your bed parameters and are switching between Smoothie and GRBL-LPC, or updating the firmware, it will default back and will need to be modified again
    5. Decrease the fast homing value in the config file. Try lowering to 100 or 50, until fine tuned.
      alpha_fast_homing_rate_mm_s adjusts the speed in millimeters/second (X axis)
      beta_fast_homing_rate_mm_s adjusts the speed in millimeters/second (Y axis)
    6. For optical endstops, ensure that the sensors are clear of debris.
    7. If you also have soft limit switches and they are not stopping the job when triggered, uncomment the limit switch parameters and ensure they are enabled (this does not apply for standard endstop installation):
      alpha_limit_enable true
      beta_limit_enable  true
    8. Update the max travel distance to be equal to or slightly more than your bed size measurements to ensure your endstops are actuating, but not crashing when homing:
      alpha_max_travel 300
      beta_max_travel  200
    9. If your machine homes to a different location than rear left or moves opposite of what you expect, you may need to invert the direction pins by removing or adding an exclamation point on the end of the pin value in the config file:
      alpha_dir_pin 0.5
      beta_dir_pin  0.11