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Configure a BlTouch probe

Wiring the probe

The printHAT 2 is designed to be compatible with the Antclabs BlTouch probe out of the box, which means the pinout on the GPIO and expansion ports of board match the probe connnectors with no need for swapping wires. Plug a genuine BlTouch to the printHAT according to the picture below.



Software configuration

Once the probe is wired to the printHAT, you can move on to modify the KLipper configuration file as follow:

  • add the [bltouch] section
    sensor_pin: PA4
    control_pin: PA8
  • update the Z axis configuration and add [safe_z_home] section (optional, only if probe is used to home Z)
    endstop_pin: probe:z_virtual_endstop
home_xy_position: 100,100 # Change coordinates to the center of your print bed
speed: 50
z_hop: 10                 # Move up 10mm
z_hop_speed: 5

In case of troubles, you can always have a look at the official Klipper BlTouch documentation or get in touch with us through one of the available support channels.