Emergency Stop Button Mount for The 100
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Mount emergency stop button to the front of The 100 v1.1 3D printer.
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This mounts to the front of the 100. It should any button with a 16mm shaft. The recessed version is designed for buttons with 19mm faces. For reference, this is the button I bought: https://www.aliexpress.us/item/3256804754630517.html?spm=a2g0o.order_list.order_list_main.5.349a1802S7BnM2&gatewayAdapt=glo2usa.
I set this up as a NC switch, wired to pin 37 of the BPI M2 Zero (which according to https://wiki.banana-pi.org/Banana_Pi_BPI-M2_ZERO#GPIO_PIN_define translates to GPIO17). As such, the relevant part of my config looks like this:
[mcu rpi]
serial: /tmp/klipper_host_mcu[gcode_button kill_switch]
pin: ^rpi:gpio17
press_gcode: {action_emergency_stop()}
When pressed it runs the emergency stop action, which is the same thing that runs when the “Emergency Stop” button is pressed in Mainsail/Fluidd.
Note that you will need to set up the Pi as a secondary MCU. The Klipper documentation does a much better job than I ever could of explaining how to set that up: https://www.klipper3d.org/RPi_microcontroller.html.