Filament runout sensor ender
thingiverse
This part is a brace to use with the stock Z-end stop switch. This part requires the BLTouch upgrade kit. Once the kit is installed, the Z end stop switch becomes useless. This part uses the spare switch as a filament runout sensor, no extra parts needed. I have tested this part on an ender 5 pro. It would be appreciated if anyone with an ender 3 can verify this will also work. Remember to update the marlin firmware and to set the correct pin for the switch: #define FIL_RUNOUT_PIN Z_MIN_PIN
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