BIGTREETECH SFS V2.0 User Manual
20
Firmware Modification
1. The signal output of the switch sensor is at low level when no filament is
detected, IO pin should be set to pull_up input.
2. The signal output of motion sensor changes level at every 2.88mm of filament
movement, the IO pin should also be set to pull_up input.
For details: https://github.com/bigtreetech/smart-filament-detection-module
Taking the SKR3 motherboard as an example:
1. Klipper
[filament_switch_sensor switch_sensor]
switch_pin: ^PA0 # switch sensor IO is PA0 pause_on_runout: False
runout_gcode:
PAUSE # [pause_resume] is required in printer.cfg
M117 Filament switch runout
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