Extraordinary homemade open-source project, for more open-source project details, please visit the extraordinary community www.cn2220.com

Only compatible with Klipper firmware printers for now

Made two types of enclosures, divided into

Teflon plug-in version (for personal use, if it's not very tight, you can drop a little 502 glue on the Teflon tube)

PC4-M6 pneumatic connector version (with two more pneumatic connectors)

Note: The two enclosures are not compatible

Functional description:

Automatic print pause on filament run-out

Automatic print pause on nozzle clog

Automatic print pause on filament tangle

Automatic print pause on jam

PLA, PETG, ABS are all printable

If you don't want to assemble it yourself, you can also purchase the finished product through the following link to the B station workshop

Bilibili Workshop (bilibili.com)

BOM list and assembly drawings please see the attachments below, BOM table contains parts purchase link

Klipper firmware configuration reference (due to format problems, it is recommended to have the BOM table in the attachment)

#####################################################################

# Jam detection

#####################################################################

[filament_motion_sensor Jam detection]

detection_length: 10.0 # Detection distance, unit mm (recommended between 7-12mm)

extruder: extruder # Corresponding extruder name, don't move switch_pin: PC5 # Signal interface (check the mainboard pin diagram or pin interface number in the original configuration) pause_on_runout: True # Don't move

runout_gcode: # List of G-code commands to execute after filament run-out is detected.

M118 Filament Run-out Detected # Send a prompt message to the screen M118 can be customized after (if the screen does not support Chinese, please change it to Filament Load Detected)

M600 # Pause printing

insert_gcode: # List of G-Code commands to execute after filament insertion is detected.

M118 Filament Load Detected # Send a prompt message to the screen M118 can be customized after (if the screen does not support Chinese, please change it to Filament Load Detected)

event_delay: 3 # Don't move as much as possible

pause_delay: 0.5 # Response time Don't move as much as possible (if there is a false report, you can increase it to 1)

Assembly video