Filament Monitor

Triggers a printer Pause due to filament error by interacting with an I/O pin on the motherboard. Currently works with both sailfish and marlin firmwares. Curious about expanding to other printers.

3D printer parts and enhancements

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Available for purchase here:

In action: 
any type of loss of filament movement due to: 
1) Out of Filament 
2) Filament Jam 
3) Extruder Clog 
Activates firmware pause by dropping PJ2 voltage to near zero after several seconds of nonmotion.

Materials and methods

Custom PCB
Electronic Components



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Mini imageRflynn commented ago

Will it work with hictop prusa i3 ? I have a filiment monitor.

Mini imageRflynn added this to the 3D printers collection ago
9f78bda61464ecaf6610629ee2963a3b?default=blank&size=40Theo added this to the UM2 collection ago
730a061596c420c8915d9f20bd5d89e1?default=blank&size=40Marcus Wolschon commented ago

Do you sell the custom PCB? The entire detector is $65 + $55 shipping. A PCB and some loose parts would fit in an envelope with me being able to 3D print the housing and assemble it.

Fa358a0b437d628e89e39b1cc89b1c11?default=blank&size=40Eghia Hay added this to the 1 collection ago
41ed0417728a0736e2467d789aa9e06d?default=blank&size=40Luca Costabile added this to the CTC 3D printer collection ago
Daaf65451e2d0215115b52461917be27?default=blank&size=40jingdong added this to the 3D collection ago
30fbe88468deb3ea1a8e78af2cdb843f?default=blank&size=40erikgj added this to the UM2 Upgrades collection ago
Mini careful scientistAaron Tunell published this design ago