Filament Sensor V1

Fits a Wemos D1 Mini with an LED and light sensor with appropriate resistors. When the Wemos sees that you've run out of filament it sends a message to Octoprint to pause the print. I have Home Assistant then send me a notification on my phone, but you could easily have the Wemos do this as well.

I have uploaded the code to my github

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

Yes

Resolution:

0.12

Infill:

35%

Custom Section

I might revisit this project in the future. The box currently hangs pretty loose on the rail. Also might add a bowden tube throughout the box and to the extruder to limit friction.