Ender 3 Filament runout sensor and guide with bearing

thingiverse

Thank you to blaiseb for sharing his expertise! He cleverly places the Fusion360 file inside a Zip folder. I also add my own Fusion360 file to the Zip package. Now I'm eager to create a sensor with an LED indicator that alerts me when the filament is running low or in need of replacement. The design features two 3mm LEDs from an old computer case, along with two 100 Ohm resistors. To connect these components, I utilize the +5V, ground, and signal pins available on my MKS Gen L Board. Hot glue securely fastens the LEDs and resistors in place, ensuring a sturdy setup. On a separate note, I encountered an issue while using Marlin 1.1.9 software, where the unload and load length settings weren't functioning as expected. However, after some troubleshooting, I discovered that setting the printer to factory defaults with M502 and then reloading the new settings with M500 resolves the problem. Before resetting the printer, be sure to record your current Z Offset setting, as it will be lost during the reset process.