Ender 3 - Filament runout sensor show off

creality-ender3/README.md

@@ -229,6 +229,7 @@ After firware update, proceed with the different calibrations in the above order
 | Item  | 3D files  | Final result |
 |-------|-----------|--------------|
 | [BTT SKR E3 mini mainboard](https://www.aliexpress.com/item/4001050145015.html) | n/a | ![show off](images/mods/btt-skr-e3-mini-v2.jpg) |
+| Filament runout sensor | n/a | ![show off](images/mods/filament-runout.jpg) |
 | [BLTouch](https://www.aliexpress.com/item/32777786433.html) for Automatic Bed Leveling (ABL) | n/a | ![show off](images/mods/bltouch.jpg) |
 | _Raspberry Pi 4 / Octoprint case_ ([tutorial to enable power switch/LED](https://web.archive.org/web/20250101204129/https://embeddedcomputing.com/technology/open-source/development-kits/raspberry-pi-power-up-and-shutdown-with-a-physical-button))   | [Printable](https://www.printables.com/model/1008828-creality-ender-3-station-lcd-raspberry-pi-4)  | ![show off](images/mods/octoprint-case.jpg) |
 | _Ender 3 PSU Support Bracket_       | [Thingiverse](https://www.thingiverse.com/thing:3444134) | ![show off](images/mods/psu-support-bracket.jpg)|