Filament Runout Sensor for Creality Ender 5

thingiverse

I upgraded the filament runout sensor by Baccula to fit my Ender 5 seamlessly. To ensure optimal performance, I tweaked the filament path slightly to improve switch triggering and added shallow cutouts under the limit switch to accommodate pins on the PCB bottom. I utilized a spare Z-axis end-stop switch and its cable that I had lying around since I've already fitted a BLTouch to my Ender 5. If you don't have an auto-bed levelling solution installed, you can purchase spare end-stop switches from eBay, Aliexpress, etc., for just a few dollars or pounds/euros. Simply search "Creality End Stop" and you'll find plenty of options. However, if you're still using the stock mainboard, there's no port to plug in a filament runout sensor. You'll need a pin 27 board to make it possible. To fit this upgrade, you'll require the following hardware: * 2 M3 by 12mm bolts * 2 M3 drop-in T nuts * 2 M3 by 5mm bolts (you can reuse the ones from the existing Z end stop if reusing it) * 2 short pieces of Bowden tube, approximately 20mm long; length isn't crucial * Optional: a small dab of your favorite glue to secure the bowden tubes in place Don't forget to enable filament runout in Marlin. I followed this guide from Teaching Tech on YouTube.