Filament runout sensor small

thingiverse

I was unable to find a filament sensor that matched the size of my micro switch, which measured 12.9mm x 6.5mm x 5.9mm using my calipers. All available sensors were too large. In response, I quickly created my own sensor. I designed it with a cover that attaches via small tabs, but I chose not to print it so I could see the internal workings of the sensor. The switch is friction-fit and can be easily removed by taking out the futaba connector at the bottom, which I made large enough to accommodate cables. To hold the connector in place, I used hot glue. For those who prefer a more secure connection, you can use a cable extension, such as the one shown in this link: https://www.ebay.co.uk/itm/1-10-Servo-Extension-Male-to-Female-Lead-Wire-Cable-For-RC-Futaba-JR/192736103784?hash=item2cdff78d68:m:maQKD0zXCLcUJh7IZ2Mlftg. Simply cut the extension to size and use both ends. If you choose to create your own sensor, I recommend using an ultra-mini micro switch with a one-body size of 12.9mm x 6.5mm x 5.9mm. A similar product is available on eBay at this link: https://www.ebay.co.uk/itm/2x-Mini-Micro-Switch-13-mm-Roller-Lever-Microswitch-D2F-V5-SW054-SPDT/230785336410?hash=item35bbe0c45a:g:IxkAAMXQ6M5RX-cJ