WYZE filament run-out sensor

thingiverse

Filament runout sensor using a WYZE door prox sensor is a clever design that utilizes a spring and M8x3 magnet to trigger the switch. The trigger distance is determined by the strength of the magnet, which can vary slightly from one to another. If this is the case, you can easily adjust it by sanding down the plunger body so it recesses inside the main body more, thus closing the gap more tightly. Alternatively, if the sensor is too close, simply dab a little scrap plastic on the plunger end with a lighter and shape it to fit perfectly before sanding as needed. The bucket of this design features an M3 hole where you can insert a long M3 bolt to pull the bucket back, allowing for easy filament swaps. I've also included two different back plates: one that makes the sensor its own thing, and another that can be mounted on a pegboard. Since my printer is set up with a pegboard, I prefer to use the latter. Here's what you'll need to print this design: * WYZE door sensor (just peel off the sticky bits on the back) * 3x M3x10 bolts * 2x M3x30 bolts * 1x spring (I used one from an assorted spring kit I picked up at Home Depot) Feel free to remix this design using a different spring or even the actual WYZE magnet that comes with the sensor. Printed on my Qidi X Plus at .2 layer height in PLA, some sanding may be required to get everything to fit perfectly. To avoid any issues, print the bucket standing upright and the body on its flattest side, so the layerlines of both parts are oriented differently to prevent binding.