Simple filament runout sensor (using Ender 3 endstop switch)
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Simple filament runout sensor using Ender 3 endstop switch (incl. the PCB) and a 5.5mm steel ball.
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- Printables
- Kategoria
- Creality Parts & Upgrades
- Licencja
- Creative Commons — Attribution — Noncommercial
Not much to tell, really. Needed a filament runout sensor on my Klipper-based corexy machine.
This one's using a standard Ender 3 endstop assembly (microswitch and 3 pin connector on a PCB) because I had a few sitting around from the good ol' days. The 5.5mm steel ball makes sure the filament can be pushed in the other direction with ease (especially if you have a macro in place that retracts filament on runout).
To fit the endstop assembly into the printout, you'll need to bend the microswitch's lever slightly (as in the photo).
On my SKR 1.3, I've connected the endstop to the GND and Signal pins of the X+ connector. On the filament runout sensor itself, the original Ender 3 cable is wired so it goes in the first and third pins (so the switch is connected in a Normally Closed mode).