Ender3 weight sensor (load cell) side spool support

This design is for an ender3 side spool mount (yes, another one) but this one is with a twist, it incorporates a weight sensor, so with the octoprint plugin "Filament scale" you'll be able to know how much filament you have left, from the octoprint web interface, in real time and with precision.

So, what you have to do is to print the two parts in the STL, and from there, you need to locate 2 M5 machine screws, and 2 M4 machine screws. I dug through my ender3 spare screws that were leftovers from the making of it, and found the right screws, so no need to buy some. To link the printed support to the stock spool holder, you reuse the stock screws and nuts (the rectangle 10x10 extrusion nuts)

Then, you need a weight sensor (they're called load cells) and found mine here: https://www.aliexpress.com/item/32958628401.html I bought the 5kg load cell with the HX711 AD module.

Mount all this toghether, and connect the load cell to the HX711, and then the HX711 to the raspberry pi. WAR