BTT SFS V2.0 Mount for Sovol SV08

Prints flat, no supports needed, material and settings shouldn't really matter. I used eSun ABS+. 

This mount attaches to the stock spool holder just like the original, and allows you to replace the stock runout sensor with a BigTreeTech Smart Filament Sensor V2.0, enabling the printer firmware to detect runouts, tangled filament and extruder issues. The mount was designed to maintain the original filament path, so it works perfectly with the official enclosure. It also reuses the stock mounting hardware (screws and spacers), and allows the SFS v2 to swivel like the stock sensor. 

While the original sensor, and the official (far more expensive) tangle sensor option, only use one signal pin and three wires total, SFS v2 uses two signal pins and four wires total, and the stock controller board has almost no spare IO. A cheap and easy solution to that problem is a BluePill (a development board based on the same STM32F103 microcontroller the stock mainboard and toolhead board use). BluePill clones are available on Amazon and Ali Express for around $3 each and can run Klipper and Katapult just fine - even using Sovol's customized Klipper version. You'll still need a STLink programmer for the initial setup, of course. Other USB-capable boards like a Raspberry Pi 2040 or 2350 should work as well, but I had a bunch of BluePills sitting around collecting dust, so that's what I've used.