Sunlu S4 Spool Rotation Mod Upgrade

Introducing an auto-rotation mod for the Sunlu S4 filament dryer. I made this mod for various reasons. One reason is that this has not been previously done. Secondly, on the drying phase, not only will the spool be spinning, which allows for an even drying result, but it will also speed up the drying process considerably. Seven of these parts are 3D printed. You will need to make three physical cuts into your Sunlu dryer: Two for the gears to pass through and one for the switch. This modification uses the 12V power system of the dryer with the addition of a DC-DC Buck Converter, we are changing the voltage from the original ~12V to now approx ~3-4V. The Lower the voltage, the quieter and slow it'll spin. Is to keep the gears in Is to reduce the RPM to a controlled speed, allowing for slow consistent rotation to be used during filament drying. Filament used to print this is ASA (Link below), i chose this so it wont deform during operation. Instructions: This project involves working