Sunlu AMS Dryer Automatic Valve Mod

This is my remix of the Sunlu AMS Dryer Valve model that is much easier to implement - no mucking around with mains power, minimal connections, just connect USB power & go! This project was developed to leverage the existing Sunlu AMS Dryer ‘valve & servo’ design, whilst removing the need to add external hardware or tinker with mains power and using an open code base. This system leverages an Arduino Pro Micro running lightweight code - it & the servo can be powered off a standard USB power supply. The code is designed to monitor a fan channel that the Pro Micro is connected to (via a resistor divider), and open the valve when a fan is seen to be active and close it when the AMS Dryer is inactive or off. Bill of Materials: Arduino Pro Micro 9g servo This 3D print Assortment of ~24awg wire Resistor divider (eg. 5k & 7k) or digital-/opto-isolator USB charger & USB-C cable USB-C to USB-C panel mount extension cable Connections: Connect the fan sense line + to GPIO 19 via the resistor divi