Hey, you! Are you....
- Disappointed by puny linear potentiometers or rotary knobs in your electronic projects?
- Looking for a big, sturdy input method, made of heavy-duty steel and cast iron?
- In need of a unique, customisable input for your Arduino / Raspberry Pi / ESP32 project?

In this video tutorial, I'll explain how to turn any regular plumbing valve into an analog input that can be read on a microcontroller, using just an LED and a Light Dependent Resistor (LDR).