PlatformIO project for the Arduino Micro which turns it into a USB HID Volume Controller for any PC.
This repository contains a platformio.ini. It should suffice to open the project in PlatforIO and click on upload.
If the direction is reversed you can switch the pin numbers at the #defines instead of switching the cables at pin 2 and 3.
You can use the ArduinoIDE: Just copy the code from src/main.cpp to your sketch and select "Arduino Micro" as your board.
There are only a few components needed apart from the encoder: Left, right an the switch each use a 10k pull down resistor and load a small 22nF capacitor over another 10k resistor. The capacitor debounces the switches in the encoder.
Feel free to switch to other pins if your project adds more components. Pin 2 to 4 are fine on the Arduino Micro and Pro Micro. A Leonardo should work fine too but does not fit in the case below.
There is a technical drawing for a case in steampunk style for the device in the CAD-Files folder.
The STL file for the 3D printed knob is here.
