🎛️ VolControl

A DIY volume knob & device switcher for Windows
Built with Arduino Pro Micro + Python ✨

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🔍 Overview

VolControl transforms an Arduino Pro Micro (ATmega32U4), an SSD1306 OLED screen, and an EC11 rotary encoder into a sleek volume controller.

• 🔊 Rotate the encoder → Adjust system volume
• 🎧 Press the encoder → Switch audio device (via F13 key + SoundSwitch)
• 💡 F13 is chosen because it’s unused (i think) in Windows, avoiding conflicts

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🛠️ Hardware

• Arduino Pro Micro (ATmega32U4)
• SSD1306 OLED display (128×64, I2C)
• EC11 rotary encoder with push-button
• Jumper wires / breadboard (or custom PCB)
• 3D Printed case (Optional)

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💾 Software

1. Arduino Sketch

1. Open main.cpp in the PlatformIO.
2. Verify/adjust I2C pins and encoder pins if needed.
3. Upload to the Pro Micro.

2. Python Controller (PC)

VolControl-SerialCOM.py, A Python script reads serial data and controls Windows volume using PyCAW.

1. Install Python 3.6+

2. (Optional) Create & activate a virtual environment:

   python -m venv venv
   # Linux/macOS
   source venv/bin/activate
   # Windows
   venv\Scripts\activate

3. Install dependencies:

   pip install -r requirements.txt

4. Plug in VolControl via USB and run:

   python VolControl-SerialCOM.py

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🚀 Usage

• 🔊 Rotate encoder → Increase / Decrease volume
• 🎧 Press encoder → Change device

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📦 Prerequisites

Arduino Libraries

• Adafruit_SSD1306
• Adafruit_GFX
• Encoder
• HID-Project

Python Packages

Provided in requirements.txt:

comtypes
pycaw
pyaudio
pyserial

Windows Software

• SoundSwitch by @Belphemur

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