A USB volume knob powered by Raspberry Pi Pico, featuring a stylish minimalist look, tactile & intuitive controls, RGB audio visualisation, and integration with the Spotify desktop app.

🔊 Specs

Hardware

• Raspberry Pi Pico Rev3
• KY-040 incremental rotary encoder (with detents removed)
• Adafruit 24 RGB Neopixel ring
• SN74AHCT125 logic level shifter
• Custom veroboard PCB
• Custom wooden exterior, laser-cut diffuser and 3D printed internals

Software

• ampy (Adafruit MicroPython tool) 1.0.7
• VSCode tasks to automate build process

Device

• MicroPython 1.18
• Neopixel Pico library

Host

• Python 3.10.4
• pyserial 3.5
• pycaw 20220416
• winsdk 1.0.0b4
• SoundCard 0.4.2

🎵 Links

• Interactive Pico Pinout
• MicroPython docs
• ampy on GitHub