USB Media Dial

Turn up the volume! Build a custom USB HID media dial with STEMMA QT Rotary encoder and CircuitPython.
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updated May 21, 2024

Description

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This is a USB HID device that is set up to play media and adjust the volume of your speakers. Underneath the knob is a NeoPixel strip that changes color whenever it’s turned up or down.

You can single-click to play and pause media, double-click to skip to the next track. If you long press, it’ll mute the speaker's volume.

The electronics are housed in our 3D printed snap fit enclosure that features a new design. The knob features a built-in LED diffuser with textured knurling on the outer edge.

We used the filament swap technique to make a multi-material print so there’s no need for a multi-extruder. Just use white PLA filament to diffuse the LEDs.

Code, libraries and assembly instructions are documented in the project Learn Guide links below. 

Learn Guide
https://learn.adafruit.com/usb-rotary-media-dial/ 

QT Py RP2040
https://www.adafruit.com/product/4900 

STEMMA QT Rotary Encoder
https://www.adafruit.com/product/5880 

NeoPixel Side Light Strip 120/m
https://www.adafruit.com/product/3634

STEMMA QT Cable
https://www.adafruit.com/product/4399 


 

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