## USB Volume Control using Adafruit Rotary Trinkey [![USB Volume Control](pic/rotary.webp)](pic/rotary.webp) [![Adafruit Rotary Trinkey](pic/rotary-board-200x.png)](pic/rotary-board.jpg) [Adafruit Rotary Trinkey](https://www.adafruit.com/product/4964) is a cool, 30-minute DIY build project. And having a nice tactile USB volume control knob on your table is very convenient. Also, I dig Circuit Python development approach: the device is recognized as a USB drive. To program it, you just edit [code.py](https://learn.adafruit.com/adafruit-rotary-trinkey/creating-and-editing-code#1-use-an-editor-that-writes-out-the-file-completely-when-you-save-it-2977444-22) file using any OS/editor. Changes applied immediately on save. Outputs on [serial console](https://learn.adafruit.com/adafruit-rotary-trinkey/connecting-to-the-serial-console). No development environment setup is needed! Nice, easy, and very refreshing. * Just enough circuitry for volume control * Computer sees device as HID. Simulates pressing keyboard media keys so compatible with any OS - Also can simulate mouse, for example for a scroll wheel * Play/pause on click * Extra touch button (for example for next track) * Fits in [Airport Tick Tac](https://www.google.com/search?q=tic+tac+mini) box * Multi color RGB LED which you can use for current volume indicator or system notifications * Put in laptops USB port, USB hub, or using an extension cable to get gadget in convinient location * [Source Code](https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Rotary_Trinkey/CircuitPython_Volume_Knob_Example/code.py) using (Circuit) Python is short * Requires tiny bit of soldering Overall I had a lot of fun with this little gadget. Totally recommend! 🏷️DIY 🏷️Adafruit