CircuitPython is a derivative of MicroPython designed to simplify experimentation and education on low-cost microcontrollers. It makes it easier than ever to get prototyping by requiring no upfront desktop software downloads. Simply copy and edit files on the CIRCUITPY drive to iterate.
Follow this step-by-step to quickly get CircuitPython working on your board.
Click the link above and download the latest UF2 file.
Download and save it to your desktop (or wherever is handy).
Plug your Neo Trinkey directly into your computer's USB port, or via an adapter if needed.
Double-click the small reset button (indicated by the red arrow), and you will see the NeoPixel RGB LEDs turn green (indicated by the green box in the image). If they turn red, try another port, or if you're using an adapter or hub, try another adapter or hub.
If double-clicking doesn't work the first time, try again. Sometimes it can take a few tries to get the rhythm right!
You will see a new disk drive appear called TRINKEYBOOT.
Drag the adafruit_circuitpython_etc.uf2 file to TRINKEYBOOT.