In Microsoft Edge, Firefox and Internet Explorer, you can save the .uf2 file directly into the CPLAYBOOT drive!
Uploading programs on your Adafruit Circuit Playground Express
While you’re writing and testing your programs, you’ll mostly be running them in the simulator, but once you’ve finished your program you can compile it and run it on your Adafruit Circuit Playground Express.
The basic steps are:
- Connect your Adafruit Circuit Playground Express to your computer via USB
- Press the reset button once and see that the CPLAYBOOT drive appears
- Click Download and download the
.uf2file - Copy the
.uf2file from your computer onto the CPLAYBOOT drive