Datasheet

Plug your Gemma into your computer using a known-

good USB cable.

A lot of people end up using charge-only USB cables

and it is very frustrating! So make sure you have a USB

cable you know is good for data sync.

Double-click the small Reset button opposite the On/Off

switch on your board. You will see the Dotstar RGB LED

turn green. If it turns red, check the USB cable, try

another USB port, etc. Note: The little LED next to the

On/Off switch will be red - this is ok!

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

GEMMABOOT.

Drag the adafruit_circuitpython_etc.uf2 file to

GEMMABOOT.