Datasheet

Downloading and Flashing

Getting your code into your device is very easy with MakeCode. You do not need to install any software on your

machine and the process takes two steps:

Step 1: Connect your board via USB and enter bootloader mode

Step 2: Compile and Download the .uf2 file into your board drive

We are going to go through these two steps in detail.

Step 1: Bootloader mode

Connect your board to your computer via a USB cable. Press the reset button once to put the board in bootloader

mode.

When the Circuit Playground Express is in Bootloader mode, all the LEDs will turn red briefly, then green. Verify your

status LED is also pulsing red. Your computer should show a new removable drive called "CPLAYBOOT"

If the LEDs are all red: Either the computer is still installing drivers (Please wait a minute, Windows takes some time to

install updates.) or you have a bad USB connection. If you keep getting red LEDs - try a new USB cable (you may want

to ensure your USB cable is not charge only, it needs to transfer data) or a different USB port.

If it is your first time running MakeCode or if you have previously installed Arduino or CircuitPython, you may

need to double press the reset button to get your board into bootloader mode.