To use Crickit, we recommend CircuitPython. Python is an easy programming language to use, programming is fast, and its easy to read.
If you're using Circuit Playground Express (CPX), Please install this special 'seesaw' version of the CPX firmware. Plug the USB cable into the CPX, double click the reset button until you see CPLAYBOOT drive, then drag the UF2 file onto the disk drive:
What's nice about this special version is that the adafruit_crickit, adafruit_seesaw and adafruit_motor library is built in, which saves you tons of space and makes it really fast to get started
Click the link above to download the latest UF2 file
Download and save it to your Desktop (or wherever is handy)
Plug your Circuit Playground Express 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 in the middle of the CPX, you will see all of the LEDs turn green. If they turn all red, check the USB cable, try another USB port, etc.
(If double-clicking doesn't do it, try a single-click!)