• For Arduino, Circuit Playground Express, ESP-8266, Robohat-MM1, and Raspberry Pi Pico boards, install the server firmware. See the Preparing Your Micro-Controller section of the User's Guide.

• Launch the Scratch3 Editor using either the online or offline sites described in the Ready, Set, Go/Launch The Scratch3 Editor section of the User's Guide.

• Select your extension and start coding!.

Make sure you are using:

npm 9.6.3

nodejs v19.9.0

yarn 1.22.19