*MAKE SURE THE MICRO:BIT IS CONNECTED* This is a debugger for the micro:bit. This is used to see if there are any problems with your micro:bit, by using various screens to tell if buttons are pressed, all the leds work, etc.
All credit goes to Avtruong. Let me know if there are any missing features down in the comments below! How to connect your micro:bit: 1. Download Scratch Link and use the setup wizard to install it (https://scratch.mit.edu/microbit) 2. Download the Scratch micro:bit HEX file (just scroll down and the download link is there) 3. Connect the microbit to the computer using the cable provided with it. 4. Unzip the HEX file and drag the file into the micro:bit (usually the D drive) 5. Go to the editor and add the micro:bit extension. It will detect the microbit, and you can start playing from there!