3. Case 01: Connect Scratch-Windows
Connect Scratch with Smart Coding Kit.
1 x Smart Coding kit
1 x computer(support Bluetooth)
System Version（Windows 10 version 1709+）（macOS 10.13+）
Bluetooth Version（Bluetooth 4.0）
What is Scratch ?
Scratch is a graphical programming tool developed by Lifelong Kindergarten Group from MIT, it suits for teenagers.
Scratch online programming link: https://scratch.mit.edu/projects/editor
Scratch software download: https://scratch.mit.edu/download](https://scratch.mit.edu/download)
Both the software and the online version are acceptable, you can choose one.
Scratch Link (Windows)：https://downloads.scratch.mit.edu/link/windows.zip
Scratch Link (macOS)：https://downloads.scratch.mit.edu/link/mac.zip
3.5. Connection Steps
Connect the micro:bit to your computer and send the prepared micro:bit firmware to the micro:bit.
Give power to micro:bit solely and the displaying characters on the micro:bit is the identification code for Bluetooth.
Open Scratch Link and you will see an icon of it on the status bar.
Open the Scratch coding software, choose micro:bit expansion after clicking
+on the left bottom.
Choose your micro:bit in the pop-up dialogue box.
If connection is completed, the yellow exclamation mark changes to a green check mark.
Now you can code the micro:bit with Scratch!
Fail to connect Scratch
The lowest operation system version is listed at the top of this page.
Only one copy of the scratch can be connected to the micro:bit. If you have open the Scratch in other browsers, please close all of them and re-try.
If there is another computer connecting to your micro:bit, please cut off the connection with another computer or yours, and re-try.
You might press the “reset” button between the USB connector and power supply connector on the back of the micro:bit while operating it, make sure your hands or feet be away from it!
3.8. Relevant Files
Scratch official connection files: https://scratch.mit.edu/microbit
Scratch official website: https://scratch.mit.edu