Arduino BLE with Scratch 3.0

Doojin Kang
1 min readMar 2, 2020

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Scratch 3.0 BLE extension example

About Scratch 3.0

Scratch 3.0 is Web application, it works on Browser. It can connect BT/BLE devices with the help of Scratch Link program.

Scratch Link is native application who manages the connection of BT/BLE devices, and provide websocket channel to Scratch Web application.

Control RGB LED Example

I don’t touch much about the scratch 3.0 here. Please refer the following about how to make scratch 3.0 extensions.

https://github.com/LLK/scratch-vm/blob/develop/docs/extensions.md

The example BT/BLE Arduino code for both BLE Nano and Arduino with HC-05 Bluetooth.

https://gist.github.com/doojinkang/23828cc6017524676721efb1fccacd4d

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