#Usage

• Step1: Scratch Extension

  1. Launch your Scratch Offline Editor.
  2. Click File with pressing shift, there will be an additional option import experimental HTTP extension.

  3. Choose S4A.s2e and import it, then you will see some new blocks in More Blocks.

• Step2: MQTT broker

  Launch an MQTT broker.

  

• Step3: scratch-mqtt Project

  1. Run ScratchPublisher.java to listen for Scratch signals and tranfer them to Subscriber.java.
  2. Run Subscriber.java to listen for tranferred data from ScratchPublisher.java.

  

• Step4: When click blocks on Scrach Editor to run. The result of receiving signal from Scratch Editor will show on ScratchPublisher.

• 

• Demo