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This project is very easy but useful.

Prepare 1 D-duino

Step 1: Follow Github Project

Then follow this project ESP8266 QRcode

Step 2: Check With Your Smartphone

Do not forget change SDA,SCL pin to D1, D2. D-duino can show a lot of information from WiFi.

You can add useful information to your code.

Then check with your smartphone.

See, I can read Helloworld.

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More by lspoplove:How to Attack WiFi by Pocket 8266 Pocket 8266 --ESP8266+18650 Battery(DHT to Thing Speak Project) Make a WiFi Necklace 
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