Program an IoT pushbutton with a DIY Blynk Board: 
In my previous article, I explained how to set up a DIY Blynk Board using an ESP8266 based microcontroller. Blynk is an easy way to start creating Internet of Things projects. It’s not tied to any specific board, so you can use the platform to control Arduino, Raspberry Pi, and other hardware of your choice over the internet.
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