Blog post for code & files : http://www.raviyp.com/embedded/239-arduino-mqtt-library-with-publish-and-subscribe-example

In this video we will see how we can write simple Arduino code to interact with a MQTT broker through a TCP connection created by SIM900 GSM GPRS module. You can also use this same code along with SIM800 or SIM808 modules which support the same AT commands for TCP/IP.

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