mqtt

IoT and MQTT

Ok, my previous blog entry outlined how to make the NodeMCU board a lot more useful by adding the DHT22 sensor which captured temperature and humidity. This is nice but does require a serial connection between my Linux machine and the NodeMCU board to make the information measured visible. Requiring a hardwired serial cable to establish connectivity made this prototype a lot less useful in the world of IoT. The objective of this blog post is to 'Cut the Serial Cord' and go wireless. Here is where the ESP8266 chipset…

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