The boom in technology for the Internet of Things combined with the low cost of the ESP8266 Wi-Fi module has seen an increase in breakout boards by a number of manufacturers. Specifically, we are going to be looking at Adafruit’s Huzzah, SparkFun’s Thing Dev, and the NodeMCU. There are currently 14 variations of the ESP8266 module all offering something different in terms if I/O They are manufactured by Shanghai-based Espressif and became popular in the end of 2014 with the introduction of the ESP-01.
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