ESP8266-WiFi-MOD is a very tiny board. It is built around Espressif’s Wi-Fi chipset ESP8266EX. Module ESP8266-WiFi-MOD comes preprogrammed with UART-WIFI bridge demo software. This give possibility to connect to Internet with simple AT commands from any microcontroller occupied with UART interface. Source code for this application and complete Expressif SDK for the ESP8266 is publicly available.
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