Woh! Super low cost WiFi module is here, we are carrying it now! The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost effective board with a huge, and ever growing, community. There are plenty discussion and happening in the official community: http://www.esp8266.com
Features:
Picture above show the pinout of WiFi Serial Transceiver Module (ESP8266). The reason why we said not breadboard-friendly is because it will short-circuit the pin connection when you directly connect those pins to breadboard.
Documents:
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