ESP8266

ESP8266 is a complete and self-contained Wi-Fi network solutions that can carry software applications, or through Another application processor uninstall all Wi-Fi networking capabilities. 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.

Model	Pinout	GPIO	Buy
ESP-01		GPIO0/2/16	ESP8266 ESP-01 Serial WIFI Wireless Transceiver Module $2.11 $17.00
ESP-02		GPIO0/2/15
ESP-03		GPIO0/2/12/13/14/15/16	ESP8266 ESP-03 Serial WIFI Wireless Transceiver Module $2.07 $2.15
ESP-04		GPIO0/2/12/13/14/15/16
ESP-05		NONE	ESP8266 ESP-05 Serial WIFI Wireless Transceiver Module $1.88
ESP-06		GPIO0/2/12/13/14/15/16
ESP-07		GPIO0/2/4/5/12/13/14/15/16	ESP8266 ESP-07 Serial WIFI Wireless Transceiver Module $2.18 $1.88
ESP-08		GPIO0/2/12/13/14/15/16
ESP-09		GPIO0/2/12/13/14/15
ESP-10		NONE
ESP-11		GPIO0/1
ESP-12		ADC + GPIO0/2/4/5/12/13/14/15/16	ESP8266 ESP-12 Serial WIFI Wireless Transceiver Module $2.06 $1.75
ESP-12E		ADC + GPIO0/2/4/5/12/13/14/15/16
ESP-13		GPIO0/2/4/5/12/13/14/15/16