The ESP8266 is a chip that turned a lot of heads recently, stuffing a WiFi radio, TCP/IP stack, and all the required bits to get a microcontroller on the Internet into a tiny, $5 module. It’s an ...

Most of the WiFi functions work just like the WiFi shield library. There are a few things that aren’t written yet; PWM doesn’t work, as the ESP8266 only has one hardware PWM source.

According to I Programmer, the on-board Espressif ESP8266 Wi-Fi chipset adds about $2 to the cost of manufacturing the device.