WeMos D1 Mini WIFI Development Board ESP8266 are small, cheap, wifi ready micro-controllers. They have the ESP8266 wifi chips and (on the later models) have many GPIO pins broken out ready to use. WeMos D1 Mini WIFI Development Board ESP8266 come pre-flashed with a Lua based firmware and while I understand that Lua is easy enough to pick up I wanted to be able to develop in the Arduino IDE.Description:
The D1 mini is a mini wifi board based on ESP-8266EX.
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
1 analog input (3.3V max input)
A Micro USB connection