This NodeMCU development board is the perfect backbone for any of your WiFi or wireless connected projects, integrating the ubiquitous ESP8266 WiFi module into its own board for the simplest integration into your devices. It lets you easily write your entire application on the device itself, or to offload the WiFi networking functions from your main microcontroller, and simply relay data to that other device.

Features:

Arduino-like hardware IO: Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware. Code like Arduino, but interactively in Lua script.

Nodejs style network API: Event-driven API for network applications, which facilitates developers writing code running on a 5mm*5mm sized MCU in Nodejs style. Greatly speed up your IOT application development process..

Lowest cost WI-FI: ESP8266 integrated in an easy-to-use development. NodeMCU provides the best platform for IOT application development at the lowest cost.

Specifications:
I/O: 10 GPIO Pins + micro-USB connection to PC
PWM Support: Yes, all 10 GPIO pins
Communication Protocol Support: I2C, 1-wire on all 10 GPIO Pins