NodeMCU, is an open source networking platform. It uses Lua scripting
language programming. Allows developers to deal with the underlying
hardware in a manner similar to For Arduino, so that software developers
can easily operate hardware devices

Features:

The Development Kit based on ESP8266, integates GPIO, PWM, IIC, 1-Wire and ADC all in one board.
Power your development in the fastest way combining with NodeMCU Firmware!
USB-TTL included, plug&play
10 GPIO, every GPIO can be PWM, I2C, 1-wire
FCC CERTIFIED WI-FI module, PCB antenna
Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled


Ardui-no-like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
Code like ardui-no, but interactively in Lua script.


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