The NodeMCU (Node MicroController Unit) is an open source software and hardware development environment that is built around a very inexpensive System-on-a-Chip (SoC) called the ESP8266. it is Low cost, Integrated support for WIFI network, Reduced size of the board, Low energy consumption device. with the help of NodeMCU we can develop Smallest IoT Home Automation using ESP8266, Geo location using ESP8266, We can build Wireless Web Server, control things via internet and so on lot many projects we can do with the help of NodeMCU. In this level we have covered more than 50 topics.