Today in this blog we will try to understand all the basic stuff about Nodemcu. After reading this full blog you can call yourself an intermediator MicroController expert. What is NodeMCU used for? NodeMCU is a less price hardware open-source platform. It originally included firmware running on ESP8266 Wi-Fi SoC from Espressif Systems and Hardware based on the ESP-12 module . Later, ESP32 32-bi t MCU support was added to make it better. NodeMCU is an open-source firmware in which the design of open-source boards is available for free of cost. The term "NodeMCU" includes "node" and "MCU" (sub-unit unit). The word "NodeMCU" which speaks strongly means firmware rather than compatible development kits/boards. [citation needed] Both firmware board and prototyping are open source resources. NodeMCU firmware uses the Lua script language. NodeMCU firmware is based on the Lua project and is built on the...