What is Node MCU

NodeMCU is an open-source hardware and software development environment built around the inexpensive ESP8266 Wi-Fi System-on-a-Chip (SoC). It's a popular choice for Internet of Things (IoT) projects due to its low cost and ease of use.Key features of NodeMCU:ESP8266 Wi-Fi chip: This provides built-in Wi-Fi connectivity for wireless communication.Lua scripting language: NodeMCU uses Lua for programming, which is a lightweight and easy-to-learn language.Open-source firmware: The firmware is freely available, allowing for customization and development.GPIO pins: These pins can be used...