Arduino projects involve creating interactive electronic devices using the Arduino platform, which consists of a microcontroller and an integrated development environment (IDE). These projects can range from simple tasks, like blinking an LED, to more complex systems, such as home automation or robotics. Many enthusiasts and beginners use Arduino to learn about programming and electronics. The platform supports various sensors, motors, and displays, allowing users to build custom applications. With a vast online community, resources, and tutorials, anyone can start experimenting with Arduino and bring their ideas to life.