ELI5: Explain Like I'm 5

Arduino

An Arduino is an electronic device that people use to create things that interact with the world around them. It's kind of like a super simple computer! You can use it to turn things on and off, measure temperatures, check pressure, count things, and even create your own games. You connect special pieces together, like wires, sensors, screens and lights, and then write programs, called sketches, to make the pieces do whatever you want them to.