Arduino is a small board with its own processor and memory. The board also has a couple of dozens of contacts to which you can connect all kinds of components: bulbs, sensors, motors, kettles, routers, magnetic door locks and in general, everything that works from electricity.

You can download a program that will control all these devices in the Arduino processor according to a given algorithm. In this way, you can create an infinite number of unique cool gadgets, made by your own hands and on your own idea.