Raspberry Pi is a minicomputer meant to control and monitor the outside world. It is what physical computing has to offer to the world. Python programming is the backbone of these devices thus they are able to interpret their environments well. One of the Raspberry Pi’s powerful features is the GPIO pins line along the board’s top edge. GPIO stands for General-Purpose Input/Output. Such pins are a direct interface from the Raspberry Pi to the outside world. The Pi can power LEDs and turn them on or off.

The Raspberry Pi LEDs come in different models. This is as a result of the dynamic technology and the need to solve problems of different kinds, more desire for device performance and speed. According to their led these are the main models