GPIO Extension BoardΒΆ

Before starting the project, you first need to know more about the pins of the Raspberry Pi, which is key to the build circuit.

The pins of Raspberry Pi have three ways to name them. They are wiringPi, BCM and Board. Among these naming conventions, the 40-pin GPIO Extension board uses the naming convention BCM.

The following table shows the naming convention for WiringPi, Board and the intrinsic Name of each pin on GPIO Extension board.

For example, for the GPIO17, the Board naming method of it is 11, the wiringPi naming method is 0, and the intrinsic naming method of it is GPIO0.


Connect the 40 pins of the Raspberry Pi to a breadboard according to the diagram below.