User Manual

13
Introduction to Raspberry Pi
Before starting to learn the commands, you first need to know more about the pins of the
RPi, which is key to the subsequent study.
There are several models of Raspberry Pi. To know some information about them, both the
Raspberry Pi Model B (R1) and Model B have 26 pins, when Model B+, 2 Model B, and 3
Model B have 40. This difference is vital when you have a Raspberry Pi and want to do
experiments or projects, but the related tutorials or materials are written based on a
specific board which is different from yours. For more, refer to the official website
www.raspberrypi.org.
We can easily lead out pins of the Raspberry Pi to breadboard by GPIO Extension Board to
avoid GPIO damage caused by frequent plugging in or out. This is our 40-pin GPIO
Extension Board and GPIO cable for Raspberry Pi model B+, 2 model B and 3 model B.
26-pin GPIO Extension Board and GPIO cable for Raspberry Pi model B and Raspberry Pi
model A.