Page 61 - Computing Book 8

Programming Robots and Single-Board Computers Class 8

Accessories Needed for the Raspberry Pi:

When you buy a Raspberry Pi board, you only get a bare electronic board that doesn’t do much on
its own. You need several accessories to get started.
There are a lot of accessories for the Raspberry Pi, but you need at least a microSD card and a power
supply. Without these accessories your Raspberry Pi is useless.
• Power Adapter- You’ll need one that provides 2.5 amperes and 5 volts.
• Micro SD Card- You’ll need one with at least 8GB storage, speed class 10.
You need a microSD card to store your files and the Pi’s operating system. The Pi
doesn’t have a hard drive, so everything you do on your Pi is saved on the microSD
card, even the operating system. You can get a microSD card with the operating
system preloaded or install the operating system yourself.
There are also useful accessories you may consider important such as an HDMI cable to connect an
LCD. A spare mouse and keyboard can also be useful to set your Raspberry Pi as a desktop computer.
Raspberry Pi Architecture:

The Raspberry Pi has an ARM Architecture based Processor. With a high-speed processor and 1 GB
RAM, the PI can be used for many demanding projects like digital image processing and many IoT
and connected projects. The Raspberry Pi also consists of a set of pins that allow it to communicate
with other nearby electronic devices.
General Purpose Input Output (GPIO):

A powerful feature of Raspberry Pi is
the set of GPIO pins along the top
edge of the board. GPIO pins allow
the Raspberry pi to be configured
for different purposes, interact with
different circuits, and work with
several types of electronic
components, for example, sensors,
motors, LEDs, switches, etc. GPIO
pins can simply be used to turn
devices on and off.
The image on the right provides an
understanding of the pinout
labelling. Raspberry Pi pins are
labelled in two ways, i.e. the GPIO
pinout labelling and Physical pin
labelling. The physical pin labelling is From this point onwards always refer to this configuration of GPIO
starting from 1 and ending on 40 in
the image.
Ports:

• Raspberry Pi is equipped with four USB 2.0 ports and one LAN Port.
• USB ports allow USB devices to be connected together and transfer data over a USB Cable.
• The LAN port allows the raspberry pi to connect to a network using a wired connection.

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