Hardware Reference
In-Depth Information
You can help your Pi by moving your devices to a self-powered USB hub (a hub that
has its own power supply).
Also note that the Pi is very sensitive to devices being inserted or removed while it's
running, and powering your Pi from another computer's USB port usually doesn't
work well.
SD card
The SD card is where all our data lives, and the Pi will not start without one inserted
into the slot. The Raspberry Pi Model A and B takes a standard-sized SD card while
the Model B+ uses the tiny Micro SD.
SD cards come with a wide variety of data storage capabilities. A card with a
minimum of 4 GB of storage space is recommended for the projects in this topic.
The SD cards also carry a class number that indicates the read/write speed of the
card—the higher the better.
Installing the Raspbian OS on the
SD card
Computers can't do anything useful without an operating system, and the Pi is no
exception. To help us add one, we'll be using the easy operating system installation
manager called New Out Of the Box Software ( NOOBS ). NOOBS will let us choose
from a growing list of operating systems available for the Pi, but we'll stick with the
officially recommended OS—the Raspbian GNU/Linux distribution.
Getting NOOBS
There are two main ways to obtain NOOBS. You can either buy it preinstalled on an
SD card from your Raspberry Pi dealer, or download NOOBS yourself and copy it to
an empty SD card on a computer with an SD card slot.
If you do have access to a computer but it lacks an SD card slot, it's a
wise choice to invest in an external SD card reader/writer. They don't
cost much and chances are you'll want to re-install or try a different
operating system on your SD card sooner or later.
 
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