Getting Started with the Raspberry Pi

emil

9 years ago

Items Required:

Preparing the SD Card.

The first step in using the Raspberry Pi is preparing the SD Card. This begins by first downloading the latest operating system of your choice from the raspberry pi downloads page

For this tutorial we will be using the Raspbian image but the process is the same for all image files

On windows:

The software of choice for writing images on windows is win32 Disk Imager, the latest version can be downloaded from the sourceforge page. Once installed remember to run the software as administrator, if not you will get an error as follows

Image 1: Error Shown if win32 disk imager is not started with administrator privileges

Once the program is loaded with administrator privileges, load the image file and select the downloaded image and the drive in which the SD card is mounted. Once the required OS and device is selected just click on write and it will write the image onto the SD Card

Note: Select the correct drive as this is not reversible and you will loose all data on the selected drive

Image 2: Win32 Disk imager with image to be written selected

Image 3: Win32 Disk Imager with successful message

On Ubuntu:

Once the required image is downloaded we need to determine the device id of the memory card. This can be determined from the disks application.

sudo dd if=<location of image> of=<device location> bs=1M

Alternatively, the pv command can be used to track the progress. It can be installed by using the following command:

sudo apt install pv

pv -tpreb <location of image> | sudo dd of=<device location> bs=1M

Starting the Raspberry Pi for the first time.

Now that the SD Card is setup and inserted the microSD card into the Raspberry Pi, the next step is to power the Raspberry Pi. Selecting the appropriate power supply is extremely important as an improperly selected power supply can cause the raspberry pi to be unstable. Have a look at the below table for current requirements of the various models

Product	Recommended PSU current capacity	Maximum total USB peripheral current draw	Typical bare-board active current consumption
Raspberry Pi Model A	700mA	500mA	200mA
Raspberry Pi Model B	1.2A	500mA	500mA
Raspberry Pi Model A+	700mA	500mA	180mA
Raspberry Pi Model B+	1.8A	600mA/1.2A (switchable)	330mA
Raspberry Pi 2 Model B	1.8A	600mA/1.2A (switchable)
Raspberry Pi 3 Model B	2.5A	1.2A	~400mA

Table 1: Raspberry Pi Power Supply recommendations
Source: Raspberry Pi Foundation

By default the image written to disk will not consume the entire space on the SD Card, this can be fixed by using the raspberry pi config. Once the raspberry pi has successfully booted and you see the GUI screen.

Open terminal and type sudo raspi-config and you will see as below

As we are currently only interested in making sure that the entire SD Card is used, we will do just. Choose the Expand Filesystem and hit select and then reboot. The timezone and other options can also be changed depending on the requirements

Once completed click on OK to reboot and you are good to go