Pi setup

keyboard, hostname, username/password & wifi network

When you are starting up for the first time you need to set up a bunch of things. To keep things consistent please use this set up

• Select the US keyboard option

• Username: comp<Pi number> (eg: I am using Pi 16 so the username is comp16

• Password: comp<Pi number>

• The network to connect to is HVHS_COMP

• Password: RaspberryPi@hvhs2023

Post 1st boot

Note: In the below text, a dollar sign ($) indicates the start of a command, do not type the dollar sign, only what comes after.

We prefix the commands below with  sudo   to give us extra permissions but only whilst executing the command.

• Check the OS-Release file: $ cat /etc/os-release

• Update the packages: $ sudo apt update && sudo apt upgrade

• Install the stress-test package:  $ sudo apt install stress

• NOTE: ONLY DO THIS IF YOU WERE NOT INITIALLY ASKED TO CONNECT TO A WIFI NETWORK; Edit network config:     $ 

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

Network commands

• hostname -I # display the Pi's ip address

• iwconfig # lets see what WiFi we're connected to

• ifconfig # show all network interfaces

• ip addr # show IPv4 address

• ip route # show IPv4 gateway & routes

ssh

Browser Issues

• The default browser for the Pi is Chromium.

• Chromium by default uses the search engine; duckduckgo.

• If duckduckgo does not work, you can alter your browser settings to use another search engine - like Google. Just click the browsers settings options.

Performance specifications of components

Note 1: Actual speeds depend heavily on how you are reading  the data. For example; when reading data from a disk, speeds are far higher when you are reading adjacent blocks of data as opposed to reading the same amount of data if it is spread throughout a disk. However they do give an indication of relative speeds of the components.

Note 2: Device seeds are given MB/s or Mega Bytes per second, whilst  network speeds are given as Mb/s or Mega bits per second. You can convert Mb/s into MB/s by dividing by the Mb/s value by 8 (computers use 8-bits per byte)

• SD Card

  • • default card speed = 12.5MB/s

    • high speed card = 25MB/s

    • ultra high speed card = 80MB/s

• USB3

  • • 4.8GB/s

• PI 4 wifi

  • • 114Mb/s ==> 14MB/s

• PI 4 eth0

  • • 943Mb/s ==> 117MB/s

• Huawei router

  • • 5Ghz; upto 1300Mb/s ==> 162.5 MB/s

    • 2.4Ghz; upto 300Mb/s ==> 37.5MB/s

Huawei HG659b modem

Pi tutorials