Raspberry Pi set up for development

I had a really old Raspberry Pi sitting around that I set up for development yesterday. The Pi 2 doesn't come with WiFi by default, so I set up a WiFi Adapter so it would be easier to develop on my localhost and ssh as necessary.

Environment:
Host: macOS Catalina
Raspberry Pi 2 Model B
Raspberry Pi USB WiFi Adapter (I have this one)
Raspberry Pi Camera Module V2

1. Install Raspberry Pi OS image on an SD card: I used Raspberry Pi Imager rbi-imager for macOS, chose Raspberry Pi OS (32-bit) -  https://www.raspberrypi.org/documentation/installation/installing-images/
2. If you plan to use the WiFi Adapter and Camera, connect those.
• Connect camera module
3. Boot into the Raspberry Pi and login
4. Connect any peripherals (monitor, keyboard, mouse)
5. Open terminal
6. Confirm the OS version. Mine is "Raspbian GNU/Linux 10 (buster)"

cat /etc/os-release

7. Update settings for US.  
• On the Welcome to Raspberry Pi screen
• Click Next
• Country: Choose United States
• Language: American English
• Time Zone: New York
• Enable Use English language and Use US keyboard
• Click Next
• Enter password
• I skipped the WiFi configuration screen since my SSID is not broadcasting so need to configure it manually
• This is an alternative way to do it via the command line.  Key thing is I needed for my keyboard to recognize the double-quote key

sudo raspi-config 
Choose Localisation Options 
Choose Change Locale => en_US.UTF-8 UTF-8 
Choose Change Keyboard Layout => Generic 101-key PC => Other => English (US) (Country of Origin) => English (US) (Keyboard layout) => The default for the keyboard layout => No compose key => 
Choose Change WLAN Country => US United States 
sudo reboot

8. Configure Raspberry Pi to connect to WiFi
   
   Backup file and copy to your home folder

   sudo cp /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.orig
   cp /etc/wpa_supplicant/wpa_supplicant.conf ~
   

   
   Add below to the end of the file. I had to add scan_ssid=1 because my SSID is not broadcasting.  NOTE:  If you have special characters in your password, e.g. double quote I didn't have to escape it but I had to add in key_mgmt=WPA-PSK config attribute (with no quotes).
   

   vi ~/wpa_supplicant.conf 
   
   network={ 
     ssid="<ssid>"
     psk="<secret password>"
     scan_ssid=1 
   } 
   

   
   Copy updated file back
   

   sudo cp ~/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf 
   

   
   Verify if the “inet addr” is available on wlan0
   

   ifconfig wlan0 
   

   
   If not, reboot to connect
   

   sudo reboot 
   

   
   On reboot, I can see it the IP address is XXX.XXX.XX.XXX”
   
   To verify internet connectivity perform a wget
   

   wget www.google.com
   

9. Enable ssh on Raspberry Pi

   sudo raspi-config 
   Choose Interface Options 
   Choose SSH => Yes 
   [Didn’t need to reboot]
   

10. Enable camera on Raspberry Pi

    sudo raspi-config 
    Choose Interface Options 
    Choose Camera => Yes 
    [Prompted to reboot] => Yes
    

11. Connect to Raspberry Pi via ssh from localhost, update macOS hosts file with Raspberry Pi IP
    

    sudo vi /private/etc/hosts 
    

    
    Added this to bottom of file
    

    # raspberry pi 
    XXX.XXX.XX.XXXX csrp
    

    
    ssh to the Raspberry Pi
    

    ssh pi@csrp
    

12. Verify camera works
• The Raspberry Pi captures video as raw H264 video stream

• raspistill -o ~/image-small.jpg -w 640 -h 480
  raspivid -o ~/video.h264 
  

• secure copy to and open it in macOS

• scp pi@csrp:/home/pi/image-small.jpg ~/Downloads
  scp pi@csrp:/home/pi/video.h264 ~/Downloads
  

13. Shutdown the Raspberry Pi
    

    sudo halt