CO2AS - CO2 Alarm System

The CO2AS device prototype is using Raspberry Pi Zero 2 W. Please follow these steps to prepare the working prototype device:

1.1. Install the latest "Raspberry Pi Imager" application

Windows: https://downloads.raspberrypi.org/imager/imager_latest.exe
Linux: https://downloads.raspberrypi.org/imager/imager_latest_amd64.deb
MacOS: https://downloads.raspberrypi.org/imager/imager_latest.dmg
Raspberry Pi OS, do this command on 'terminal': sudo apt install rpi-imager

1.2. Download the operating system for Raspberry Pi (Raspberry Pi OS) - legacy version ("Buster")

Direct download: https://downloads.raspberrypi.org/raspios_oldstable_armhf/images/raspios_oldstable_armhf-2022-01-28/2022-01-28-raspios-buster-armhf.zip
Torrent download: https://downloads.raspberrypi.org/raspios_oldstable_armhf/images/raspios_oldstable_armhf-2022-01-28/2022-01-28-raspios-buster-armhf.zip.torrent

1.3. Deploy ('burn') the legacy version of Raspberry Pi OS into a 32GB micro SD using Raspberry Pi Imager application

Extract (UnZip) the 2022-01-28-raspios-buster-armhf.zip file
Use 32GB Micro SD Class-10 (better using a High Endurance type; usually used for CCTV / live camera purposes)
Run the Raspberry Pi Imager application as administrator
Operating System > CHOOSE OS > Use custom > select 2022-01-28-raspios-buster-armhf.img file
SD Card > CHOOSE SD CARD > select SDHC SCSI Disk Device - 31.9 GB
Click WRITE and please wait until writing and verification process finish

1.4. Put the micro SD into micro SD slot in Raspberry Pi and turn it on

Prepare the Raspberry Pi Zero 2 W
Please use the 5V 3A power adapter with Micro USB connector
Plug in the "Mini HDMI to HDMI" converter into Raspberry Pi's HDMI port
Plug in the HDMI cable into "Mini HDMI to HDMI" and connect it to display monitor
Plug in the "Micro USB male to USB Type A female" into Raspberry Pi's Micro USB port
Plug in the USB Keyboard into "Micro USB male to USB Type A female" port
Plug in the power adapter to AC electrical socket

1.5. Configure the Raspbian OS

Choose the appropriate configuration for: setting country, location / region, language, keyboard layout, user password, etc
Connect to wireless network using WiFi to available Access Point
Activate SSH and VNC for easy access (so you can copy paste from other computer); select from start menu (Raspberry pi's logo at upper left screen) > Preferences > Raspberry Pi Configuration > Interfaces tab > enable SSH and VNC

1.6. Updating the Raspian OS

After connected to the internet using WiFi, using the "terminal" application give the following commands:

sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
sudo apt autoremove

1.17. Autostart the co2.sh script

mkdir /home/pi/.config/lxsession
mkdir /home/pi/.config/lxsession/LXDE-pi
sudo cp /etc/xdg/lxsession/LXDE-pi/autostart /home/pi/.config/lxsession/LXDE-pi/
sudo chown -R pi.pi .config/*

Add @bash /home/pi/CO2AS/co2.sh line at the end:

nano /home/pi/.config/lxsession/LXDE-pi/autostart

danito-net/CO2AS