divera-monitor-pi0w

This tutorial sets up an always-on DIVERA monitor on Raspberry Pi Zero W. Due to only having 512 MB of RAM a Raspberry Pi Zero W is not really suitable to browse the web. That's why a setup as suggested here will most likely not work. Therefore, it is necessary to only setup the things that are really needed and e.g. do not use a full-blown Raspberry Pi OS with a desktop environment.

Step 1. Setup Raspberry Pi

• Use Raspberry Pi Imager to install 'Raspberry Pi OS Lite (Legacy)' on your SD card.
• Open the advanced settings:
  • Set a hostname for you pi
  • Enable SSH and set a username and a password
  • Optional, but prefered: configure WiFi (you could also do it in Step 2)
• Put the SD card into the pi and connect a display via HDMI.

Step 2. Adapt Rasberry Pi Configuration

• Connect to your pi via ssh with ssh pi@<your-hostname>.local
• Use sudo raspi-config and:
  • Activate Console Autologin (→ System Options → Boot Login)
  • Optional: configure WiFi settings
• Reboot with sudo reboot

Step 3. Install GUI and Chromium Browser

• Connect to your pi again via ssh with ssh pi@<your-hostname>.local
• Run ./setup.sh

Step 4. Edit Openbox (Window Manager) Autostart

• Edit the openbox autostart file via sudo nano /etc/xdg/openbox/autostart
  • Insert the content of the start-divera-monitor.sh file and save
• Edit the openbox environment file via sudo nano /etc/xdg/openbox/environment
  • Insert your URL as an environment variable like this: export MONITOR_URL=<your-url> and save

Step 5. Start X Server on Startup

• Create or edit your .bash_profile via sudo nano ~/.bash_profile
  • Add this line [[ -z $DISPLAY && $XDG_VTNR -eq 1 ]] && startx -- -nocursor and save
• Optional: to add a reboot every day use sudo crontab -e and add e.g. this line 0 6 * * * /sbin/shutdown -r now (restarts at 6 a.m. every day)
• Reboot with sudo reboot