anne-clock

The Display

https://www.uperfectmonitor.com/products/raspberry-pi-case-with-screen

RPi fits inside. 10.1 inch HDMI with sound. 1280x800 pixels.

The touch screen works right out of the box. No configuration to do.

Audio

I disabled the onboard headphone jack so that the HDMI output was the only option.

https://www.instructables.com/Disable-the-Built-in-Sound-Card-of-Raspberry-Pi/

cd /etc/modprobe.d
vi alsa-blacklist.conf # This is creating the file

blacklist snd_bcm2835

And reboot.

Auto-starting the Python Server

Note the "sudo" here; the server runs as root.

sudo python3 -m pip install aiohttp

Drop the anneclock directory in the pi home directory.

Create ONBOOT.sh with the following:

#!/bin/bash
rm -rf /home/pi/.cache/chromium
cd /home/pi/anneclock
python3 server.py

Don't forget chmod +x ONBOOT.sh.

Chromium Kiosk

Install unclutter to hide the mouse pointer:

sudo apt install unclutter

Use sudo raspi-config to configure boot to GUI and auto log in, and configure the display to "non blanking".

In the pi home directory, create kiosk.sh and make it executable:

#!/bin/bash

xset s noblank
xset s off
xset -dpms

unclutter -idle 0.5 -root &

sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' /home/pi/.config/chromium/Default/Preferences
sed -i 's/"exit_type":"Crashed"/"exit_type":"Normal"/' /home/pi/.config/chromium/Default/Preferences

/usr/bin/chromium-browser --noerrdialogs --disable-infobars --kiosk --autoplay-policy=no-user-gesture-required http://localhost:8080/index.html

Create the systemd service file:

sudo vi /lib/systemd/system/kiosk.service

With this content:

[Unit]
Description=Chromium Kiosk
Wants=graphical.target
After=graphical.target

[Service]
Environment=DISPLAY=:0.0
Environment=XAUTHORITY=/home/pi/.Xauthority
Type=simple
ExecStart=/bin/bash /home/pi/kiosk.sh
Restart=on-abort
User=pi
Group=pi

[Install]
WantedBy=graphical.target

Enable the service:

sudo systemctl enable kiosk.service

Reboot or use sudo systemctl start kiosk.service to start (stop to stop).

Configuration menu: