jogi-k / infoscreen

Some snippets / tools for my home info-screen on a Raspberry Pi

InfoScreen

Some snippets / tools for my home info-screen on a Raspberry Pi

Information coming from following blog-post:
https://tangielskyblog.wordpress.com/2018/05/19/ein-ausschalter-fuer-das-raspberry-pi-display/

Switch OFF Display

echo 1 | sudo tee /sys/class/backlight/rpi_backlight/bl_power > /dev/null

Switch ON Display

echo 0 | sudo tee /sys/class/backlight/rpi_backlight/bl_power > /dev/null

Switch TABS in Chromium

see : https://blog.gordonturner.com/2019/07/23/raspberry-pi-switch-chromium-browser-tabs/

General Info

• Some more general info also available here:
• https://www.elektronik-kompendium.de/sites/raspberry-pi/2111101.htm

The Hardware, as of now

The PIR-Module (from Bastelgarage)

Installation

1. Install Raspberry-Pi OS
2. Install clutter : sudp apt install unclutter
3. Install chromium : sudo apt install chromium
4. Install xdotool : sudo apt install xdotool
5. clone this repo
6. copy the file preparation/backlight-permission-rules to /etc/udev/rules.d/backlight-permission-rules , this allows non-root-users to control the backlight of the display (see also https://linustechtips.com/topic/1246132-allow-non-root-user-to-access-sysclassbacklight/?do=findComment&comment=14015740 and https://linustechtips.com/topic/1246132-allow-non-root-user-to-access-sysclassbacklight/?do=findComment&comment=14015728 )
7. copy the file preparation/MyDashboard to /etc/init.d/.
8. execute sudo update-rc.d MyDashboard defaults this will activate the three simple python http-servers, responsible for weather and clock in bin/start_dashboard see therefore also : https://tutorials-raspberrypi.de/raspberry-pi-autostart-programm-skript/
9. copy the preparation/MyDashboard.desktop to ~/.config/autostart/. this is the second part of startup which then starts the dashboard - script in bin, doing the main-work