Touch screen kiosk with remote control web server, using blazor and net6.
UNDER DEVELOPMENT
TODO
- user/password authentication for setup screen
- home assistant integration (??)
Display when no Kiosk URL is defined yet:
When using the external setup URL (http://x.x.x.x:5000/setup, no password authentication YET!) you can enter the Kiosk URL and then either reboot or shutdown the raspberry pi.
The Kiosk URL is only shown after a reboot.
Touch Display 1920x515 (12.6 inch, IPS panel):
https://www.aliexpress.com/item/1005001966967133.html
Raspberry Pi Compute Module 4 (I only have the 8GB RAM / 16GB EMMC version)
The Waveshare CM4-NANO-B expansion board (also available on Amazon)
https://www.waveshare.com/wiki/CM4-NANO-B
The USB-C port is connected to the 5V power. (Also used to put the OS image onto the EMMC flash.)
The USB-A port is connected to the display. (To power it and also for the touch screen)
The HDMI port is connected to the display HDMI port.
Pressing the pushbutton (GPIO21) shuts down the CM4
I mainly used this document as a guideline: (note that for the CM4 it's not exactly the same)
https://gist.github.com/fjctp/210f4e870f913416b8d0e17fd36153c2
https://www.raspberrypi.com/documentation/computers/compute-module.html
Set boot switch to on, plug in usb-c
Download rpiboot_setup.exe, run rpiboot.exe
Also see waveshare CM4-NANO-B wiki page.
https://github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe
- Install raspberry pi os lite 32 bit
- Set up wifi
- Set up ssh
- Set up an account (The instructions and various configuration files assume pi/raspberry Adjust as required.)
After connecting via ssh :
sudo raspi-config
Select desktop/cli console auto login
sudo apt-get install -y --no-install-recommends xserver-xorg x11-xserver-utils xinit openbox
sudo apt-get install -y --no-install-recommends chromium-browser
dtoverlay=vc4-fkms-v3d # note that this was vc4-kms-v3d before !!!!!
hdmi_group=2
hdmi_mode=87
hdmi_cvt=1920 515 60 6 0 0 0
[cm4]
#otg_mode=1
dtoverlay=dwc2,dr_mode=host
dtoverlay=gpio-shutdown,gpio_pin=21
xset s off
xset s noblank
xset -dpms
setxkbmap -option terminate:ctrl_alt_bksp
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' ~/.config/chromium/'Local State'
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/; s/"exit_type":"[^"]\+"/"exit_type":"Normal"/' ~/.config/chromium/Default/Preferences
chromium-browser --noerrdialogs --disable-infobars --kiosk 'http://127.0.0.1:5000'
[[ -z $DISPLAY && $XDG_VTNR -eq 1 ]] && startx -- -nocursor
Copy all the web server application files and subdirectories to ~/kiosk-server
Make application runnable using :
sudo chmod +x ~/kiosk-server/kiosk-server
Install the application as a service (Adjust kiosk-server.service if user or directory is different) :
sudo systemctl stop kiosk-server
sudo cp ~/kiosk-server/kiosk-server.service /etc/systemd/system/kiosk-server.service
sudo systemctl daemon-reload
sudo systemctl enable kiosk-server
sudo systemctl start kiosk-server
Check if service is running ok :
sudo systemctl status kiosk-server
or
sudo journalctl -u kiosk-server
When using 'Publish' -> copies all files to ~/kiosk-server using pscp, that comes with putty
Adjust paths, ip address and password in .csproj file as required :
Target Name="PiCopy" AfterTargets="AfterPublish">
<Exec Command="pscp -r -pw raspberry C:\dotnet\projects\kiosk-server\kiosk-server\bin\Release\net6.0\publish\ pi@192.168.2.36:/home/pi/kiosk-server/" />
</Target>
Stop the web server, before updating the files :
sudo systemctl stop kiosk-server