grader-display v0.7.0

Linux Install

• Ubuntu 18.04 Server LTS
  • Open SSH Server
• Install Plasma on Ubuntu 18.04 LTS

sudo apt install tasksel
sudo tasksel install kubuntu-desktop
sudo apt install sddm
sudo dpkg-reconfigure sddm
reboot

• Login as user created during Ubuntu install
• Reboot

Kiosk Setup

ssh to machine as user created above

ssh-copy-id <user>@<ip address>
ssh <user>@<ip address>

Add the following to the files listed below:

Auto login

sudo nano /etc/sddm.conf

[Autologin]
User=<user>

Auto start

Unclutter hides the mouse in the startup script

sudo apt-get install unclutter
nano ~/.config/autostart-scripts/startup

#!/bin/bash
~/tannery/grader-display &
unclutter -idle 3 &

chmod +x ~/.config/autostart-scripts/startup

Power saving options

nano ~/.config/powermanagementprofilesrc

[AC][DPMSControl]
idleTime=0

[AC][DimDisplay]
idleTime=0

[AC][SusoendSession]
idleTime=0
suspendType=0

Screen Locking

nano ~/.config/kscreenlockerrc

[Daemon]
Autolock=false

Hot Corners

nano ~/.config/kwinrc

[ElectricBorders]
Bottom=None
BottomLeft=None
BottomRight=None
Left=None
Right=None
Top=None
TopLeft=None
TopRight=None

Deploy App

Locally run the following

ssh <user>@<ip address> 'mkdir -p ~/tannery'
scp -r ./dist/linux-unpacked/* kiosk@192.168.5.170:~/tannery

##Reboot kiosk machine

If everything is good, electron app will start in fullscreen and should not be able to be exited via touch screen

Alt-F4 To exit

Auto Update

Auto Update Docs

public/electron.js

const { autoUpdater } = require('electron-updater')
app.on('ready', function() {
  autoUpdater.checkForUpdatesAndNotify()
})

package.json

"build": {
  "publish": [
    {
      "provider": "github",
      "owner": "nickvirtue",
      "repo": "testing"
    }
  ],
  "linux": {
    "target": [
      "AppImage"
    ]
},

Publish

export GH_TOKEN="<YOUR_TOKEN_HERE>"
yarn release

Message format

{
  "footwear": { "grade": "4th" },
  "grains": { "grade": "C2" },
  "upholstery": { "grade": "C2" },
  "skin": { "weight": "45.5", "scar": "true" }
}

Redis/Docker

Assuming docker is alerardy installed ###Start a new container running Redis

docker run -d -p 6379:6379 --name redis1 redis

Here we're giving it a name (redis1) and exposing port 6379 (the Redis default)

Check it's running with

docker ps

###Run the Redis CLI in the container We're going to start a new interactive session (-it) inside the running container, and use it to run redis-cli. We could run it directly, but for now, let's just start a shell with sh:

docker exec -it redis1 sh

And now we're attached to our container. Let's run redis-cli:

# redis-cli ###Try out some basic Redis commands

127.0.0.1:6379> ping
PONG

127.0.0.1:6379> PUBLISH "channel" "Message content......"
(integer) 1

127.0.0.1:6379> PUBLISH "news" '{"footwear": {"grade": "4th"}, "grains": {"grade": "C2"}, "upholstery": {"grade": "C2"}}'

(integer) 1

ping raspberrypi <-- get IP scp -P 4502 dist/Grader-Display-0.1.0-arm64.AppImage nick@192.168.5.191:~/