How Haltu Oy has been using Django backend with admin tools to generate Qt QML UI for infoscreens, mobile devices and deliver those to independent displays remotely. Mobile Monday Tampere 3.2.2014 Presentation by our co-founder, CTO Ilkka Hakkari

1. Generating QML
with Django
Ilkka Hakkari

2. Requirements
Data visualization
Multiple physical locations
System has to be really fault-tolerant
Easy to customize per installation

3. System architecture
Data source
Screensyste
m
Screen
Screen
Embedded
Embedded
system
Embedded
system
Client
Admin UI
Package
Server
Builder
Admin Server
Database
Optional
Customer
specific
Qt
QML
Linux
Big touchscreens
Mobile Devices
Only source of .
deb packages
Compile
Build
Test
Package
Version mgmnt
Django stack
PostgreSQL
Library of QML
UI components

4. Cases
● Gate2Solutions
○ Infoboard system for Korkeasaari Zoo
○ http://www.gate2solutions.com/solutions/gate2zoo/
● Valmet Automotive
○ Real-time data visualization

5. Pros & Cons
Runtime simplicity
Automatic testing of the client
Drag’n’drop UI to create the end product
Fast development cycle
Development complexity