At Qt Developer Days 2014 in San Francisco, I gave a talk with title “Case Study: Driver Terminal for Forage Harvester”. I describe the technical challenges and their solutions when I helped Krone to develop the driver terminal of their new BigX 480/580 forage harvesters with QML, Qt and C++. Here are the slides of...
HMIs of Agricultural Machines for 2016
The University of Osnabrück invited me to give a talk about “HMIs of Agricultural Machines for 2016” at their COALA Symposium “Assistance Systems and Human-Machine Communication in Agricultural Engineering on October 30, 2014. Here is the abstract of the talk.
Revolutionary HMI-Design of Forage Harvester
Agricultural OEM Krone bets on Qt software library for development of their terminal / First prototype read in less than three months 585 horsepower, 15.6 litres engine displacement and an up to 9 metre wide cutterhead – forage harvesters are among the most powerful agricultural machines. It takes a lot more technology and know-how to...
One Command To Install All Ubuntu Packages for Qt 5 Build
You have just installed a fresh Linux system. The next step is to build Qt from sources. You install the required Linux packages, configure and build Qt. After an hour or so, your build fails because a package is missing. You must start over again … and again … Wouldn’t it be nice to have...
Taming Bison When Building Qt 5.0.x on Ubuntu 14.04
When trying to build Qt 5.0.2 on my brand new Ubuntu 14.04 LTS system, the build failed with the following error message in the QtWebkit module: generated/glslang_tab.cpp:1785:30: error: too few arguments to function 'int yylex(YYSTYPE*, void*)'
Why Use Qt for Embedded Systems
When my customers develop embedded systems, they face similar challenges: Challenge 1: iPhone-Like HMI Challenge 2: Internet-Connected Challenge 3: Running Everywhere Challenge 4: Fast Time-To-Market Using examples from different industries, I’ll first elaborate on the challenges and then on how Qt can help us to solve these challenges. These challenges are typical for nearly every...
Two Agricultural Tidbits from Embedded World 2014
When roaming the halls of Embedded World 2014, I stumbled over two agricultural tidbits: one about Fendt and one about Agrifac.
HMI Trends from Agritechnica 2013
At this year’s Agritechnica, I had a close look at the HMIs of the tractors and self-propelled harvesters of CLAAS, AGCO (Fendt and Massey Ferguson), John Deere, New Holland and some others. My focus was on the UI software running on driver and auxiliary terminals. I think that these HMIs have a lot of catching...
My Talk “Practical QML” at Qt Developer Days 2013
My talk “Practical QML” at Qt Developers Days in Berlin and San Francisco was pretty popular: about 70 attendees at each location. Thank you very much for your interest and your great questions! The main topic was key navigation with QML. Side topics were changing languages and themes dynamically. Here are my slides and the...
Casting a negative float to an unsigned int
… is a very bad idea. The result of the cast differs depending on whether the cast is executed on a device with Intel or ARM architecture. The C++ Standard decrees that the result of such a cast is undefined.