System architecture answers the difficult questions with big impact early in product development. Which SoM comes with a CRA-compliant Linux? Which components should manufacturers develop themselves, which outsource and which buy off the shelf? Which team structure leads to an architecture for the system that is upgradable for the next 10-15 years? How can manufacturers save costs by reducing the number of embedded systems in their machines?
Which system-on-chip is best suited for your Qt embedded system? Should you build a custom Linux system with Yocto, use a container OS or a desktop Linux? Should you use Qt Commercial or Qt LGPLv3? How will the system be
"Complexity is anything related to the structure of a software system that makes it hard to understand and modify the system." John Ousterhout, The Philosophy of Software Design, Chapter 2 Complexity is also known as technical debt, which
I evaluated the dependency analyser CppDepend on a real-life embedded application. My goal was to find all dependency cycles between classes in the application. I know that the application contains 50+ dependency cycles. CppDepend only found less than 10% of
In the early days of controller area networks (CAN), every device manufacturer interpreted CAN frames in its own proprietary way. When you changed the engine of a harvester from Volvo to MAN, you would have to reimplement the communication with
Controller Area Networks (CANs, for short) are used for the communication between electronic control units (ECUs) in cars, trucks, tractors, harvesters, construction machines, packaging lines and e-bikes. Qt provides the Qt CAN Bus API as part of its QtSerialBus module.
In a recent blog post, I suggested to replace multiple display computers in a driver cabin by one computer in a silver box with multiple displays. I didn't specify which connectors and cables to use between computer and
The top row shows the status quo. Two or three display computers (a.k.a. terminals) are normal. Even four display computers are not unusual. The bottom row shows the cabin of the future with four display computers. The display
Agritechnica 2017 was my third visit after 2013 and 2015. My focus was on terminals (display computers) as usual. The standard terminal of 2017 is powered by a quad-core NXP i.MX6 processor (32-bit ARM Cortex-A9 with ARMv7a architecture) and
I am delighted that roughly 70 people attended my talk "Qt vs. Web - Total Cost of Ownership. Thanks a lot for coming and for the great questions! You can find the video of my talk here. Here are
Update: Since Qt 5.12, the QtQuick compiler has been available under LGPLv3. Even if you don't have a commercial Qt license, you will be able to enjoy a significantly faster startup of embedded QML applications. It is
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
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