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Embedded Software
The goal was to write a Qt application for the Raspberry Pi 4 that can be used to switch between different WLAN access points and store the associated credentials.
I used a raspbian-buster-lite image and a Qt installation as described in Qt on the Raspberry Pi 4 as a starting point.
In addition, I…
Embedded Software
The task was to write a Qt Quick application (GUI) to upload new firmware to a touch controller.
The upload software was provided by the manufacturer in a .exe application that loads a .bin file onto the touch controller.
I wanted to use the Qt classes "QProcess", which can be used to call and…
Embedded Software
If you have created a Qt application - or any other application - for the Raspberry Pi 4, you often want the application to be called immediately after restarting the Raspberry after the application has been completed.
This is often attempted with start scripts that can be entered in various places…
Embedded Software
Due to the frequent writing or overwriting of data, the lifespan of an SD card is affected.
For example, it is recommended to write temporary data (e.g. sensor values for comparative calculations) to a RAM disk for applications that often contain temporary data (e.g. sensor values for comparative…
Embedded Software
Recently I had to develop an application (kiosk system) for/on a Raspberry Pi 4. The special thing about it was that 2 touch monitors were to be connected via HDMI, which had to be rotated 90 degrees to the right. So portrait formats, 2 monitors on top of each other.
Rotating the screen and…
Embedded HMI
The population is getting older and the standard of living is rising. This also increases the demand for medical technology services, especially in old age. And because mobility is becoming more and more important in our everyday lives, the demand for touch solutions such as touchscreens, mobile…
Industrial Monitor
In the September issue of the magazine "Surface and Coatings Technology" (Volume 324, 15 September 2017, Pages 201-207) you will soon be able to read the research report "Dual functionality anti-reflection and biocidal coatings".
Embedded HMI
Haptic technology is a form of force feedback used in computer input devices such as smartphones, in which the user receives information through vibrations and acoustic signals. Although it is becoming increasingly important in everyday life, it is not yet as widespread as one might think. However…
Embedded HMI
Once again, a team of researchers from Korea has succeeded in developing multi-touch sensors based on graphene electrodes. A detailed article on the research called "Graphene-Based Three-Dimensional Capacitive Touch Sensor for Wearable Electronics" can be found in the July issue of ACS Nano.
Extreme Temperature Monitor
TOPPAN FORMS CO., LTD., based in Tokyo (Japan), has recently developed a technology for the production of printed microwires that is suitable, for example, for use in touch sensor panels.
Transparent electrodes
The technology is a combination of conductive ink and a corresponding printing process…
Embedded HMI
In May 2017, analysts at Gartner Inc. again provided a report entitled Market Share Alert: Preliminary, Mobile Phones, Worldwide, 1Q17" and "Market Share: Final PCs, Ultramobiles andMobilePhones, All Countries, 1Q17 Update. This is primarily about the worldwide sale of smartphones to end consumers…
Embedded HMI
If you use HTML 5 for your products or services, you have the best prerequisites to meet user requirements than with any other technology. Because the boundary between desktop and tablets or smartphones is getting smaller and smaller. The user expects an application to work everywhere and to…
Touch Screen
It was not until 2004 that graphene, a transparent two-dimensional carbon allotrope, was discovered. It is a good conductor of electrical and thermal power and is known to be 200x stronger than steel. Important product properties are, for example, high electron mobility, permeability and heat…
Embedded HMI
According to Wikipedia, building a prototype is a method of software development. With it, you can quickly achieve initial results and receive early feedback on the suitability of a solution. The aim should be to identify problems and change requests at an early stage and to remedy them with less…
Embedded HMI
Only those who know the requirements, wishes or goals of their users can provide their users with a service or application that inspires. On the other hand, if you are not yet clear about the user requirements, you have to do user research or look for a partner who is familiar with the creation of…
Medical
While it used to be tedious to learn how to use the PC, today it is very easy with the help of touchscreen applications on tablet PCs and smartphones. Even for the older generation, dealing with a touchscreen application is no longer rocket science. This progress is also noticeable in the medical…
Embedded HMI
On the German statistics portal Statisica.com you can find a survey on the number of tablet users in Germany from 2010 to 2015 and forecasts up to 2020 (in millions). The portal bundles statistical data from various institutes and sources and provides concrete information as well as forecasts for…
Embedded HMI
The latest coup by the German carmaker BMW in the "motorcycle" sector is BMW Motorrad Concept Link. What resembles a scooter is actually the vision of the future of a new generation of motorcycles from BMW. Angular, angular and with electric drive.
Touch Screen
At the Hamburg Science Award, scientists or research groups working in Germany are awarded prize money of €100,000 if they are nominated for their achievements.
This year's award ceremony on the topic of "Energy Efficiency" will take place in November 2017. Xinliang Feng from the Center for…
Industrial Monitor
At the beginning of the year, the Finnish company "Canatu", in cooperation with "Faurecia", presented its transparent, flexible multi-touch interface for the first time as part of the Stuttgart innovation platform "Startup Autobahn". This is a technology program for company founders that is…