Introduction
This is a guide for cross-compiling Qt 5.15.2 for Raspberry Pi 4 and installing it on Compute Module 4. It is an update to my blog post...
Blog
HMI
by Walter Prechtl last updated 20. January 2021
Introduction
This is a guide for configuring Qt Creator in order to be able to use cross-compiled Qt libraries for the Raspberry Pi 4 and create applications for the Raspberry.
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HMI
by Walter Prechtl last updated 20. January 2021
In this blog, I would like to provide a small Qt-Quick application (qml) as an example for a Modbus connection via TCP/IP.
In the Qt examples, I only found QWidget examples for Modbus...
HMI
by Walter Prechtl last updated 20. January 2021
Introduction
This is a guide for installing Raspberry Pi OS Lite on the Compute Module 4. For my working computer, I use Ubuntu 20, installed on a virtual machine.
Sources...
HMI
by Walter Prechtl last updated 20. January 2021
Qt is often used to develop graphic interfaces. Qt contains C ++ libraries for creating graphical interfaces that can be...
HMI
by Walter Prechtl last updated 12. December 2020
You can also use the Raspberry Pi 4's USB-C interface, which is normally used to provide a power supply, as a normal USB interface. However, in that case, the Raspberry should supply power via the...
HMI
by Walter Prechtl last updated 26. November 2020
Frequent writing or overwriting of data negatively affects the lifespan of an SD card.
For applications that often use temporary data (e.g., sensor values for comparative calculations)...
HMI
by Walter Prechtl last updated 24. November 2020
The aim was to write a Qt application for the Raspberry Pi 4 with which you can switch between different WLAN access points and save the associated credentials. As a starting point, I used a...
HMI
by Walter Prechtl last updated 21. November 2020
I recently 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 also had to be rotated 90...
HMI
by Walter Prechtl last updated 16. November 2020
If you have created a Qt application – or any other application – for the Raspberry Pi 4, you will very often want to have the application called up immediately after the Raspberry is restarted,...