Our Blog: basysKom, Qt, Cloud, IoT, open62541, OPC UA, HMI Development and more.

WEINIG, basysKom und OPC UA
basysKom
Frank Meerkötter

Customer Showcase: OPC UA@Weinig

basysKom supported the WEINIG Group during the development and implementation of the WWCS while using OPC UA and the open62541 stack: a customer showcase.

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Qt
QML
Jeremias Bosch

Speedup your Qt/QML list scrolling on lowend devices

Something that has traditionally been complicated to achieve in Qt/QML, especially on low end hardware, is high performant list scrolling with complex delegates.
This has recently changed. In Qt 5.15, it is as simple as setting the new QML ListView property called reuseItems to true. For more details, have a look at the documentation.
In this blog post, I will explain how you can implement this feature in Qt Versions prior to 5.15.

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Qt OPC UA
open62541
Frank Meerkötter

Qt OPC UA updates

The Qt OPC UA module has been ported to CMake and will be part of Qt 6 right from the first release.
In addition to numerous bug fixes and improved test coverage, the open62541 plugin has been updated to open62541 v1.1 and uses OpenSSL for security support, thus removing the dependency on mbedTLS.

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Blog 1 basysKom, HMI Dienstleistung, Qt, Cloud, Azure
open62541
Jannis Völker

Support for PEM in the open62541 OpenSSL plugin

basysKom recently extended this plugin to also accept PEM-based input. PEM is a file format used for certificates and keys which is specified by an RFC and is a preferred format for a lot of open source software. The pull request has been merged and our contribution is available from the 1.1 branch (and will also hit the master branch soon).

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open62541
Azure
Jannis Völker

Connect OPC UA with open62541 to MS Azure IoT Hub

The open62541 OPC UA stack with its Pub-Sub extension now supports MQTT over TLS as well as MQTT-brokers requiring a login (contributed by basysKom). This allows the direct communication between open62541 and the Azure IoT Hub and therefore highly simplifies the connection of OPC UA based IoT Devices to the cloud.

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