7 december 2021

[m431k3]

Update: the android app still doesn't work. Every time I implement something new, I have to learn a whole new set of classes. What the hell are classes, objects and instances anyway? Wish I could do this in C or something.

At least I'm making progress on my industrial automation project. Part of it concerns a machine vision application. Was given a license for Halcon with its somewhat user-unfriendly interface, tried to do it in OpenCV instead, got in a heated discussion with Visual Studio when I tried to install the libraries, went back to Halcon, remembered that the project had a bunch of requirements I never even looked at, heard that a classmate had figured out how to meet one of the requirements perfectly in Halcon.
The requirement? We have to use the OPC-UA protocol for transferring data. A PLCNext (like a PLC, but worse) acts as an OPC-UA server, so any external system should be a client. Luckily, Halcon has operators (functions or methods) to connect to an OPC-UA server. It worked in the end, but only if I turned off user authentication (removed all passwords and safety measures) on the PLC. So much for cybersecurity.