In this video I explain the source code of a minimal OPC UA server from the open62541 project. Then I will expand the program to add a custom hostname or IP address and a custom port number. Here is a list of free and open source Software I use in this video or to make the video: - Virtualbox: https://www.virtualbox.org/ - i3wm (https://i3wm.org/) with i3blocks (https://github.com/vivien/i3blocks) - vim: https://www.vim.org/ - urxvt: http://software.schmorp.de/pkg/rxvt-unicode.html - gcc: https://gcc.gnu.org/ - SimpleScreenRecorder: https://www.maartenbaert.be/simplescreenrecorder/ - OpenShot: https://www.openshot.org/ - Firefox: https://www.mozilla.org/de/firefox/ - Zathura: https://pwmt.org/projects/zathura/