I´ll comment the video while looking…
Less than a minute in the video I see those damn wall boxes!! I hate them, hate them, hate them… Thats a very bad start! (sorry, internal joke. Stuart get it, (I hope )).
5:00 - Your desk and test setup looks like my desk, and almost the same test setup, except I have more mess and garbage laying around on my desk! I will not let you beat me on this one
9:00 - Why are the leds of both buttons (1 and 2) flashing when timer is running, when you only programmed button 2 for the timer?
Done watching - Great video… At least now anyone knows how to get started with Velbus. And it sure is easy, I can tell from my experience which was basicly none, untill I put my hands onto a small test setup as well. I did kinda cheat though… I´m educated eletrician, (back in the late 80´s). For a few decades I have been working with highly advanced automation and relay technique for the danish railroad and the interlocking systems. All I had to know is how to connect the bus, and program Velbus.
However, my suggestion… maybe for a “part before one” episode
I´ll suggest is to spend alittle more time on the wirering part, ending in a “real” fnished setup having one glas panel, one relay and wire a dimmer+bulb or whatever to the output, with special focus on the wirering from start till the end. Remember, those who look at your video maybe havn´t even tried wirering anything before. Some of that part probably calls for an electrician, (at least in Denmark it is, if the power is 230volt). So make sure to notice this as well. But I still believe you can show how easy it is, and how things makes sense when seeing the parts beeing wired all together, you push the button, and light turns on. Thats the real magic! The programming is the truth and therefore the borring part