As I start this series of posts, I will try to keep it to the point. However this post is more of an extension of my introduction, please be patient. What follows will help everything else make sense.
As mentioned in my “introduceyourself” I am an electrician. In the early 90’s I wired a custom home for a guy who wanted his house pre-wired for, as he put it, “ easy computer interface”. What that ended up meaning was that every receptacle and every light outlet had a separate wire ran back to a very large junction box next to the electrical panel. In the future he would add the necessary hardware and software to make it all work. That was my introduction to the idea of home automation.
In the late 90’s I switched from a construction electrician, to a facilities maintenance electrician. At work I saw computers running all kinds of things, fire alarm, security, heating and cooling systems. Blood analyzers, kitchen equiptment, and a massive incinerator. You name it and to one extent or another there was a computer or a programable controller running it. So I began to wonder how I could harness that power to do stage lighting for my church. The best I could do was to use stuff I already had. Model railroad control switches, 24 volt latching relays and porcelain light bulb holders. I had all the other odds and ends needed except colored light bulbs. My solution was 100 watt bulbs. Home Depot sold G.E. 4 packs for $0.99. I then painted them with automobile high temperature engine paint. Color choice was limited, but there was enough to make the band look good. FYI, 100 watt light bulbs get hotter than car engines. After a few of these events, the primitive controller became obsolete. For the “Steak and Motor Show”, I had to create two drag-racing christmas trees.
One for each side of the outdoor stage. Now, I’m pretty good, but there was no way I was going to be able to run stage lighting and manually turn switches on and off, in the proper sequence, with the appropriate timing, to simulate a christmas tree. With some googling I found Weeder Technologies. http://www.weedtech.com/digital-io.html. They offer addressable, stackable, RS-232 modules and free, easy to learn, Mod-Com software. I purchased two of the Digital I/O modules and wrote a couple of routines that gave me exactly what I needed.
With all of that being said, I can get to the point. As, necessity is the mother of invention, a call from my neighbor at 11pm stating “you know your garage door is open”, was the mother of my home automation project. That un-acceptable condition occurred after I remodel the kitchen. I used to be able see the garage door through the kitchen window,
