Every time I search with Google for an alternative for the not so cheap Wattcher
, I run into the page of the Tweet-a-Watt which apparently at some time was called Wattcher as well, http://www.ladyada.net/make/wattcher/
Unfortunately the Tweet-a-Watt is not what I am looking for. I am looking for a way to get (more or less) realtime info about the current powerusage in watts, like the Wattcher does, measured with the help of the powermeter. A meter similar to this (the left) one:
This so that I can see what the whole house is using and so that I can see almost right away how much the powerusage increases/decreases when I turn something on or off. I can get the Wattcher though, but paying €99 ($130) for that seems a lot for what you get. I don't think it's much more than a sensor, transmitter, receiver, micro controller, display and some resistors and capacitors. I doubt that costs that much, or am I wrong?
Anyway, is there someone who knows an alternative? It does not necessarily have to be ready to use, a kit is okay too :)