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Using the super cheap 433mhz wirelessly switchable power plugs using the raspberry pi is also super low cost, it's just not secure against tampering. https://blog.codecentric.de/en/2013/03/home-automation-with-... has some details.

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I have a good number of 433mhz switchable & dimmable outlets controlled by an Arduino with a 433mhz transmitter. It was a good weekend project that I am extending at the moment - including real world controls of my Sonos components (the Arduino talking to them via SOAP).

I've just ordered 10m of RGB LED strip, which is the next component I plan to control with an Arduino which will communicate with the first via an Ethernet shield and a protocol I am yet to devise!

Yes, all of this is fairly pointless but it's keeping my brain active whilst I recover from some fairly extensive surgery!

thanks for providing your link. very nice writeup but as i pointed out, 433mhz is not an option for me as i wanted to know if a set(..) really was working and 433mhz usually doesn't provide any return value.

seeing your post earlier would have saved me some effort getting into REST ;-)

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