I'm a newbie to Electronics/ Robotics, but I love to do it as a hobby.

So I want to build a circuit (a really small in size would be much better) with a motion sensor that can communicate data (Basically when it sense a motion send a signal) to my computer over Wifi. Is this something possible? If so how do I do it, may be a schematics diagram, or someway to start the project would be a grate help.

Thank you!!

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    $\begingroup$ How small is small? Easiest is get a board with a CPU and Wifi and hook it to your sensor. $\endgroup$ – Guy Sirton Jul 17 '13 at 2:47
  • $\begingroup$ Yes thats would be an option too, but I'm looking for some sort of a circuit, that just do the exact job. If I get something like RPI to do this, I reckon thats waste of resources $\endgroup$ – Thanu Jul 17 '13 at 3:40
  • $\begingroup$ The thing to keep in mind is that WiFi protocols are kind of complex and so you'll almost certainly need a CPU in there to handle this. That doesn't preclude miniaturization but it'll be a bigger challenge if you don't want to use an available board. $\endgroup$ – Guy Sirton Jul 17 '13 at 4:27
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    $\begingroup$ The only board I've personally used that had WiFi was the PandaBoard... I'm sure Google can find lots of other options. This seems to be an interesting option: electricimp.com $\endgroup$ – Guy Sirton Jul 17 '13 at 5:25
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    $\begingroup$ Two things: 1.) Is this a robotics question? Or would EE and maybe SE be more appropriate? 2.) I would personally use Arduino and add use this tutorial. $\endgroup$ – Anonymous Penguin Jul 17 '13 at 14:12