designing sleep monitors prototype 2

ePlease check out the first part of my sleep monitors series first.
Back in May 2011, unsatisfied with the "software" solution I developed with the first prototype, I started developing a "hardware" based solution to develop a contactless sleep actigraph monitor.

And that's what I came up with:

Under the mess of wires, there is an arduino controlling:
.an annoying buzzer for the alarm

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