Excellently overengineered bathroom occupancy sensor

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James made this possibly overdesigned system to monitor his office bathroom, using a BlinkyTape, Raspberry Pi, Spark Core, and a paperclip:

The idea is to show the status outside the outer door a few meters away with an “information radiator” to avoid a wasted trip and disturbing occupants by trying the handle. Yes, this could be achieved with some wire linking the switch directly to some LEDs but where’s the fun in that‽ In the spirit of the development team this needs to be massively over-engineered and the greatest amount of micro-processors and micro-controllers should be put between the switch and lamp as is unreasonably possible.

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