NYC Hackathon DIY Current Sensors
Get some wire
get some ferrous, circular materials, I used the tops of pins
cut a small insicion in the side
cut out centers, they don’t have to be even
wrap the circles with a wire, about 60 turns each
get 6 resistors, I used 100k resistors
fold over their legs
and cut off the excess
solder two resistors to one end of the wire coil
you can wrap them around all sorts of things found around the house
attach a wire to each resistor and one to the other end of the wire
get an xbee and feed it 3.3v dc
NOTE! Do not cross power and ground cables on your circuit!
cuircuit graciously borrowed from: http://openenergymonitor.org/emon/node/28
put the pin into pin one on the xbee, one of the resistor wires to power, the other to ground
the other xbee will relay messages the internet
the arduino code can be downloaded here
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