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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