You will need:
1) fabric (nylon, hard canvas or other durable fabric)
2) durable thread (denim, nylon, etc)
3) Nike+ sensor
4) Needle
5) Scissors
6) velcro (1 inch)
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Signing UpStep 1: Cut out
The cutout is pretty simple. Just follow these instructions and you'll have the right size for the Nike+ sensor




































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It appears to be a PICmicro with a transmitter chip, the sensing is done using a Peizo speaker as an impact sensor. They even have a connector board for the sensor (Ipod size).