Next we cut out a little circle of conductive fabric and split it in two and sewed them onto the left shoulder blade. We took conductive thread, sewed it into the VBATT hole, and connected it to one of the conductive fabric circle halves. We then sewed a new piece of conductive thread from the unused half circle, and connected it through all of the positive ends of the LED lights.
By interrupting the circuit using the conductive fabric half circles, when someone wearing conductive thread on their right wrist, the circuit will complete when they put their arm around the person wearing the sweater.
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