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World's thinnest programmable leather bracelet!

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Step 2: Building - this takes less than 20 minutes.

Picture of Building - this takes less than 20 minutes.
Remember to test your circuits often as you build, to minimize the cost of errors. The button-schemer comes pre-programmed with a "heartbeat" pattern that turns on all 5 lights in succession.

That said, sew down the + and - holes, leaving about 3 inches each to make into a "battery holder." Quickly use a bit of tape to connect the two strands of thread to the battery. You should see a flashing pattern. This must work before moving on.

 
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