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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Senor Meow

Member Since: July 7, 2008

Country: United States

  • I discovered this same thing. It would only start harvesting if I had at least 5v DC or 10v peak to peak AC in its stock jumper configuration. My piezo would have to really vibrate to get that high at the given input impedance.

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