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!


Member Since: February 14, 2011

Country: United States

  • I’m definitely interested. I’ve used Jon Stanley’s design with great results, and have had a few requests to replicate the circuit.

No public wish lists :(