An anonymous reader writes: A PCR machine is basically a copy machine for DNA. It is essential for most work with DNA, things like exposing fraud at a sushi restaurant, diagnosing diseases including HIV and H1N1, or exploring your own genome. The guy who discovered the PCR process earned a Nobel Prize in 1993, and OpenPCR is now the first open source PCR machine.
OpenPCR can be assembled with only a screwdriver, is controlled by an Arduino, and costs only $512. Traditional PCR machines cost thousands of dollars.