Clone DNA with your Arduino
Instructables user staceyk documents an open source design for a Polymerase chain reaction (PCR) machine. Basically, PCR allows you to amplify and copy strands of DNA, and is used for applications like paternity testing and disease research.
The OpenPCR design features some beautiful laser-cutting as well as an open-source electronic design powered by an Arduino. The full build instructions are available, and it has also spawned a web shop where you can buy OpenPCR as a kit.
Nice work staceyk, and way to go for leading bio-hacking forward!