Make: Volume 56

It doesn't take a fully-stocked laboratory to perform biological scientific experiments. Make: Volume 56 shows you how to make electricity using everyday mud, extract DNA with a 3D-printed centrifuge, and isolate fruit DNA in your cocktails. Plus learn about one group hacking medical devices for real time diabetes data and another that's trying to open source life-saving insulin. Plus, more than 18 projects, including: Make a teeny-tiny FM transmitter spy bug Build a retro-style cell phone with the cutting-edge Adafruit Feather Fona Learn to make your own fasteners by tapping and threading