[Peter Jansen] is the creator of the Open Source Tricorder. He built a very small device meant to measure everything, much like the palm-sized science gadget in Star Trek. [Peter] has built an MRI machine that fits on a desktop, and a CT scanner made out of laser- cut plywood. Needless to say, [Peter] is all about…

via Imaging Magnetism With A Hall Effect Camera — Hackaday