Designer Yuri Suzuki wants to help us understand how our gadgets work. To that end, he's worked with Technology Will Save Us to create the Denki Puzzle kit, a collection of printed circuit board pieces whose form indicate a particular function. Pin the pieces together as a sort of physical circuit diagram and you'll be able to build working electronics, like the working radio demonstrated at the London Design Museum. Here's a video describing Suzuki's inspirations, and his other projects as one of the Design Museum's current Designers in Residence.