A new kit enables DIYers to easily integrate electronics into their projects – no custom batteries or soldering required. B-Squares, created by 2007 PM Breakthrough Award winner Shawn Frayne and fellow MIT graduate Jordan McRae, use magnets at each corner to connect the devices in any direction that tinkerers need to stack them. Available B-Squares include a microcomputer, an LED and a solar collector. A single Solar Square costs about R100; it’s R1 700 for a kit. – Amir Khan
Visit www.popularmechanics.co.za to view a video showing how B-Squares work.