Gordon McComb's Gadgeteer's Goldmine is one of the most exciting, well-rounded collections of electronic projects available anywhere, featuring experiments in everything from magnetic levitation and lasers to high-tech surveillance and digital commuications. Hobbyists and garage-shop tinkerers will find instructions for building such useful items as a fiberoptic communications link, portable He-Ne laser pistol, laser alarm system, ultrasonic pest deterrent, solar batter recharger, wireless sound transimitter. IBM PC control interface, and many others.