The Best of Thomas Scarborough

70+ projects, and many further circuit suggestions. Note that this book differs significantly from Books 1 to 3. Recently, many designs were released back to the author by publishers. Following the publication of Books 1 to 3, several people expressed a little disappointment that he did not release all available designs to the public. However, to rework the articles to a more or less professional standard seemed to be beyond the time he could devote to the task. He therefore decided to release the available designs "as is" -- that is, as he originally drafted them for publishers. He would view this book, therefore, as a stock of ideas. There is a great deal of variety in this book. Some recurring themes are metal detectors, conjuring tricks, security circuits, detection circuits, and novelty circuits. There is even a programmable robot.