Having a safety back-up air supply has many advantages over a standard alternate air source. The most obvious is that it is a separate air supply and allows self rescue in an emergency out of air situation. We are taught to stay with our buddy so that in case of an emergency they are right there rea...

This book concentrates on how RobotBASIC programs can interface with a wide variety of off-the-shelf hardware. Many options will be explored including both serial and parallel ports and how a separate microcontroller can be used to handle the low-level I/O operations. You will even see how vision, s...

The 3rd Edition of "Cruising Starting from Scratch" has been updated with 2015 cruising tools. The book has helped many couples get ready for retirement when they decide to live the dream and cruise on a boat."Cruising - Starting from Scratch" covers the basics information needed in the Made Simple...