... GasDetectorWe can easily go several hours without drinkingwater. We can comfortably go the better partof a day without eating food. But try and gomore than a few minutes without breathing.(No, don’t ... also powerful: despite its compact size, it has about as muchcomputing muscle as one of the original navigation computers from theApollo program, at about 1/35,000 the price.Programmers, designers, ... Arduino with differentelectronic components. Some of these manage the power and path of theelectricity, others sense certain conditions in the environment, and still oth-ers display output about...