> Are there any texts available on the design of electronics for high-G > environments? I'd be interested for my rocket timer project.. The board I'd > developing for that purpose will be mounted along the axis of acceleration > so flex isn't the problem, just the weight of the components. I am speaking only as someone who was marginally involved, not as a real designer. But I would expect that a model rocket will not reach the noise levels of a shuttle, and the size of the board is much smaller, so vibration will be less of a problem. But I would still feel uneasy with crystals and even resonators. With the board along the acceleration Axis I would go for SMD whenever possible. Mount non-SMD in the accelaration direction. Worry about the heaviest components first. What about the battery? Spring clips would seem a very bad idea. Wouter van Ooijen -- Van Ooijen Technische Informatica: http://www.voti.nl Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics