I was puzzling over tilt switches, which, in these mercury-free days, tend to be a ball bearing in a metal tube with a contact at one end. Tilting the tube lets the ball bearing roll down and short the contact to the tube wall. This arrangement is great if you want to make contact in ...
Read full article: Tilt switch contemplation
from Electronics Weekly http://www.electronicsweekly.com/blogs/engineer-in-wonderland/tilt-switch-contemplation-2016-10/
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