May 2014
Intermediate to advanced
400 pages
8h 42m
English
Content preview from Make: Sensors
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Chapter 6. Movement
Automatic garden lights detect the moving heat radiated by humans. Joysticks convert motion to a change in resistance. A volume knob is a potentiometer, another kind of variable resistor.
Experiment: Which Way Is Up? (Tilt Ball Switch)
If you decide to build a pinball machine, you might want to detect excessive nudging and end the player’s turn with a TILT alarm. Also, a burglar alarm could use a tilt sensor.
Figure 6-1. Tilt ball switch
Tilt Sensor Code ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.