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Cool Touch notes – Quick Note on Touch Sensors — QT113/118

Here’s some cool quick notes on touch sensors QT113/118 for those of you trying to invent touch enabled systems.

I need a touch sensor for a couple of projects, and the Qprox QT113 seems to be the way to go, particularly for interfacing with an Atmel processor. It’s easy to work with, and hooks-up with only a bare minimum of extra stuff. All you need is a resistor and capacitor and a bit of wire or trace to compose the sensor.

Tom Igoe documents most of the deta

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