A simple and easy capacitive sensing tutorial

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A simple and easy capacitive sensing tutorial
posted November 3 2010 13:44.46 by Giorgos Lazaridis

For many of us, capacitive sensing is kinda "space-technology". Looks like that Joby Taffey had something like this in his mind when he decided to use his capacitive sensor with his launchpad...

Joby used an aluminum foil as a capacitive sensor. The human body will change the capacitance value, and therefore the RC value will be changed. The microcontroller measures the time needed for the capacitor to be charged. If this time is different than a time standard, this means that the capacitance has change, possibly due to human presence. The complete article can be found in this link.

[Via: EE-Fail] [Link: EE-Fail]

Tags: electronic project capacitance sensor microcontroller arduino sensors

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