TTP223 Capacitive Touch Switches

Taking a look at some TTP223 capacitive touch switches available for dirt cheap from eBay.com: (affiliate link)
http://rover.ebay.com/rover/1/711-532...

or from eBay.ca (affiliate link)
http://rover.ebay.com/rover/1/706-534...

These premade modules have some great advantages over diy solutions and even physical switches, such as pre-debouncing, mode switching and logic low and high toggling. Right off the bat they even have roughly 0.1 inches of range as well....great stuff!

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