Hey guys, New to Arduino but not to programming. My friend and I have been tasked with a project and we're thinking Arduino is the best way to tackle it but we don't know exactly how. What the client wants is essentially a phone that when they dial certain numbers, it plays a sound. For instance th…

Phone Project

terryking228 January 6, 2013, 2:21am 5

This decodes TouchTone DTMF (Dual-tone multi-frequency signaling) signals without an external decoder chip.

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