Saturday, 15 August 2015

DIY Altoid DTMF Encoder/Generator!

15:04  Telli k  No comments

We take it for granted in the modern age, but just a couple of decades ago (!), I still vividly remember using my rotary phone to dial out. Sometime in middle school, with the advent of three-way calling, our family switched over to a Touch-Tone phone. Replacing the familiar clicks were now DTMF f...
By: Tymkrs

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from Instructables: exploring - technology - robots http://ift.tt/1NjdNuH

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