MT8870 DTMF Decoder with Phone Line Interface

[@DaveMcAnulty]

Even more impressive then the project is the video, loved having the walk through and assembly happen in parallel!

[@DevelopWithDan]

That is such a ridiculously cool project. Fantastic work

[@The_Nitek]

Awesome project! Would this also work with rotating dial pads?

[@GadgetReboot]

As long as there is audio with two present tones that match a defined DTMF pair of frequencies, they will be decoded.

[@TheUnofficialMaker]

dont think so, rotary dial uses pulses, not tones.