Hello all, and Happy Holidays,
I would like to build a simple DTMF decoder. Basically I want to use the audio output of an old 2 way radio to connect to a DTMF IC(Probably the 8870), and into some sort of binary decoder or the Arduino so I can get single outputs. I want this circuit to integrate into my home automation setup through my HAM repeater for when the internet is down, which happens a lot when the power goes out even though I have a backup generator. I have searched around and found some good info, but want to see what others have done. Thanks a bunch for the help....
I would like to build a simple DTMF decoder. Basically I want to use the audio output of an old 2 way radio to connect to a DTMF IC(Probably the 8870), and into some sort of binary decoder or the Arduino so I can get single outputs. I want this circuit to integrate into my home automation setup through my HAM repeater for when the internet is down, which happens a lot when the power goes out even though I have a backup generator. I have searched around and found some good info, but want to see what others have done. Thanks a bunch for the help....