Catch DTMF frequencies

[Mridul Agarwal]

Hi,

I want to ask that is there any means by which we can connect a telephone to a citcuit which uses DTMF frequencies as its input.

[Chester Anderson]

I am not able to get your question. A simple telephone already has a DTMF circuit?? Do you want a DTMF circuit that used telephone like circuitry??

[Mridul Agarwal]

Atash

I am making this project only but thing is I want to take matrix keypad as input

[Mridul Agarwal]

So tobin can I use same circuit as well as programme if I want car to be controlled with matrix keypad. You can see keypad in thread:-

http://www.engineersgarage.com/forums/avr/matrix-frequencies-0

[Mridul Agarwal]

So tobin can I use same circuit as well as programme if I want car to be controlled with matrix keypad. You can see keypad in thread:-

http://www.engineersgarage.com/forums/avr/matrix-frequencies-0

[Mridul Agarwal]

So Tobin can I use matrix keypad as input of circuit given by Altash

[Mridul Agarwal]

THanxxx Tobin for your help because it helped me change my project basic thing that is input device( I replaced mobile with matrix keypad).

[Mridul Agarwal]

Thanxx Alessandro you are the only one who correctly understood my question because I was confused that landline will work or not

[Author]

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