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[[Category:Sheilds,Convertors,Breakout Boards]]
 
[[Category:Sheilds,Convertors,Breakout Boards]]
 
'''DTMF Decoder Breakout'''
 
'''DTMF Decoder Breakout'''
 
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[[File:Cart add.png|right|link=https://www.exploreembedded.com/product/DTMF%20Decoder]]
 
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The DTMF (Dual Tone Multiple Frequency) breakout boards decodes the key press from mobile phone to 4 digit binary code. If you've wondered how an IVR works when you call customer support, it uses an DTMF decoder. So whenever you press a key on your phone, it is decoded and it plays the pre-recorded messages.  It can be used to control devices, move robots from a distance.
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===Features===
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*Based on MT8870 or compatible decoder.
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*Works in differential mode
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*Indication LEDs for the binary output
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*Output pins taken out.
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===How to connect?===
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The board has a standard '''3.5mm''' audio jack with which you can connect to phone. You may buy [http://exploreembedded.com/product/Male%20to%20Male%203.5mm%20Cable the standard 3.5mm audio cable.] .
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==='''Downloads'''===
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*[http://exploreembedded.com/wiki/images/e/e6/DTMF.pdf '''Schematic''']
  
[http://exploreembedded.com/wiki/images/b/b0/1ch_relay.pdf '''Schematic''']
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{{DISQUS}}

Latest revision as of 17:09, 4 April 2015

DTMF Decoder Breakout

Cart add.png

DSC00756.JPG

The DTMF (Dual Tone Multiple Frequency) breakout boards decodes the key press from mobile phone to 4 digit binary code. If you've wondered how an IVR works when you call customer support, it uses an DTMF decoder. So whenever you press a key on your phone, it is decoded and it plays the pre-recorded messages. It can be used to control devices, move robots from a distance.

Features

  • Based on MT8870 or compatible decoder.
  • Works in differential mode
  • Indication LEDs for the binary output
  • Output pins taken out.

How to connect?

The board has a standard 3.5mm audio jack with which you can connect to phone. You may buy the standard 3.5mm audio cable. .


Downloads