Difference between revisions of "DTMF Decoder"

Latest revision as of 17:09, 4 April 2015

DTMF Decoder Breakout

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

Schematic

@@ Line 1: / Line 1: @@
 [[Category:Sheilds,Convertors,Breakout Boards]]
 '''DTMF Decoder Breakout'''
+[[File:Cart add.png|right|link=https://www.exploreembedded.com/product/DTMF%20Decoder]]
 [[File:DSC00756.JPG|x400px]]
 <gallery mode="packed">
@@ Line 7: / Line 8: @@
 File:DSC00763.JPG
 </gallery>
+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 [http://exploreembedded.com/product/Male%20to%20Male%203.5mm%20Cable the standard 3.5mm audio cable.] .
-[http://exploreembedded.com/wiki/images/b/b0/1ch_relay.pdf '''Schematic''']
+==='''Downloads'''===
+*[http://exploreembedded.com/wiki/images/e/e6/DTMF.pdf '''Schematic''']
+{{DISQUS}}