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(click picture to enlarge)
diy k153
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DTMF Tone Grabber Kit
This
kit will detect DTMF tones from a telephone line or via an onboard
microphone and display them on a 16 character, single line display. Up
to 32 numbers can be displayed by scrolling the display left and right.
There is also a serial output for sending the detected tones to a PC.
The kit will not detect numbers dialed using pulse dialing - DIY Kit 53.
The
kit is controlled by an Atmel 89C2051 micro controller (source code not
supplied nor available).
Specifications:
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Mic or Phone Input via switch.
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Operating voltage 9-12VDC
(Need a Power Supply?)
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Displays up to 16 digits, stores up to 32
digits.
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Dimensions: 3-3/4"W x 2-1/4"L x
1"D.
See
CK0605.pdf for complete
details, including schematic and theory of operation. Requires
Adobe Acrobat Reader available at
www.adobe.com
for FREE!
DTMF.zip - This is a wav file
that plays the tones for all the keys on a touch tone telephone
pad. You can use this to test the CK605 by downloading,
uncompressing the file, and playing the .wav file. into the mic input on
the kit.
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