DTMF Decoder Module For Raspberry Pi, Arduino, ARM, DSP, AVR, PIC, 8051

EnGeniusLab Introduces compact and highly readable DTMF Module stands out in the league of similar modules available in the electronics markets provide operates 5 to 9 V DC. It’s equally capable to both CDMA AND GSM handsets works fine with stereo/MONO. Every single data bit is provided with an on this board led indicator for quick visual confirmation. The momentary output LED bit is also provided with a bright white flash LED. When a valid DTMF tone is received as input the status led flashes and the corresponding 4 bit binary value is latched to the output pins D0, D1, D2 & D3 and then a status led blink.

The module is capable of providing 16 different outputs if the tones are fade thru a tone generation circuit or through PC based software ( the inputs being from 0-9 * # and A B C D ). Decodes DTMF audio signal to 4 bit binary TTL level output with LED indication. Suitable for use with microcontroller applications .However when operated through cellular phone device it can provide only 12 diff outputs because of 0-9 keyboard along with * and #.

Special Features:-
•Decodes DTMF as 4 bit binary
•TTL level output for direct connection to microcontrollers
•Low power 5V DC operation & Operating Current 100 mA
•LED indication of outputs
•Simple to use
•Based on excellent HT92B70 IC

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