In this project,
we will interface
a DTMF Decoder
with AVR ATmega16
microcontroller
and LED display.
Here, we will find
the value of the
key pressed i
(more)
In this project, we will interface a DTMF Decoder with AVR ATmega16 microcontroller and LED display. Here, we will find the value of the key pressed in a mobile through DTMF Decoder and we will display the value of the pressed key in a 1X8 LED array. In this project, we will use two mobiles, one will be connected with the DTMF circuit and another will be used to call the mobile attached with DTMF circuit. The Mobile attached with DTMF circuit will be kept in auto-answering mode. The DTMF decoder can decode DTMF signal of both mobiles. The user will press different keys of the mobile attached with the DTMF circuit and the DTMF Decoder will decode the DTMF signal of mobile. After decoding the DTMF signal, the DTMF decoder will output a 4-bit value. AVR ATmega16 microcontroller will read this 4-bit output of DTMF decoder and will process it to find the value of the pressed key. After processing the DTMF output, the microcontroller will display the value of the pressed key in the 1X8 LED array. Now, we will press...
