Password protected system using DTMF
Hello guys, this project is about password protected system using DTMF module. By using a predefined number we can make output either high or low by using the three digit code.
The codes can be changed in the program.
Components required:
Hello guys, this project is about password protected system using DTMF module. By using a predefined number we can make output either high or low by using the three digit code.
The codes can be changed in the program.
Components required:
- Atmega 16A
- USBasp programmer
- AVRdudes (for burning hex file)
- AVRStudio 4
- Compiler used: GCC
- DTMF module
- 3.5 mm audio jack
FOR OUTPUT LOW CODE IS str1="248"
FOR OUTPUT HIGH CODE IS str2="842"
Connections are as follows:
Q0-PD0
Q1-PD1
Q2-PD2
Q3-PD3
Output is from: PB0.
