This project is developed for the users to control appliances with very high security through voice commands. The user can control all the devices through voice commands.
When the user commands, the microphone receives the sound and sends to the PC. The PC generates a corresponding digital signal and sends through the serial port. If the voice command is not recognized, the PC does not respond.
The microcontroller receives the signal through RS 232 and sends signal to the driver section. This signal is thus used to drive a corresponding relay in the external electronic circuit. The relay is used as a switch to switch on or switch off the particular device. By this way the user can control any of the home appliance.
The design and port programs are written in Visual Basic. The Microcontroller program is written in assembly language. The microcontroller used is PIC 16F73.
This project gives high security so that un authorized users can not operate the particular device