The hardware setup mainly consists of an AT Mega 328 micro controller which is seated on a custom designed PCB board, soldered by me. The custom PCB board mainly consists of a bunch of relays (12V,7A) for controlling each of the individual functions, a relay driver , crystal oscillators , etc. The lines from the switch board are taken out and fed into these relays. Next comes the voice recognizer module seated below the custom PCB board, it communicates serially with the micro controller. Then comes the speaker amplifier unit used for amplifying the speech signals from the module , that is to be given to the speaker box as shown in the 1st pic.The custom PCB board is as shown:
The applications and advantages of this project are enormous, a few of them are:
1.Users are capable of communicating with the device naturally through speech.
2.Users are not required to reach the switch board and turn the switches on manually.
3.A person can use the device from anywhere in the room, by merely using these speech commands.
4.A wide variety of applications including the control of autonomous robots via voice commands.
5.Improved room security providing password protection feature for securing the room.
6.The system provides a vocal feedback to the user as well , to acknowledge the commands.
7.The system is capable of mocking a normal person to person communication
A video demonstration of the whole system is as shown: