DESIGN AND ANALYSIS OF VOICE CONTROLLED ROBOT

Robot voice has the ability to understand thousands of voice commands and perform required action. The voice recognition is a bit difficult task because each person has his own accent. By using the android app the textual content was transmitted to the Arduino using Bluetooth through mobile phone handsets which had built-in microphone process the signal and the robot made movement according to voice command The robot was able to move forward, backward, left and right according to the input given to L293D from Arduino Uno which gave input according to the command received from user. If user gave the voice command “autonomous” the robot started moving autonomously without hitting any obstacle. The avoidance of the obstacle was guided by the ultrasonic sensor which was able to senses the obstacle. Then it gave command to microcontroller to move in such a way so that the robot did not face any obstacle on its way.