Arduino Based Bluetooth Voice-Controlled Robot Car and Obstacle Detector

A machine is required when humans would like to work in different environmental conditions, such as toxic material, remote handling of bombs, health conditions, and sewage treatment. The paper aims to build a robot car that monitors the human voice's movement and senses distant objects. The L298N board, HC-05, Arduino Uno microcontroller, ultrasonic sensor, battery, and jumping wires are included in this system. The robot movement and control system is used by the speaker to allow the robot to react to any speaker command that gives any verbal instruction that produces sound frequencies of the human voice. Through the software application, the user of a robotic car will choose the route or path to control the movement of the car. The user can monitor the robot's movements on his own smart device and allow the car to drive in his own way. In this method, a microcontroller with android devices is linked through a bluetooth module to receive desired voice commands. The robot then escapes obstacles and detects distant objects. The android application that is used to convert a voice to a text command and then transmit data to a microcontroller moves the robot via a voice application according to the user's command. After receiving the command, the robot moves in left, right, forward, and backward directions. This device tried to alert workers to the possibility of a terrorist attack in a military camp.