The rear wheels are operated by 300 RPM motors. Front-wheel is a castor wheel that is guided by the motion of the rear wheels.

Assembly is fixed on a lightweight chassis.

Arduino UNO is used to operate the motors as per the feedback by HCSR-04 Ultrasonic distance sensors. Obstacles are detected by distance sensors and the program is preset into Arduino UNO to avoid any collisions.

HC-05 Bluetooth sensor is used to send Bluetooth signals to the mobile application and manually control the vehicle.

The image shows the internal assembly of the circuits used for the model. Arduino UNO and motors are powered by replaceable batteries. The motor controller and Bluetooth module are connected to the circuit as per the circuit diagram.