Course Content
1. Arduino UNO Board
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2. Ultrasonic Sensor (HC-SR04)
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3. Motor Driver Module (L293D or L298N)
A motor driver module is required because Arduino cannot directly supply enough current to run DC motors. The L293D or L298N motor driver acts as a bridge between Arduino and motors, enabling direction and speed control. It uses an H-Bridge circuit to allow motors to run forward, backward, or stop. In this project, Arduino sends control signals to the driver, which then powers the DC motors accordingly. Without the motor driver, the motors would not function properly. This component ensures safe operation by isolating Arduino from high motor currents while enabling full robot movement.
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4. DC Geared Motors
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5. Robot Chassis
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7. Jumper Wires
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8. Breadboard (Optional)
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9. Battery Holder / Power Supply
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Circuit Diagram
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Arduino Obstacle Avoiding Course

    The DC geared motors are responsible for moving the robot. These motors are coupled with gears that reduce speed but increase torque, providing enough power to move the chassis and wheels smoothly. The motors are connected to the motor driver, which controls their speed and direction based on Arduino’s commands. In the obstacle avoiding robot, the motors enable forward motion, turning left or right, and stopping when needed. Their compact size, durability, and efficiency make them perfect for small robotic applications like this kit. Two or four motors are typically used depending on the chassis design.