Course Content
1. Arduino UNO Board
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What is Arduino UNO Board
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2. Ultrasonic Sensor (HC-SR04)
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What is Ultrasonic Sensor (HC-SR04)
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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What is Motor Driver Module (L293D or L298N)
4. DC Geared Motors
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What is DC Geared Motors
5. Robot Chassis
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What is Robot Chassis
6. Wheels
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Description about Wheels
7. Jumper Wires
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What is Jumper Wire
8. Breadboard (Optional)
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What is Breadboard ?
9. Battery Holder / Power Supply
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Battery details
Circuit Diagram
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Detailed circuit Diagram.
Working Code.
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Use This Code For The Projects.
Arduino Obstacle Avoiding Course

    The HC-SR04 ultrasonic sensor is used to measure distance by sending ultrasonic waves and calculating the time taken for the echo to return. It has a transmitter that emits sound pulses and a receiver that listens for the echo. Based on the time interval, the sensor calculates the distance to an object. In this project, the sensor is mounted at the front of the robot to detect obstacles. If the measured distance falls below a threshold, Arduino instructs the motors to stop or turn. This sensor is low-cost, highly reliable, and easy to integrate into robotics systems.

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