🚗 Obstacle Avoiding Robot
A smart robotic car that avoids obstacles using an Arduino and sensors.
🔧 Components Required
| Component | Quantity |
|---|
| Arduino Uno | 1 |
| Ultrasonic Sensor (HC-SR04) | 1 |
| Servo Motor (SG90) | 1 |
| Motor Driver Module (L298N) | 1 |
| DC Motors (For Wheels) | 4 |
| Chassis with Wheels | 1 Set |
| 12V Battery Pack | 1 |
| Jumper Wires | As needed |
⚡ Wiring Connections
1️⃣ Ultrasonic Sensor to Arduino
| HC-SR04 Pin | Arduino Pin |
|---|
| VCC | 5V |
| GND | GND |
| TRIG | Digital Pin 9 |
| ECHO | Digital Pin 10 |
2️⃣ Servo Motor to Arduino
| Servo Pin | Arduino Pin |
|---|
| VCC | 5V |
| GND | GND |
| Signal | Digital Pin 6 |
3️⃣ Motor Driver (L298N) to Arduino
| L298N Pin | Arduino Pin |
|---|
| VCC | 12V Battery |
| GND | GND |
| IN1 | Digital Pin 5 |
| IN2 | Digital Pin 4 |
| IN3 | Digital Pin 3 |
| IN4 | Digital Pin 2 |
| ENA | PWM Pin 9 |
| ENB | PWM Pin 10 |
4️⃣ DC Motors to L298N
| Motor | L298N Output |
|---|
| Left Motor | OUT1 & OUT2 |
| Right Motor | OUT3 & OUT4 |
How It Works
The robot uses an ultrasonic sensor to detect obstacles in its path. The Arduino sends a trigger signal to the sensor, which then emits sound waves. The sensor calculates the distance to an obstacle by measuring how long it takes for the sound waves to return. If an obstacle is detected within a certain range, the Arduino controls the motor driver to stop the wheels and/or steer the robot away from the obstacle.
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