Obstacle Detection System Using Ultrasonic Sensor
Welcome to this beginner-friendly tutorial by Madras Academy, where you'll build an Obstacle Detection System using the Ultrasonic Sensor and Arduino Mega. This project includes visual and audio alerts when an obstacle is detected, making it perfect for robots, vehicles, or autonomous systems. This hands-on project is ideal for students and enthusiasts who want to understand how sensors can be used for object detection, preparing you for robotics, automated vehicles, or security systems.
👉 Use the tabs below to navigate through the project:
- Project Info & Demo: Watch the finished result and learn what you’ll build.
- Wiring & Code: Get the circuit diagram, list of components, and the complete Arduino code.
- Notebook & Help: Access a printable project log and get troubleshooting tips.
Let’s detect those obstacles!
📌 Project Information
- Title: Obstacle Detection System Using Ultrasonic Sensor
- Difficulty: Medium
- Build Time: 20-30 minutes
- Skills Gained: Ultrasonic sensor interfacing, controlling alerts, basic robotics programming
🎬 Demo Video
Watch the project in action below:
🧰 Components List
Before diving into the wiring and code, let’s first review the essential components required for this project:
Essential components:
- Arduino Mega: The main microcontroller board that will process sensor data.
- Ultrasonic Sensor (HC-SR04): To measure the distance to the nearest object.
- Buzzer: To provide an audible alert when an obstacle is detected.
- Jumper Wires: For connections.
- Breadboard: To set up the circuit without soldering.
- USB Cable: To upload the code to the Arduino.
🔌 Circuit Diagram
Connect the DHT11 sensor to the Arduino Mega, ensuring the following connections:
📘 Project Notebook Template
Use this template to document your project:
- Project Title:
- Date:
- My Objective:
- Materials I Used:
- Circuit Diagram:
- Obstacle Distance Threshold:
- What I Learned:
- Challenges I Solved:
🛠Troubleshooting Tips
- ✅ Ensure the ultrasonic sensor’s trigger and echo pins are correctly connected.
- ✅ Test the buzzer independently to ensure it works.
- ✅ Check if the sensor’s distance measurements are consistent.
- ✅ Adjust the distance threshold in the code to fit your needs (e.g., trigger the alert at 10cm).
- Duration: 3 Days
- Total Lectures: 15
- Capacity: Max 50
- Difficulty Level: Advanced
- Medium of Instruction: English
Project Cost
₹1,500 ₹3,000
