Obstacle Avoidance Car With Arduino - Full DIY Guide

Build an obstacle avoidance car that navigates autonomously. Learn the mechanics behind sensor integration and how to improve your robot design. This guide demonstrates how to construct an obstacle avoidance car from scratch, making it an ideal project for beginners interested in robotics. You will see the car in action, testing its ability to detect walls and navigate around them without human intervention. The focus is on the practical application of sensors and the logic required to make autonomous movement possible. Throughout the process, we examine whether adding multiple sensors enhances the performance of your obstacle avoidance car. By understanding the underlying science, you can troubleshoot common issues and refine the navigation algorithm. This project provides a clear path for anyone looking to advance their skills in diy robotics and sensor-based automation. If you want to master the basics of building an obstacle avoidance car, subscribe for weekly robotics tutorials and comment below with your next robot project idea. 📌 Components Used (Affiliate Links - Support the Channel) Arduino Nano 👉 https://amzn.to/4vvF1Yr Arduino Nano Shield 👉 https://amzn.to/4aaCBWE L298N Motor Driver 👉 https://amzn.to/4uWooUU HC-SR04 Ultrasonic Sensor 👉 https://amzn.to/4oUCiFE 4WD Smart Robot Chassis Kit 👉 https://amzn.to/4fQ6Ky6 SG90 Servo Motor 👉 https://amzn.to/4whMmuR 18650 Batteries (3pcs) 👉 https://amzn.to/3SAA2Hg Jumper Wires Kit 👉 https://amzn.to/4exgN8Z L7805 Voltage Regulator 👉 https://amzn.to/4ekwn9d Breadboard 👉 https://amzn.to/4xFxjfE 📌 Hostinger Web Hosting (Get 20% off with any hosting plan): https://www.hostinger.com?REFERRALCOD... Use code *ROBOREAR* for 20% off! 🔗 IMPORTANT LINKS SUMMARY Resource URL Complete Blog 👉 https://roborear.com/build-an-obstacl... GitHub Repository (Full Code) 👉 https://roborear.com/build-an-obstacl... 📑 TIMESTAMPS 0:00 - Intro! 0:33 - Complete Component List 1:14 - 4WD Chasis Motor Wiring Explained 2:30 - Wiring Explained (Full Setup) 4:37 - Logic Explaination of Obstacle Avoidance 5:44 - Arduino Code Walkthrough 8:21 - Car Avoiding Obstacles! 5:44 - Outro 🔥 WHAT YOU'LL LEARN ✅ How obstacle avoidance technology actually works ✅ HC-SR04 ultrasonic sensor wiring and programming ✅ SG90 servo motor control for 180° scanning ✅ Complete Arduino code explained line-by-line ✅ How the car detects and avoids obstacles in real-time ✅ Power management for all components 🤖 HOW THE OBSTACLE AVOIDANCE WORKS: 1. Car moves forward normally 2. Ultrasonic sensor constantly measures distance ahead 3. If obstacle closer than 45cm, car stops 4. Servo rotates 0° to 180° to scan left and right 5. Car calculates which side has more space 6. Turns toward the clearer path 8. Continues monitoring for new obstacles ⚡ COMMON ISSUES & FIXES ❌ Issue: Servo doesn't rotate fully ✅ Fix: Increase delay values in code (SCAN_DELAY to 150ms) ❌ Issue: Car doesn't detect obstacles ✅ Fix: Check HC-SR04 wiring, adjust SAFE_DISTANCE value (try 50cm) ❌ Issue: Car turns wrong way ✅ Fix: Swap IN1/IN2 or IN3/IN4 motor connections 📺 Also Watch Other Roborear Videos ✅ Complete Arduino Bluetooth RC Car Build    • Easiest Arduino RC Car Build for Under $50...   ✅ Complete Otto Robot DIY Assembly & Programming    • How to Build Your 1st Humanoid Robot for U...   ✅ ESP32-S3 AI Security Camera with Night Vision & Telegram Alerts    • DIY LoRa Security System with Motion Detec...   🤝 SUPPORT THE CHANNEL If this tutorial helped you build your first obstacle avoidance car: 👍 LIKE this video - It helps more makers find this content 🔔 SUBSCRIBE for weekly Arduino, ESP32, and AI robotics tutorials 💬 COMMENT your build - Share your car photos and questions 📤 SHARE with fellow makers who would love this project 🎯 KEYWORDS arduino obstacle avoidance car, obstacle avoiding robot, arduino robot car, ultrasonic sensor arduino, servo motor arduino, autonomous car arduino, smart car arduino, arduino project for beginners, obstacle detection robot, arduino hc-sr04, arduino sg90 servo, 4wd obstacle avoidance, arduino auto robot, self driving car arduino, arduino nano robot, arduino car tutorial, diy smart car, robot sensor arduino, arduino project ideas, autonomous vehicle arduino, collision avoidance system, arduino robotics, intelligent car arduino, Arduino Obstacle Avoidance Car 🏷️ HASHTAGS #ArduinoObstacleAvoidance #SmartCar #ArduinoRobot #ObstacleAvoidance #UltrasonicSensor #ServoMotor #ArduinoNano #L298N #ArduinoProject #DIYRobot #AutonomousCar #SmartRobot #ArduinoTutorial #RoboticsForBeginners #STEMEducation #ArduinoCar #ArduinoDIY #AIrobot #SelfDrivingCar #MakerProjects #RoboticsTutorial #TechDIY #ArduinoEngineering 📧 CONTACT & COLLABORATIONS For business inquiries, sponsorships, or collaborations: 📧 Email: roborearbd@gmail.com 🌐 Website: https://roborear.com Subscribe for weekly robotics project breakdowns, and comment below if you want to see a line-following version next!