Uploaded December 2016 | Updated September 2026, 2 weeks ago

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In this tutorial, you will make obstacle avoiding robot. This tutorial involves building a 4WD robot with an ultrasonic sensor that can detect nearby objects and change its direction to avoid these objects. The ultrasonic sensor will be attached to a servo motor which is constantly scanning left and right looking for objects in its way.


Required Hardware :
1x Arduino UNO R3:
bit.ly/2xt9MVk (Banggood)
amzn.to/2LZr6t4 (Amazon)
1x L293D Motor Drive Shield:
bit.ly/2H7vmy9 (Banggood)
amzn.to/3qADuic (Amazon)
1x HC-SR04 Ultrasonic Distance Module:
bit.ly/2kJXZsN (Banggood)
amzn.to/3s4SbdT (Amazon)
1x SG90 9g Mini Servo:
bit.ly/2JoUQMY (Banggood)
amzn.to/3avwe1N (Amazon)
1x Bracket for HC-SR04:
bit.ly/3bvvF68 (Banggood)
amzn.to/2Nxcsd3 (Amazon)
4x Wheel and Gear Motor:
bit.ly/2RXAWLS (Banggood)
amzn.to/2M2pChV (Amazon)
3 in 1 Jumper Wire:
bit.ly/2J6de9E (Banggood)
amzn.to/3doetmT (Amazon)
4WD Robot Car Chassis Kit:
bit.ly/2x8EdRk (Banggood)
amzn.to/2M2rirJ (Amazon)

Recommended Items:
Use Your Muscles in Project - amzn.to/3wdL45C
37 Sensor & Module Packages - amzn.to/3m66WeQ
Try this Robot Arm - amzn.to/3fq8DCl
Best Resin 3D Printer - amzn.to/39tY8KB
Arduino Compatible Kits - bit.ly/2J2AFF7
Banggood Spring Sale - bit.ly/3slMbOn


Library:
Install AFMotor.h library: learn.adafruit.com/adafruit-motor-shield/library-install
Install NewPing.h library: bitbucket.org/teckel12/arduino-new-ping/downloads

Source Code: github.com/MertArduino/Arduino-Obstacle-Avoiding-Robot-Car-4WD