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Overview

This hobby project is a self-driven initiative to build a collision detecting robotic car using an Arduino Uno, ultrasonic sensor, and motor driver system. The car is programmed to automatically stop when an object is detected within a set range—demonstrating core robotics concepts like obstacle detection, motion control, and sensor integration.

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Architecture

architecture

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Solution

  • The Collision Detecting Car addresses this problem by integrating:
  • An HC-SR04 ultrasonic sensor to detect obstacles.
  • A gear motor setup for better traction.
  • An Arduino Uno that acts as the brain of the system.
  • A 4x4 motor driver powered by a 9V battery to control motion.
  • The car continuously monitors the distance to objects in front. When an object is detected within 7 inches, it stops to avoid impact.

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View project

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Skills picked up

  • Programming in Arduino C
  • Understanding the HC-SR04 ultrasonic sensor
  • Integrating and controlling gear motors
  • Using a 4x4 motor driver module
  • Applying basic electronics and embedded logic