Robotics & Autonomous Systems Free Updated Sep 03, 2026

Obstacle-Avoiding Maze Solver Robot with Ultrasonic Array

Autonomous differential-drive robot utilizing wall-following algorithms to solve unknown labyrinths.

Project Overview

Build a maze solving robot with a 3-sensor ultrasonic array that navigates tight corridors using the Left-Hand wall following rule.

Features

  • 3x HC-SR04 ultrasonic distance sensors with filtered echo timing
  • L298N dual H-bridge motor speed control with PWM
  • Deadlock and loop-escape detection logic
  • Compact battery-powered desktop format