Advanced Line Follower Robot with Sonar Cave Detection

An advanced autonomous line follower robot using QTR-8RC sensors and HC-SR04 ultrasonic sensors.

The robot supports:

• Auto calibration
• Junction detection
• Finish detection
• Gap handling
• Cave detection
• Wall following assistance
• White/black line switching

Features

• QTR-8RC reflectance sensor array
• HC-SR04 ultrasonic integration
• Automatic threshold calibration
• T-junction and Y-junction detection
• 90-degree turn handling
• Cave navigation logic
• PD-based correction system

Hardware Used

• Arduino Mega 2560
• QTR-8RC Sensor Array
• HC-SR04 Ultrasonic Sensors
• TB6612FNG Motor Driver
• DC Motors

Included Files

• Advanced_LFR_System.ino
• QTR8RC_HCSR04_Integration.ino
• LFR Algorithm.pdf

Author

Md. Mahinul Kabir