https://youtu.be/Ddkci5myxYI

This is a current working project. It's a 3D printed Maze Solver and Line Follower based on the Pololu 3Pi robot. It uses a Arduino Leonardo and a custom made shield.

Materials:

• Arduino Leonardo
• L293D
• Piezo Buzzer
• QTR-1RC Reflectance Sensor (2-Pack) x 2 (https://www.pololu.com/product/2459)
• QTR-8A Reflectance Sensor Array (Only the cutted 2 sensor at the left) https://www.pololu.com/product/960
• 75:1 Micro Metal Gearmotor HPCB 6V (https://www.pololu.com/product/3064)
• Pololu Wheel 42×19mm Pair (https://www.pololu.com/product/1090)
• Pololu Micro Metal Gearmotor Bracket Pair (https://www.pololu.com/product/989)
• Pololu Ball Caster with 1/2″ Metal Ball (https://www.pololu.com/product/953)
• 2-AA Batteries
• 2-AA Battery Holder (https://www.pololu.com/product/1150)

I can send the arduino Code if needed!!

Good Printing and Best Regards!!