The core technology of this robot is that it uses a L293D motor driver shield which is built for Arduino UNO board. in 2023 this motor driver with full sized UNO board is outdated in the tech ...

Below is a simplified wiring diagram for the robot: Line Tracking Module: Connect the three signal wires to D4, D5, D6. Ultrasonic Sensor: Trig to D7, Echo to D8. Motors: Connect to the built-in motor ...