Arduino Uno

The Arduino Uno acts as the main controller of a small Smart Dustbin Robot. It receives distance information from the ultrasonic sensor and decides when the dustbin lid should open. When a hand or person comes close to the sensor, the Arduino processes the signal and sends a control signal to the servo motor. The Arduino can be programmed using the Arduino IDE with a simple C/C++-based program.

For this project, the Arduino Uno is connected to the HC-SR04 ultrasonic sensor and a servo motor. The sensor detects an approaching hand, while the servo rotates the lid to the open position. After a short delay, the Arduino commands the servo to return and close the lid automatically. This makes the Arduino Uno an important component for learning sensor interfacing, motor control, programming, and basic automation.