Arduino-Based Touchless Doorbell

Overview: This project showcases a touchless doorbell system built using Arduino UNO. Designed by a team of three, it leverages a PIR sensor to detect motion and activate a buzzer, alerting the residents of a visitor without the need for contact. It's a compact and efficient application of automation in daily life.

Key Components:

• Arduino UNO
• PIR Motion Sensor
• Buzzer
• Resistors
• Bulb (optional for indicators)
• Jumper Wires
• Breadboard

Working Mechanism:

When someone comes close to the door, the PIR sensor detects motion and sends a signal to the Arduino. The Arduino then triggers the buzzer, which acts as a doorbell. The system is clean, contactless, and works without any need for pressing a button.

Pros:

• Completely contactless and safe
• Cost-effective and easy to implement
• Beginner-friendly with scope for smart home upgrades

Cons:

• May trigger due to pets or minor movement
• Requires stable indoor conditions
• Limited detection range by PIR sensor

Simulation and Hardware:

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