SMART STREET LIGHT

ONCE WHEN I WAS SITTING IN THE BALCONY I OBSERVED THE STREETLIGHTS OFF WHEN IT WAS DARK AND FROM THIS I GOT AN IDEA OF MAKING AN AUTOMATIC STREETLIGHT.

YOU CAN EVEN SEE MY YouTube VIDEO TO MAKE IT :-

THE PROCEDURES ARE GIVEN BELOW :-

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🛠️ เจาะลึกเบื้องหลังการทำงาน (Deep Dive / Technical Analysis)

The Smart Street Light project replicates modern city infrastructure. Traditional street lights burn massive amounts of coal by staying on at 100% brightness all night. This project proposes a smart, energy-saving solution using LDRs and IR sensors.

The Dual-Sensor Logic

1. Ambient Light (LDR): During the day, the Photoresistor (LDR) tells the Arduino to keep the street light entirely OFF. As evening falls, the light turns on at a dim 20% brightness (using PWM).
2. Proximity (IR Sensor): An Infrared obstacle sensor is mounted at the base of the light pole.
3. The Boost: When a pedestrian or car passes the pole, the IR sensor triggers the Arduino to boost the LED brightness to 100% for 10 seconds, before returning to 20%.

Hardware Requirements

• Arduino Uno/Nano: To process the logic.
• Photoresistor (LDR): To detect Day/Night cycles.
• IR Obstacle Sensor: To detect passing traffic.
• High-Power White LEDs: The street lamps.

Why Build This?

This project is a perfect demonstration of IoT for Smart Cities. It teaches you how to combine two different sensor inputs (if (NightTime && ObjectDetected)) to create highly efficient, logic-gated automation systems.