The Automatic Stair Lighting System is a smart energy-saving project that automatically turns ON stairway lights when someone approaches and turns them OFF after a set time. It uses PIR (motion) sensors or IR sensors to detect human presence and a microcontroller/relay driver to control the lights.

This project ensures safety in dark staircases and reduces unnecessary power consumption by eliminating the need for manual switching. It is widely applicable in residential buildings, hotels, offices, and shopping complexes.

Parts Used:

1. PIR Motion Sensor / IR Sensor – Detects human presence
2. Arduino / 8051 / PIC Microcontroller (Optional) – Controls the system
3. Relay Module – Switches stair lights ON/OFF
4. LED Strip / Bulbs – Lighting for stairs
5. Timer Circuit (Optional) – To auto turn OFF after delay
6. Power Supply (5V/12V Adaptor) – Runs sensors and controller
7. Connecting Wires & Enclosure – For safe setup