Project Idea
Develop an Automatic Street Light system that turns ON when ambient light falls below a set threshold (at dusk) and turns OFF when sufficient daylight is detected. This system helps conserve energy and requires no manual operation, making it ideal for streets, campuses, parking areas, and remote locations where automation improves efficiency and reliability.
Project Description
This project uses a Light Dependent Resistor (LDR) as a sensor to detect ambient light levels. When it gets dark, the resistance of the LDR changes, triggering the Arduino to activate a relay that switches ON the street light (LED). When daylight is present, the light automatically turns OFF. The system can be extended with motion sensors to further optimize energy use by activating lights only when movement is detected at night. This project is energy-efficient, low-cost, and practical for real-world deployment.
Components List
Arduino Uno
Light Dependent Resistor (
Relay Module
LED
Resistors
Breadboard and Connecting Wires
Power Supply
Diode
Features
Automatic Light Control Based on Ambient Light
Energy Efficient Operation
Works Without Human Intervention
Expandable with Motion Detection
Simple and Reliable Design
Low Power Consumption
Cost-Effective and Scalable
Suitable for Both Rural and Urban Installations
Can Operate on Solar or Battery Power
Easy to Assemble and Test
Project Applications
Street and Roadside Lighting- Automatically control lights to reduce energy usage and maintenance.
School and College Campuses- Light up pathways only when needed during the night.
Parking Lots and Open Areas- Improve security and visibility with automatic lighting.
Industrial Premises- Control lighting in yards and loading docks efficiently.
Farm Paths and Rural Roads- Use in off-grid or low-maintenance locations with solar panels.
Railway Stations and Bus Stands- Automate platform or shelter lighting for passenger convenience.
Public Parks and Walkways -Maintain safety while minimizing unnecessary power use.
Smart City Projects- Integrate into smart grid systems for optimized lighting networks.
Remote Villages and Border Areas- Deploy where human maintenance is limited or unavailable.
Disaster Relief Camps- Provide reliable night-time lighting during emergency situations.
Shipping Dimensions
Length: 12 cm
Width: 10 cm
Height: 6 cm
Weight: 350 grams
estimate shipping weight:(approx)
1kg
📦 Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code
(For DIY KITs - only the components will be provided)
Project Types:
- DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
- DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
- Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
- Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Notes -
All the products are made by LearnElectronics India and not for re-sale.
These project is a prototype project to show/present/explain and work like to real life product. It is not a product, if you need a ready-made product then reach out to us here.

