This project automatically controls a 220V AC LED bulb based on ambient light intensity using an LDR sensor, relay module, and ATmega328P microcontroller.
- Automatic ON/OFF operation
- Energy-efficient lighting control
- LDR-based light detection
- Relay-controlled AC load switching
- Custom PCB design
- ATmega328P
- LDR Sensor Module
- Relay Module
- 220V AC LED Bulb
- 5V Power Supply
The LDR continuously monitors ambient light intensity.
- During daylight → Bulb OFF
- During darkness → Bulb ON
The ATmega328P processes sensor input and controls the relay module accordingly.
- Arduino Source Code
- Project Report
- Circuit Diagram
- PCB Design
- Project Images
Akshay Gosavi