A Motion Sensing Energy Saver Fan is an intelligent fan system that automatically turns on when it detects human movement in the room and turns off when no motion is detected for a set period. Using PIR (Passive Infrared) sensors and a microcontroller, this system saves electricity by operating only when needed, making it ideal for homes, offices, and public places

Parts Used:

1. PIR Motion Sensor – Detects human presence
2. Microcontroller (Arduino, PIC, or ESP8266) – Processes sensor signals
3. Relay Module – Controls the fan power supply
4. Fan – AC or DC fan for cooling
5. Power Supply – Provides necessary voltage to the system
6. Timer Circuit – Maintains fan operation for a set time after detection