This project demonstrates how to interface a PIR (Passive Infrared) Sensor with an Arduino UNO. The system detects motion using the PIR sensor and triggers a red LED as an output indication. Additionally, the motion status is printed on the Serial Monitor.
- Motion Detection: Uses a PIR sensor to detect movement.
- Visual Indicator: A red LED turns on when motion is detected.
- Serial Monitoring: The motion status is displayed on the Serial Monitor in real-time.
- Arduino UNO
- PIR Sensor
- Red LED
- Resistor (220Ω)
- Jumper Wires
- Breadboard
| Component | Arduino UNO Pin |
|---|---|
| PIR Sensor (OUT) | D2 |
| Red LED (Anode) | D13 |
| LED (Cathode) | GND via 220Ω Resistor |
| PIR Sensor (VCC) | 5V |
| PIR Sensor (GND) | GND |
- The PIR sensor detects motion based on infrared radiation changes.
- When motion is detected, it sends a HIGH signal to the Arduino.
- The Arduino turns on the LED and prints "Motion Detected!" on the Serial Monitor.
- When no motion is detected, the LED remains off, and "No Motion" is displayed.
- Connect the components as per the circuit diagram.
- Upload the provided Arduino code to the Arduino UNO.
- Open the Serial Monitor (9600 baud rate) to observe motion status.
- Wave your hand in front of the PIR sensor to test the motion detection.
This project is designed by Prince Kushwaha from COSM Electronics.
This project is open-source and can be modified and distributed for educational and personal use.