A-SLI02 -Smart light using PIR and RGB (WHITE)

PIR
Motion Detection with RGB LED and LCD project.

Project
Overview

This project
demonstrates a basic motion detection system using a PIR sensor,
an RGB LED, and a 16x2 LCD display (No I2C), all controlled by an
Arduino board. When the system detects motion, the RGB LED lights up
white and the LCD shows a “Motion Detected” message. After no motion is
detected for 10 seconds, the system updates the LCD to “No Motion” and turns
off the LED.

This system
is ideal for home security, automatic lighting, and interactive
environments, providing both visual alerts and real-time
monitoring in a compact, beginner-friendly format.

Project
Objectives

• Detect human or animal movement
  using a PIR sensor.


• Display motion status using a
  16x2 LCD(No I2C).


• Provide visual alerts using an
  RGB LED.


• Introduce beginners to sensor
  interfacing and timed logic with Arduino.


• Demonstrate how to use
  conditional logic and timers in embedded systems.


• Build a low-power, responsive
  motion detection system suitable for real-world applications.

Key
Features

• Real-Time Motion Detection: Instantly identifies movement
  using a PIR sensor.


• Visual Feedback: Displays “Motion Detected” or
  “No Motion” on the LCD.


• RGB LED Indicator: Lights up white upon motion,
  turns off after 10 seconds of inactivity.


• Timed Response Logic: LED remain active for a set
  time after motion stops.


• Low Power Operation: Ideal for battery-powered or
  energy-conscious setups.


• Easy to Build & Customize: Uses basic Arduino components
  and can be expanded easily.


• Beginner-Friendly Code: Simple logic with clear
  function structure for easy understanding.

Required
Components

Learning
Outcomes

By
completing this project, learners will:

• Understand the working principle
  of PIR motion sensors.


• Learn how to interface and
  program a 16x2 LCD using the LiquidCrystal library.


• Gain experience with PWM
  to control an RGB LED.


• Use the millis() function for non-blocking
  time-based operations.


• Learn basic embedded programming
  concepts such as digital input/output, flags, timing,
  and event handling.


• Build a practical system that
  responds to real-world events.

Applications

This motion
detection system has a wide range of practical applications:

1. Home Security Systems: Detect unauthorized movement
   and activate lights or alarms.


2. Automatic Lighting: Turn lights on when someone
   enters a room and off after leaving.


3. Energy-Saving Devices: Control lights or fans based
   on room occupancy.


4. Interactive Exhibits: Trigger lights or displays
   when a visitor is nearby.


5. Smart Home Automation: Integrate with alarms,
   cameras, or smart lighting systems.


6. Intruder Alarms: Alert homeowners to unexpected
   motion.


7. Visitor Counters: Track movement into and out of
   areas like stores or exhibitions.


8. Pet Monitoring: Detect pet activity and
   respond accordingly (e.g., lights or cameras).