Welcome to the Motion-Activated LED Control System project! This project aims to design and implement an interactive lighting system that dynamically adjusts LED intensity based on detected motion proximity. By using a PIC microcontroller and integrating motion sensors with LED arrays, this system provides an energy-efficient and user-friendly lighting solution for indoor spaces.
- Design a system that adjusts LED lighting intensity based on motion proximity.
- Incorporate user-centric design principles for a seamless and intuitive user experience.
- Enhance safety and awareness with warnings displayed on an LCD interface.
- Ensure efficient energy utilization.
The system consists of the following key components:
- PIC18F4525 Microcontroller: Acts as the central control unit.
- LED Arrays: Provides dynamic lighting based on detected motion.
- HC-SR04 Ultrasonic Sensor: Detects motion and calculates distance.
- SunFounder IIC I2C TWI 1602 Serial LCD Module Display: Displays warnings and system status.
- PWM Control: Adjusts LED brightness.
- I2C Communication: Interfaces with the LCD.
- Timer1: Calculates distance from the ultrasonic sensor.
| Name/Model | Price | Quantity | Source |
|---|---|---|---|
| PIC18F4525 | x | 1 | Microchip |
| LEDs | $5.99 | 12 | Amazon |
| Resistors | $3.99 | 15 | Amazon |
| Capacitors | $2.99 | 2 | Amazon |
| Wires | $5.99 | x | Amazon |
| Breadboards (ELEGOO 3pcs Breadboard 830 Point Solderless Prototype PCB Board) | $8.99 | 3 | Amazon |
| SunFounder IIC I2C TWI 1602 Serial LCD Module Display | $9.99 | 1 | Amazon |
| HC-SR04 Ultrasonic Sensor Module | $6.99 | 1 | Amazon |
- MPlabs IDE: Version: 2.46, Project Type: Standalone C project
- Smart Draw: Used for creating circuit diagrams
- The system uses a PIC microcontroller to control LED brightness and interact with the LCD display.
- PWM control adjusts the LED lighting intensity based on occupancy and ambient light levels.
- I2C communication interfaces with the LCD display.
- Timer1 calculates distance from the ultrasonic sensor.
- The project successfully utilized a PIC microcontroller as the central control unit.
- Hardware was built from scratch, meeting the requirement of not using premade PIC circuit boards.
- Peripheral components such as PWM control, I2C communication, and Timer1 were effectively integrated.
The project demonstrates the practical application of embedded systems engineering principles. Despite challenges such as switching PIC microcontrollers and adapting an Arduino-tailored LCD, the project successfully achieved its objectives. The development process enhanced our understanding of embedded systems and provided valuable hands-on experience.
- Setup the Hardware: Connect the components according to the schematic provided in the project report.
- Upload the Code: Use MPlabs IDE to upload the provided code to the PIC18F4525 microcontroller.
- Power the System: Once the hardware is set up and the code is uploaded, power the system to begin operation.
- Monitor the LCD: Observe the LCD for system warnings and status updates.
- Interact with the System: Approach the ultrasonic sensor to see the LED intensity adjust based on your proximity.