Proiect1

Electronic Monitoring System Project

Project Overview

This project is a medium-complexity electronic monitoring system based on a microcontroller. It reads data from sensors (temperature and light), displays information on an LCD, controls LEDs and a buzzer, and allows user interaction via buttons.

Defined Design Requirements

• Designed a medium-complexity electronic board including:
  • LCD
  • Temperature sensor
  • Buzzer
  • LEDs
  • Buttons
  • Voltage regulator
• Created a block diagram representing the main components and their interconnections.
• Implemented the system at the discrete component level.
• Developed the layout for the electronic board.

Block Diagram

+-------------------+
|  Voltage Regulator|
|       LM7805      |
+---------+---------+
          |
          v
 +--------+--------+
 |  Microcontroller |
 |    PIC16F877A    |
 +---+---+---+---+--+
     |   |   |   |
     v   v   v   v
   LCD  LEDs Buzzer Sensors
            |         |
            |         +------> Temperature Sensor (TMP36)
            |         +------> Light Sensor (LDR)
     Buttons

Block Description

1. Voltage Regulator (100)

• Uses LM7805 to provide stable +5V.
• Powers microcontroller and other components.

2. Microcontroller (200)

• PIC16F877A or similar.
• Connected to LCD, LEDs, buzzer, sensors, and buttons.

3. LCD (300)

• 16x2 display.
• Displays real-time sensor data and system status.

4. LEDs (400)

• Four LEDs controlled via BC817 transistors.
• Indicate system states or alerts.

5. Buzzer (500)

• Activated via BC817 transistor.
• Provides audible notifications.

6. Temperature Sensor (600)

• TMP36 analog sensor.
• Sends analog voltage to microcontroller.

7. Light Sensor (700)

• LDR with voltage divider.
• Measures ambient light.

8. Buttons (800)

• Three push buttons with pull-down resistors.
• Allow user to interact (mode change, reset, etc.).

9. Connector (900)

• For programming or external module connection.
• Provides power and communication pins.

PCB Manufacturing Sponsor

This PCB was kindly sponsored by PCBWay, who provided fabrication support for this project.

I would like to thank PCBWay for:

• High PCB manufacturing quality
• Fast order processing & delivery
• Professional communication and support

More about their services:
➡️https://m.pcbway.com/

🖼️ PCB Preview

🔹 Top View

🔹 Bottom View

Summary

This project demonstrates the design, implementation, and layout of a medium-complexity electronic board capable of monitoring environmental parameters, displaying data, and interacting with users through LEDs, buzzer, and buttons.