Smart Environment Monitoring Dashboard

This is an ESP32-based IoT mini project for monitoring temperature, humidity, and motion. The ESP32 reads data from a DHT11 sensor and PIR motion sensor, then displays live values on a browser-based dashboard through Wi-Fi.

Features

• Live temperature monitoring
• Live humidity monitoring
• PIR motion detection
• Fan LED automation when temperature is high
• Ventilation LED automation when humidity is high
• Security LED automation when motion is detected
• ESP32-hosted web dashboard
• Temperature and humidity chart
• Data history table
• PDF report download from dashboard

Requirements

See requirements.txt.

Hardware Connections

Component	ESP32 Pin
DHT11 DATA	GPIO 26
PIR Sensor OUT	GPIO 27
Fan LED	GPIO 18
Ventilation LED	GPIO 19
Security LED	GPIO 21
DHT11 VCC	3.3V
DHT11 GND	GND
PIR VCC	5V
PIR GND	GND

Each LED should be connected with a 220 ohm resistor.

Arduino Libraries

Install these libraries in Arduino IDE:

• DHT sensor library by Adafruit
• Adafruit Unified Sensor

Also install the ESP32 board package:

• Boards Manager URL: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
• Board package: esp32 by Espressif Systems

How to Run

1. Open SmartEnvironmentMonitor.ino in Arduino IDE.
2. Select the correct ESP32 board.
3. Select the correct COM port.
4. Upload the sketch to the ESP32.
5. Open Serial Monitor at 115200 baud.
6. Enter the Wi-Fi name and password when requested.
7. Copy the IP address printed in Serial Monitor.
8. Open the IP address in a browser connected to the same Wi-Fi network.

Example:

http://192.168.1.10

Automation Rules

Condition	Action
Temperature greater than 35 C	Fan LED ON
Humidity greater than 80%	Ventilation LED ON
Motion detected	Security LED ON

Project Files

File	Description
SmartEnvironmentMonitor.ino	Arduino sketch for ESP32
ARDIUNO.txt	Original Arduino code text file
PROJECT1_.pdf	Project report
requirements.txt	Project requirements
.gitignore	Git ignore rules

Notes

The dashboard uses external CDN links for Chart.js, jsPDF, and jsPDF AutoTable. The ESP32 and the browser device need internet access if those dashboard features are used.