GEYSER-MONITORING-SYSTEM

Conventional geysers lack automatic safety mechanisms.
Risks include dry run damage, overheating, and energy waste.
This project introduces a smart system using STM32, P43 sensor, and DS18B20.
Web dashboard via Firebase enables remote alerts and monitoring.

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Features

• Prevent dry run operation using P43 water level sensor
• Real-time temperature monitoring with DS18B20
• Simulate geyser ON/OFF using LED and relay module
• Threshold-based automatic control logic using STM32
• UART communication between STM32 and ESP32
• Live data pushed to Firebase and displayed on dashboard
• Fully responsive and synced UI built with HTML and Firebase

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Components Used

• Microcontroller: STM32F4 (STM32F103C8T6)
• Sensors:
  • P43 (water level – digital GPIO)
  • DS18B20 (temperature – 1-Wire)
• Output:
  • LED (simulated geyser)
  • Relay Module (controls geyser simulation)
• Communication:
  • UART (STM32 ↔ ESP32)
  • Wi-Fi / HTTP (ESP32 ↔ Firebase)
• Software:
  • VS Code (Embedded C – HAL)
  • Firebase Realtime Database
  • HTML + JS for Dashboard UI

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Connections

Component	Connection
P43 Sensor	PB0 (STM32 GPIO – Digital Input)
DS18B20 Sensor	PA1 (STM32 – 1-Wire Input)
LED (Simulated ON)	STM32 GPIO Output + Relay Driver
STM32 TX (PA9)	ESP32 RX (GPIO16)
STM32 RX (PA10)	ESP32 TX (GPIO17)
3.3V, GND	Shared between STM32, sensors, ESP32

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Tools & Libraries

• STM32CubeIDE or VS Code (Embedded C – STM32 HAL)
• Arduino IDE (ESP32 Wi-Fi Firebase code)
• FirebaseESP32 library
• OneWire & DallasTemperature libraries
• Firebase Realtime Database
• HTML + CSS + JS for dashboard
• Chrome for UI visualization

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Methodology

Sensor Integration

• Connect P43 to detect water presence
• Connect DS18B20 for temperature monitoring

Signal Processing

• Use STM32 to read sensor values via GPIO and 1-Wire

Control Logic Implementation

• If water level is low, geyser stays OFF (relay + LED)
• If temperature exceeds threshold, geyser turns OFF

Simulation Output

• LED and relay module indicate ON/OFF state of geyser

Testing & Validation

• Verified system response to various water/temp conditions

Communication Flow

• P43 → STM32 (Digital GPIO)
• DS18B20 → STM32 (1-Wire protocol)
• STM32 → ESP32 (UART)
• ESP32 → Firebase (Wi-Fi / HTTP)

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Firebase Configuration

#define FIREBASE_HOST "YOUR_FIREBASE_HOST_URL"
#define FIREBASE_AUTH "YOUR_FIREBASE_AUTH_TOKEN"