Smart-Water-Level-Monitoring-and-Auto-Switch-System-main

Smart Water Level Monitoring & Auto Switch System

Real-Time Percentage Scaling, SSD1306 OLED UI & Automated Buzzer Control

📊 Operational Overview System Logic

This automated water monitoring station utilizes an analog fluid sensor to translate raw resistive metrics into an exactly constrained 0–100% capacity range. The processing unit constantly tracks this scaling data against a defined threshold boundary to execute safety switch routines. Visual metrics stream directly to a monochrome SSD1306 OLED interface framework.

Auto-Switch Threshold

⚠️ Triggers ON when water level exceeds 35%

Visual Diagnostics

📺 Live data monitoring via 128x64 I2C OLED display

🛠️ Structural BOM Requirements Hardware List

Procure the following core components to deploy this precision safety switch project prototype:

Target Component Label	Structural Allocation Quantity	Functional Deployment Purpose
Arduino UNO / Nano	1 Unit	Main microcontroller unit processing ADC metrics and handling device constraints.
Analog Water Level Sensor	1 Unit	Tracks liquid presence via trace resistance lines to compute relative fluid volume.
SSD1306 OLED Display (I2C)	1 Unit	Renders the local graphical control interface header, system percentage, and switch state.
LED	1 Unit	Visual system indicator representing the current automated switch output power state.
Buzzer	1 Unit	Generates auditory notification frequencies during threshold violations.
Connecting Wires & Resistors	1 Set	Signal transmission jumpers and system current-limiting infrastructure.

🔌 Device Interface Pin Maps I/O Infrastructure

Wire your hardware prototype precisely matching these designated digital and analog configuration pins:

Complete Device to Arduino Main Pin Mapping Architecture:

Sensor / Module Output Pin	Arduino Target Pin Mapping	Functional Context
Water Sensor Signal	Analog Input Pin A0	Raw ADC value data stream path
LED Positive (Anode)	Digital Output Pin 13	Automated switch status light
Buzzer Positive Pin	Digital Output Pin 8	High-frequency alarm output line
OLED Display SDA	I2C Data Pin SDA	Serial data packet transfer channel
OLED Display SCL	I2C Clock Pin SCL	Serial sync clock timing line

💻 Optimized Production Code Engine Firmware Source

Copy and flash this highly efficient firmware directly onto your target hardware platform via the Arduino IDE workspace:

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 
#define SCREEN_HEIGHT 64 

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

const int waterLevelPin = A0; 
const int ledPin = 13;        
const int buzzerPin = 8;      

// Switch Threshold percentage mein (Yaani 35% se upar paani jayega toh ON hoga)
const int switchThresholdPercent = 35; 

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT); 

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
    for(;;); 
  }
  
  display.clearDisplay();
  display.setTextSize(1);      
  display.setTextColor(WHITE); 
  
  display.setCursor(10, 20);
  display.print("OLED WATER SWITCH");
  display.setCursor(20, 40);
  display.print("System Ready...");
  display.display(); 
  delay(2000);
}

void loop() {
  int sensorValue = analogRead(waterLevelPin);
  
  // RAW VALUE KO 0-100% MEIN CONVERT KARNE KA FORMULA
  int waterPercent = (sensorValue / 1023.0) * 100;
  waterPercent = constrain(waterPercent, 0, 100); // Safety limit

  display.clearDisplay(); 

  // Header Title
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.print("--- WATER SYSTEM ---");

  // Show Percentage Value
  display.setCursor(0, 22);
  display.print("Water Level: ");
  display.setTextSize(2); 
  display.print(waterPercent);
  display.print("%");

  // Switch Status Logic (Ab percentage ke mutabiq chalega)
  display.setTextSize(1);
  display.setCursor(0, 48);
  
  if (waterPercent > switchThresholdPercent) {
    digitalWrite(ledPin, HIGH);
    digitalWrite(buzzerPin, HIGH);
    display.print("SWITCH STATUS: ON ");
  } else {
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
    display.print("SWITCH STATUS: OFF");
  }

  display.display();
  delay(500); // Sampling interval debounce
}

Required Software Dependencies: Ensure that you have installed the Adafruit GFX Library and Adafruit SSD1306 Library in your Arduino IDE Library Manager prior to compiling and deploying.