Automatic Water Level Controller With Message Alerts using GSM

 

Block Diagram :- 

Circuit Diagram :-

Video 

GitHub :-       Code

Code :-

//Prateek //www.prateeks.in #include<LiquidCrystal.h> #include<Wire.h> #include <SoftwareSerial.h> #define rxPin 2 #define txPin 3 SoftwareSerial sim800(rxPin, txPin); LiquidCrystal lcd(12, 11, 10, 9, 8, 7); int FloatSensor = 14; int red = 6; int green = 4; int relay = 15; int buzzer = 5; int buttonState = 1; void setup() { Serial.begin(9600); sim800.begin(9600); sim800.println("AT"); pinMode(FloatSensor, INPUT_PULLUP); pinMode (red, OUTPUT); pinMode (relay, OUTPUT); pinMode (green, OUTPUT); pinMode (buzzer, OUTPUT); lcd.begin(16, 2); lcd.setCursor(0, 0); lcd.print(" Welcome To"); lcd.setCursor(0, 1); lcd.print(" Our Projects"); delay(3000); lcd.setCursor(0, 0); lcd.print("REPRESENTED BY:- "); lcd.setCursor(0, 1); lcd.print("JustDoElectronics"); delay(3000); lcd.clear(); } void loop() { buttonState = digitalRead(FloatSensor); if (buttonState == HIGH) { digitalWrite(red, LOW); digitalWrite(green, HIGH); digitalWrite(buzzer, LOW); digitalWrite(relay, LOW); Serial.println("WATER LEVEL - LOW"); lcd.setCursor(0, 0); lcd.print("W-Level:- Normal "); lcd.setCursor(0, 1); lcd.print(" Motor ON."); SendMessageTankNotFull(); } else { digitalWrite(red, HIGH); digitalWrite(green, LOW); digitalWrite(buzzer, HIGH); digitalWrite(relay, HIGH); Serial.println("WATER LEVEL - HIGH"); lcd.setCursor(0, 0); lcd.print("W-Level:- FULL.. "); lcd.setCursor(0, 1); lcd.print(" Motor OFF"); SendMessageTankFull();; } delay(1000); } void SendMessageTankFull() { sim800.println("AT+CMGF=1"); delay(1000); sim800.println((char)26); delay(100); sim800.println("AT+CMGS=\"+918830584864\"\r"); delay(1000); sim800.println("Water tank is full"); delay(1000); } void SendMessageTankNotFull() { sim800.println("AT+CMGF=1"); delay(1000); sim800.println((char)26); delay(100); sim800.println("AT+CMGS=\"+918830584864\"\r"); delay(1000); sim800.println("Monitoring started"); delay(1000); }