Smoke Detector And Fire Alarm System Using Arduino And Gsm

Circuit Diagram :-

Code :-

//Prateek //www.prateek.in #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); const int redLed = 4; int greenLed = 6; const int buzzer = 5; int smokeA0 = A0; const int flame = 2; int Flame = HIGH; int sensorThres = 150; void setup() { pinMode(redLed, OUTPUT); pinMode(buzzer, OUTPUT); pinMode(greenLed, OUTPUT); pinMode(smokeA0, INPUT); pinMode(flame, INPUT); lcd.init(); lcd.backlight(); lcd.clear(); Serial.begin(9600); lcd.begin(16,2); } void loop() { int analogSensor = analogRead(smokeA0); Serial.print("Pin A0: "); Serial.println(analogSensor); lcd.print("Smoke Level: "); lcd.print(analogSensor-50); lcd.setCursor(0, 1); lcd.print("Flame low"); Flame = digitalRead(flame); if (Flame== LOW) { lcd.setCursor(0, 1); lcd.print("Flame High"); digitalWrite(redLed, HIGH); delay(5000); digitalWrite(buzzer, HIGH); delay(5000); digitalWrite(greenLed, LOW); } if (analogSensor-50 > sensorThres) { digitalWrite(redLed, HIGH); digitalWrite(buzzer, HIGH); Serial.println("AT+CMGF=1"); delay(1000); Serial.println("AT+CMGS=\"+918830584864\"\r"); Serial.println("Flre And Smoke Alert"); Serial.println((char)26); digitalWrite(greenLed, LOW); } else { digitalWrite(redLed, LOW); digitalWrite(greenLed, HIGH); digitalWrite(buzzer, LOW); } delay(500); lcd.clear(); }