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Arduino Alcohol Detector
Just Do Electronics
February 02, 2020
Arduino Alcohol Detector
Circuit Diagram :-
Code :-
//prateek singh //www.prateeks.in #include
LiquidCrystal lcd(2,3,4,5,6,7); #define sensor 9 #define led 13 #define buz 8 void setup() { Serial.begin(9600); lcd.begin(16,2); lcd.print("Alcohol Detector"); lcd.setCursor(0,1); lcd.print("www.prateeks.in"); delay(2000); pinMode(sensor, INPUT); pinMode(buz, OUTPUT); pinMode(led, OUTPUT); lcd.clear(); } void loop() { float adcValue=0; for(int i=0;i<10;i++) { adcValue+= analogRead(sensor); delay(10); } float v= (adcValue/10) * (5.0/1024.0); float mgL= 0.67 * v; Serial.print("BAC:"); Serial.print(mgL); Serial.print(" mg/L"); lcd.setCursor(0,0); lcd.print("BAC: "); lcd.print(mgL,4); lcd.print(" mg/L "); lcd.setCursor(0,1); if(mgL > 0.3) { lcd.print("Drunk "); Serial.println(" Drunk"); digitalWrite(buz, HIGH); digitalWrite(led, HIGH); } else { lcd.print("Normal "); Serial.println(" Normal"); digitalWrite(buz, LOW); digitalWrite(led, LOW); } delay(100); }
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