Fingerprint Door Lock System Using Android App

 

Circuit diagram :- 

Code :- 

//Prateek //wwww.prateeks.in //https://www.youtube.com/c/JustDoElectronics/videos int value1; #define relay 13 const int buzzer = 7; void setup() { Serial.begin(9600); pinMode(relay, OUTPUT); pinMode(buzzer, OUTPUT); digitalWrite(relay, LOW); } void loop() { Serial.print("Reading"); while(Serial.available()==0); value1 = Serial.read(); Serial.print(value1); if (value1==0) { Serial.print("Unlocking"); digitalWrite(relay, LOW); digitalWrite(buzzer, HIGH); delay(1000); digitalWrite(buzzer, LOW); } if (value1==1) { digitalWrite(relay, HIGH); Serial.print("Locking"); delay(3000); digitalWrite(relay, LOW); } }


GitHub Link :-  Fingerprint Door Lock System


Video :-