قفل إلكتروني بإستخدام بطاقات الأمان مع الاردوينو [ RFID with arduino ] 

#include #include #define SS_PIN 10 #define RST_PIN 9 MFRC522 mfrc522(SS_PIN, RST_PIN); #include Servo myservo; int buzzer=2; void setup() { Serial.begin(9600); pinMode(buzzer,OUTPUT); myservo.attach(5); myservo.write(0); SPI.begin(); mfrc522.PCD_Init(); } void loop() { if (! mfrc522.PICC_IsNewCardPresent()) {return;} if (! mfrc522.PICC_ReadCardSerial()) {return;} Serial.print("UID tag :"); String content= ""; byte letter; for (byte i = 0; i < mfrc522.uid.size; i++) { Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "); Serial.print(mfrc522.uid.uidByte[i], HEX); content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ")); content.concat(String(mfrc522.uid.uidByte[i], HEX)); } Serial.println(); Serial.print("Message : "); content.toUpperCase(); if (content.substring(1) == "87 96 4A B3") /// change with your ID { myservo.write(180); digitalWrite(buzzer,HIGH); delay(300); digitalWrite(buzzer,LOW); delay(2000); myservo.write(0); } else{ digitalWrite(buzzer,HIGH); delay(3000); digitalWrite(buzzer,LOW); } }