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![]() A buzzer is also used for various indications. Here we have added a Yellow LED which indicates that fingerprint module is ready to take an image of the finger. You can check some more projects using fingerprint module:įingerprint based biometric voting machine All the process is commanded by Arduino like taking an image of finger’s print, convert it into templates and storing as ID etc. And Del key is used for reset or delete data from EEPROM of Arduino.įingerprint sensor module captures finger’s print image and then converts it into the equivalent template and saves them into its memory as per selected ID by Arduino. Now user need to press DEL/OK key (this time this key behave like OK) to proceed with selected ID. Similarly, DEL/OK key also has the same double function like when user enrolls new finger, then he/she need to select finger ID by using another two key namely UP and DOWN. Besides enroll key is also used to download attendance data over serial monitor. ENROLL key has both enrollment and back function. This time ENROLL key behave as Back key, i.e. ![]() Now if at this time user does not want to proceed further then he/she can press ENROLL key again to go back. So when the user wants to enroll new finger then he/she need to press ENROLL key then LCD asks for the ID, where user want to be store the finger print image. ENROLL key is used for enrollment of a new person into the system. Here we are using 4 push buttons to enroll, Delete, UP/Down. In this fingerprint attendance system circuit, we used Fingerprint Sensor module to authenticate a true person or employee by taking their finger input in the system.
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