Project Description A secure door lock system using Arduino Uno, RFID (MFRC522), and a 4x4 Matrix Keypad. Authorized users can unlock the door with either an RFID tag or a PIN code. Features 🔒 Dual ...
An RFID-based attendance system transforms the tedious task of manual attendance tracking into an automated, error-free process. What makes this project particularly exciting is how a few inexpensive ...
#define SS_PIN 53 #define RST_PIN 11 #define TRIG_PIN 25 #define ECHO_PIN 23 #define pitches.h const int G1 = 2, G2 = 3, G3 = 4, Y1 = 5, Y2 = 6, Y3 = 7, R1 = 8, R2 = 9, R3 = 10; const int buzz = A2; ...
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