This project implements a password entry system using Arduino, where users enter a 4-digit password via a keypad, and the entered password is displayed on an LCD. If the password matches the preset ...

Connect the I2C Module to the Arduino: SCL of module to A5 of Arduino SDA of module to A4 of Arduino VCC of module to +5V of Arduino GND of module to GND of Arduino Adjust the brightness using the ...

Radio Frequency Identification is widely used in contactless payment cards, National Highway Tollgate systems, and in security passes. By integrating an RFID reader with an Arduino, you will be able ...