Abstract: A carefully planned schematic diagram will simplify the study and servicing of electronic equipment. Whereas a conventional schematic merely shows the electrical components and how they are ...

The Arduino Piano Player allows users to press push-buttons and generate musical notes using a buzzer. It demonstrates how input pins, tone generation, and loop logic work in microcontrollers.

This is a simple and practical implementation of an RFID-based attendance system using Arduino. It uses the MFRC522 RFID module to detect and read RFID ... Unauthorized cards trigger a red LED and ...