Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

Circuit and Working Fig. 2 shows the circuit diagram of the automatic school bell. It is built around Arduino Uno R3, 16×2 LCD display with I2C (MOD1), DS3231 RTC, 4×4 matrix keypad, 5V SPDT relay, ...

The Raspberry Pi Pico is both faster and cheaper than the Arduino Nano, but the nano has better resources and community.

SI473X Library for Arduino. Contribute to pu2clr/SI4735 development by creating an account on GitHub.

In this article we discussed how RTC Module works and how we can interface it with Arduino to build DIY Arduino digital clock.

This project demonstrates how you can build a real-time clock (RTC) with a temperature display using Arduino, DS3231 RTC and SSD1306 display.

This is an LCD clock made with DS3231 real time clock module, which unlike DS1307 has the possibility of Alarm and temperature monitor. In this case, the LCD screen displays the date, time, two alarms ...

Maker Michael Klements has built a unique electromechanical clock using a little Arduino hardware, code, and 28 servos, which tilt panels to reveal the correct time in digital format. As the time ...