Binary Clock Shield

Build a fully functional binary clock with your Arduino.

This project is coming soon. Sign up to receive updates and be notified when this project launches.

The Binary Clock Shield can turn your Arduino into an extremely accurate real-time clock (RTC). With so many integrated features, the Shield can also be used as a counter, alarm, timer, thermometer, music box, and more.


  • 17 RGB LEDs
  • Extremely accurate real-time clock (RTC) with integrated temperature sensor
  • RTC backup power supply
  • 3 Buttons
  • Piezo buzzer


  • Same form factor as Arduino
  • Compatible with Arduino UNO
  • Operating voltage: 5 V via Arduino (USB or 7-12 VDC jack)
  • Dimensions: 68.6 x 53.4 mm
  • Weight: 19 g

How to read Binary clock shield

  1. RTC DS3231 - extremely accurate real-time clock
  2. KLJ1230 - piezo buzzer
  3. WS2812B - RGB LEDs
  4. Buttons
  5. RTC backup battery holder for CR1220 3 V coin cell
  6. Arduino connectors

Binary clock shield for arduino

Subscribe to the Crowd Supply newsletter, highlighting the latest creators and projects: