RTC DS3231 Arduino Relay: Time-based Triggered Switches

RTC DS3231 with Arduino Nano for time-based multiple relays switch





  1. Real Time Clock (RTC) DS3231 (1 unit)
  2. Arduino Nano (1 unit)
  3. Jumper Wires (Male and Female)
  4. 4 Channels Relay Module 5V-12V (1 unit)
  5. RTC library 
  6. Wire library 
  7. DS3231 Arduino IDE codes


This development is part of Building Instruments installation project, funded by Brigstow Institute, UoB UK 2021.