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DS3231 RTC Alaram Clock To Switch On Relay

  • The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.

Library

Features

  • This sketch will make an interrupt at Alarm set time on PIN 2 of arduino uno which will then activate the NPN transistor to switch on the LED which is connection on the NO(Normally Open) connection.
  • The schematic and the wiring is present within this repo

Installation

  1. Before downloading the sketch install the DS3231 library that is specified previously.
  2. Download zip archive from the github repository at https://github.com/himadriganguly/ds3231_alarm_relay_switch.
  3. Do the wiring using the breadboard diagram or the schematic diagram.
  4. Upload the code and the RED LED will turn on every 10th second.

Author

  1. Himadri Ganguly https://github.com/himadriganguly/