The clock operates in either the 24-hour or 12-hour format with an active-low AM/PM indicator. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The RTC maintains seconds, minutes, hours, day, date, month, and year information. The device incorporates a battery input and maintains accurate timekeeping when the main power to the device is interrupted. The DS3231 is a low-cost, extremely accurate I☬ real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. S.N.ĮSP32 ESP-32S Development Board (ESP-WROOM-32) All the components can be easily purchased from Amazon.

ESP8266 and DS3231 Based Real Time Clock (RTC)įollowing are the components required for making this project. Arduino DS3231 Real Time Clock with Alarm & Temperatureģ.

Arduino DS3231 Real Time Clock (RTC) with Temperature MonitorĢ. You can refer to our earlier post if you wanna use DS3231 with Arduino Boards:ġ. The DS3231 RTC has a built-in alarm functions as well as temperature sensor with a resolution of 0.25 and an accuracy of ☓☌ which make this project more easier.

We will use DS3231 Real Time Clock (RTC) module to keep track of the correct time & date & display it on OLED Display using ESP32 as our microcontroller. In this project we will learn how to interface the RTC Module DS3231 with ESP32 Board and 0.96″ I2C OLED Display.

4 Circuit: ESP32 & DS3231 Based Real Time Clock.

Rtc ic ds3231 wire library