![]() ![]() ![]() In the circuit, there are 3 push buttons: B1, B2, and B3. ![]() The DS3231 interrupts the microcontroller when there is an alarm (alarm1 or alarm2). SCL line is connected to analog pin 5, SDA is connected to analog pin 4 and the INT line is connected to digital pin 2 which is the external interrupt pin of the Arduino. There are 3 data lined connected between the DS3231 Module & Arduino board. The DS3231 module is supplied with 5V as the 20*4 LCD (JHD204). Underwriters Laboratories® (UL) RecognizedĬircuit Diagram: Arduino DS3231 Based Real-Time Clock with Alarm & Temperature.Operating Temperature Ranges: Commercial (0☌ to +70☌) and Industrial (-40☌ to +85☌).Low Power Operation Extends Battery-Backup Run Time.Battery-Backup Input for Continuous Timekeeping.Simple Serial Interface Connects to Most Microcontrollers.Active-Low RST Output/Pushbutton Reset Debounce Input.Digital Temp Sensor Output: ☓☌ Accuracy.Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month,ĭay of the Week, and Year, with Leap-Year Compensation Valid Up to 2100.Highly Accurate RTC Completely Manages All Timekeeping Functions.Additionally, the active-low RST pin is monitored as a pushbutton input for generating a µP reset. ![]() Two programmable time-of-day alarms and a programmable square-wave output are provided.Ī precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. 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 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. To design Arduino DS3231 Based Real-Time Clock with Alarm & Temperature Monitor, we need the following components. ESP8266 and DS3231 Based Real Time Clock (RTC)ģ. Arduino DS3231 Real Time Clock (RTC) with Temperature MonitorĢ. You can check the previous version of the similar project here:ġ. The DS3231 RTC has a built-in alarm function as well as a temperature sensor with a resolution of 0.25 and an accuracy of ☓☌ which makes this project easier. We have also added two alarm functions and temperature monitors to further extend this project. This is a simple real-time clock with time, day, date using Arduino UNO board, and DS3231 module. We are happy to present to you Arduino DS3231 Based Real-Time Clock with Alarm & Temperature Monitor. ![]()
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