![]() Make an audible alarm with the MP3 module.“RTC” for making the date and time tick.These buttons are used to set time, calendar & alarms.īutton B1 = Button B1 selects time or date parameter like an hour, minute, day, date, month.īutton B2 = B2 increments the selected parameter.īutton B3 = Button B3 selects the parameterīutton B2 = Button B2 increments the selected parameter.This article was translated to English, and was originally published for deviceplus.jp. 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☌). ![]()
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