In the setup section of the demo example code we can notice that there are three line that we need to uncomment in order to initially set the day of the week, the time and the data. The RTC DS3231 module uses the SPI Protocol. The SDA and SCL pins of the RTC DS3231 Real Time Clock module are connected with the Analog pins A4 and A5 of the Arduino. Luckily, there are already several libraries for the DS3231 RTC which can be found on the internet.įor this tutorial I chose to use the Library made by Henning Karlsen which can be found and downloaded from his website, So once we download and install the library we can use its first demo example to initially activate the clock of the RTC module. The Vcc pin of the RTC DS3231 module is connected with the 3.3 volts pin of the Arduino, while the Ground of the DS3231 module is connected with the Arduino’s Ground. However, when it comes to programing a communication between Arduino and an I2C module the code isn’t that small and easy.
Once we connect the module we need to program the Arduino Board to work with the Real Time Clock. Guide for Real Time Clock (RTC) Module with Arduino (DS1307 and DS3231) Introducing the Real Time Clock module Where to buy Pin Wiring Example: Displaying. As an Amazon Associate I earn from qualifying purchases. Breadboard and Jump Wires ……… Amazon / Banggood / AliExpressĭisclosure: These are affiliate links.Arduino Board …………………………… Amazon / Banggood / AliExpress.You can get the components needed for this Arduino Tutorial from the links below: So all we need is 4 wires, the VCC and the GND pins for powering the module, and the two I2C communication pins, SDA and SCL. So once we download and install the library we can use its first demo example to initially activate the clock of the RTC module.
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