Connecting an RTC
To control a system, it is very important to have a circuit that can read the time; it can help control the outputs from the Raspberry Pi or detect an action at a specific time. We will interface an RTC module DS3231 with the Raspberry Pi.
I2C setup
The first step is to enable the I2C interface by performing the following steps:
Select Advanced Options:
Enable the I2C option, as shown in the following screenshot:
Select <Yes> on the next screen:
Select <Ok>:
Then select <Yes>:
Next, select <OK>:
