DS1307 is a Real Time Clock IC (RTC). This IC is used to provide time data. The time allotted starts from Seconds, Minute, Hours, Days, Date, Month, and Year.
This IC requires additional external components such as Crystal and 3.6V Batteries. Crystal is used for clock sources. Batteries are used for backup energy so that the time function is not stopped when the main supply is cut off.
I suggest to buy a DS1307 module that has been equipped with external components.
- Arduino Nano V.3 - ( https://www.utsource.net/itm/p/7929940.html )
- RTC DS1307
- Jumper Wire - ( https://www.utsource.net/itm/p/9221305.html )
- USB mini
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Step 1: Connect DS1307 to Arduino
Connect DS1307 to Arduino Nano according to the picture or table below.
DS1307 to Arduino Nano
VCC ==> +5V
GND ==> GND
SCL ==> A5
SDA ==> A4
DS ==> NC
Then, connect Arduino to the Laptop / PC using Mini USB.
Step 2: Add the DS1307RTC Library
The DS1307 library can be downloaded here:
After the download is complete,
Open "Skecth ==> Include Library ==> add .ZIp Library"
Find the library file that has been downloaded.
If it is successful, close Arduino and open it again.
Step 3: Choose Arduino Board
Open the tools and select the Arduino board according to the picture above.
Board "Arduino Nano"
Proccesor: "ATmega328P (Old Bootloader)"
Step 4: SetTime Sketch
There are two sketches that will be used. The first sketch is "SetTime" used to set the time on DS1307 to match the current time. the second is "ReadTest" used to display the time count.
Upload SetTime :
Open File > Examples > DS1307RTC > SetTime
After Sketch is open click upload and wait for a few moments.
If the upload process is complete, open the Serial Monitor to see the time set.
Step 5: ReadTest Sketch
Upload Sketch "ReadTes" to execute timed function.
Open File > Examples > DS1307RTC > ReadTest
Click upload and wait a few moments. After the upload process is complete open the serial monitor to see the results.
Step 6: Result
If successful, the serial monitor will display as shown in Figure 1.
If the DS1307 Module is not installed or not connected to an Arduino board, the serial monitor will display as shown in Figure 2.
Step 7: Other Articel About RTC
You can use the LCD or 7-Segment Module to display the time generated by the RTC.
If you don't know how to use it, you can see my next article on "How to display time on the LCD" or "How to display time in the 7-Segment Module" in my next article.
Thank you for reading this article, hopefully it's useful.
If there are questions, just write in the comments column.