DS1307 Real Time Clock are widely available low cost I2C RTC modules. They come with a clock and a small battery, and when connected to Arduino, can keep track of real time even when the Arduino board is not powered.
In this Instructable, I will show you how easy it is to connect DS1307 I2C RTC Module to Arduino, and read the time from it with Visuino. I will use the Tiny RTC Module that I have, but it should be very much the same with any other DS1307 Module.
Step 1: Components
Step 2: Connect the Real Time Clock to Arduino
- Connect 5V VCC Power(Red wire), Ground(Black wire), SCL(Yellow wire), and SDA(Green wire), to the DS1307 RTC Module (Picture 1)
- Connect the other end of the Ground wire(Black wire) to Ground pin of the Arduino board (Picture 2)
- Connect the other end of the 5V VCC Power wire(Red wire) to the 5V power pin of the Arduino board (Picture 2)
- Connect the other end of the SDA wire(Green wire) to SDA/Analog pin 4 of the Arduino Nano board (Picture 2)
- Connect the other end of the SCL wire(Yellow wire) to SCL/Analog pin 5 of the Arduino Nano board (Picture 2)
- Picture 3 shows where are the Ground, 5V Power, SDA/Analog pin 4, and SCL/Analog pin 5, pins of the Arduino Nano
Step 3: Start Visuino, and Select the Arduino Board Type
To start programming the Arduino, you will need to have the Arduino IDE installed from here: http://www.arduino.cc/.
Please be aware that there are some critical bugs in Arduino IDE 1.6.6.
Make sure that you install 1.6.7 or higher, otherwise this Instructable will not work!
Step 4: In Visuino: Add and Connect DS1307 Real Time Clock Component
- Type "rtc" in the Filter box of the Component Toolbox then select the "Real Time Clock(RTC) DS1307" component (Picture 1), and drop it in the design area
- Connect the "Control" pin of the RealTimeClock1 component (Picture 2) to the to the "In" pin of the I2C channel of the Arduino component (Picture 3)
- Connect the "Out" output pin of the RealTimeClock1 component to the "In" input pin of the "Serial[ 0 ]" channel of the Arduino component (Picture 4)
Step 5: Generate, Compile, and Upload the Arduino Code
- In Visuino, Press F9 or click on the button shown on Picture 1 to generate the Arduino code, and open the Arduino IDE
- In the Arduino IDE, click on the Upload button, to compile and upload the code (Picture 2)
Step 6: And Play...
Congratulations! You have completed the project.
Picture 1 shows the connected and powered up project.
If you open Serial Terminal in the Arduino IDE or Visuino, you will see the date and time from the Clock (Picture 2)