![]() You can refer to my thread for more discussions. So I started to search on the web and ask in arduino forum about this. When I first trying the new library, the example given only can display date and time and it does not mention about how to display the day of the week. In my case, I am using a 20 x 4 LCD screen. Then the set date, time and day of the week will be displayed on a LCD screen. What this code do is basically just set the time and date according to when the sketch is compiled. I bet you will like it when you try it □Īfter that, I uploaded the below coding to my arduino UNO. This library is easy to use and able to get the date, time and day of the week accurately. The name of the library is RTClib which you can download it here: RTClib There is a pretty easy to use library for this purpose. The R3 value normally to be 220 ohm/330 ohm as a current limiting resistor. Next, wire up the LCD according to the schematic below: This is due to the reason that DS1307 communicates through I2C interface. Two 10k pull up resistor s are at the SDA and SCL pins. Remember not to connect supply voltage of more than 5.5V or else you will get the chip burnt. However, we choose to use coin cell battery as it is small and easy to carry/install. You can use any type of battery with volatge range from 2.0V to 3.5V as shown above. So, it is not necessary to use coin cell battery as the backup battery. ![]() First of all, connect the DS1307 circuit as below: Easily available in any electronic store. This is the backup battery(CR2032) and its holder. The hardware that you need for this are : In this part, I will roughly explain about how you can get started to have your own DIY digital clock! This video basically just show on a basic role of a digital clock that can display date, time and day of the week. The IC basically is able to count the date and time accurately and it will continue its counting if the backup battery – coin cell battery is there although the mainsupply to the IC is cut off. What is DS1307 IC actually? Well, it is a Real Time Clock (RTC) IC that is simple to use, low cost and easy available. ![]() In demo mode, the clock faces change one by one at a certain time.In this article you will learn how to make a digital clock using Arduino and the DS1307 RTC IC. In this mode, the selected time is counted, which can range from 1 to 60 minutes.Īnd finally comes the Demo mode. ![]() The next press is followed by countdown mode. Now with a long press of the button we enter the Alarm set mode. Next pressing the button we enter the display of the alarm. The flashing light indicates the setting mode in hours, minutes, and seconds. To set the correct time, hold down the button for more than two seconds. Standard clock with 3 dots red for hours, green minutes, blue for seconds Moving the rotary encoder left and right changes the faces of the clock: There are 6 different faces. 60 Leds WS2812 ring, made of Four Quarter circle neopixels with 15 LedsĪfter switching on, (with 3 short presses) we enter to clock face changing mode. The device is very simple to make and contains only a few components: I made only a small hardware modification to change the light intensity of the LEDs. The code is taken from the Open Source project "Rise and Shine LED Clock". The clock would need to be powered by a Power supply of 5V/3A or more. The physical housing for the desktop clock is based on the dimensions of the neopixel ring. The ring holder is made with a 3D printer and you can download the.
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