Arduino - DS1307 RTC

In this video we will be looking at how to control a Real Time Clock. RTC using the Arduino Leonardo.

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[mountainbiker]

Such an amazing video. Been through many others but none are as useful as yours. Got my time module working.

[linusmiranda]

Sir this video tutorial of yours has helped me a lot in my project. I really want to thank you. Cheers!!

[Ultraread]

Very nice job.
This is the simplest way i have ever seen that someone uses DS1307.
I have joined this code with some other codes and i have great result.

thanks

[mariokiefer]

i am new in programming an arduino and i have a question i need a time 17:59:59 (read it) and will set an output 13 HIGH for 10sec how did i make that. endtime 18:00:09 set output pin 13 LOW

[rccanuck]

Can an rtc send a signal to an Arduino to make a pin go high once an hour? If so any clue on how to go about it ?

[cupbowlspoonforkknif]

I didn't find the explanation of the circuit useful because I have a data logging shield but the code walkthrough was great. Thanks!

[Santosh-tqnj]

Very helpful tutorial. But I have a little problem. I removed the lines with 50s and just added the lines to switch the led off after a second after its on at 30s. Now after it is off the time in the serial monitor suddenly switches to 2000/0/1 0:1:0 or something like that.

[shubhamnsun]

Sir what's that some ic kind of thing on the breadboard is it necessary for the circuit

[gonza]

hello im new att this. i wonder if its posible to make a line that says that i like the led to start when i press a bottom and be on x time and then turn another light for a xtime
maybe 72h

[tobyran]

i want to turn the servo in specific time.it this right. pls help

if (now.second () == 02)
{
myservo.write(100);
}
Serial.println();
delay(3000);
}

[isuru]

Great work misperry. Just wondering whether you can explain how to attach a LCD to this project which can display time and date. Thank you very much

[yuannwang]

I am having issues getting this to run on my serial monitor. I have copied the code exactly the way it was provided but the date and time simply won't display.
I managed to narrow down the problem in this section of the code:
rtc.adjust(DateTime(2015, 5, 21, 18, 0, 0));
DateTime now = rtc.now();

By commenting out this section, I can get the serial monitor to run a simple text message. But with these two lines active, nothing is displayed. Any suggestions?

[kararsabih]

Hi, first of all thanks for this video I've download the library into arduino but i have this error ==>
sketch_mar06a.ino:20:20: error: RTClib.h: no such file or directory

[jonathanaeruthayan]

Hey! Great video!
I have one problem. My serial monitor does not display anything. I have set the serial monitor to 57600 baud, but still doesn't work. Any ideas why?

[gherzel]

could you help me? there is no display in my lcd.

[RoSiYou]

Hi, do I get this right, if I remove rtc.adjust line (just set the time once) then module should count itself (i have one with battery on) and when I remove power and connect it again it should display current date/time?

Instead upon every reset/power disconnect just displaying fixed values which was set with rtc.adjust and not counting.

[seamusflint]

Can you add external buttons to change time without the use of computer?

[nikhil]

does the same library, class and functions work for any rtc???

[thienkyo]

Thanks for amazing video. Can I ask u a question? I use RTC module DS3231, i get the time and everything is like what u showed in the video until i turn off the arduino, after 5 minutes I turn it on. In the serial port the time continues where it left off which means 5 minutes later than real time. Can u tell me where i did wrong? I think with the RTC module it is supposed to keep time without the power thanks to the battery.

[trantrung]

how can i get day of week. ex: sunday?