SOLVED: DS3231 Not Retaining Time After Reset or Shutdown
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- เผยแพร่เมื่อ 22 ส.ค. 2020
- How to make RTC retain current time.
How to solve DS3231 correct time problem. how to program rtc. rtc and arduino
Common problems with RTC is not getting the current time when the module is reset or has been shutdown. This video discusses some solution.
files needed for this project, libraries and sketch
github.com/myonline88/DS3231_RTC
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Thanks for this tutorial. It helped a lot with my project
Thank you! You helped me with my issue. I appreciate it.
Thanks alot...I knew the issue had to be the code but wasn't sure exactly what. Most answers from stackoverflow and google generally say the battery or the module is the issue so this is really helpful.
Thank you! Fixed my issue 💯
Thanks bro,nice tutorial & perfectly working
You are welcome bro. Happy Arduino programming.
Good job two day i wasted my time God bless you
This was really helpfull! Thanks you are the man!
You're welcome. Thanks for watching my video
If itt loses correct time after you unplugged it, power it again and let it Turned ON for several hours or even a day or more. It will retain its correct time.
@@myonline88 Hello, just wanted to know is there any way to solve the same issue with rtc ds1307 module
It could be possible. But I haven't tried it yet. I got busy with work and haven't have time experimenting on other module type.
@@myonline88 Ohk, np.
Laptop. No mobile. Par. Hoga. Kay.
Thankyou so muuuch!!!
You're welcome. Thanks for watching my video.
Hello. my projext is uploading fine but nopt counting up? so the current time gets uplaoded but then serial monitor does not count up. can someone please assist many thanks
added the libraries; however, I get the error code: 'class DS3232RTC' has no member named 'lostPower'?
The Library used in this projects is for DS3231 RTC module. Maybe you used DS3232 rtc module. If so, you need to search the net for ds3232 module and download its library. Also, the codes I have given here may or may not work with your ds3232 rtc module.
I want to use CASE and Switch to make every day's timining unique. Can't seem to get a DAY out of the library (such as SUN, MON, TUE or even Day 1, 2, 3) , looked at and tried the key words but could not get just a DAY to function. Any ideas?
I've been trying to figure that out too for many weeks now. Thank you for watching my video. Please tell me if you found a solution.
@@myonline88 There are so many RTC libraries to choose from, perhaps another might provide the function. I may just try to include the Grove 1307 Library, it has a nice DAY function.
@@myonline88 Day is DOW not day
Hello, what do I add to the code to include a 2nd relay, ive tried const int relay2, pinmode(relay2, output), ive tried changing the If statement Onhour2 to relay2, etc. all kinds of different configurations but it always conflicts somehow, is it not possible to add another output pin? works fine for one relay, but I need more than one.. Im probably just missing something simple.. Thanks
Then add another instance of digitalWrite(relay2, HIGH);
in the main loop section
@@myonline88 I did that but fir whatever reason one relay will come on and then the other off , then the opposite, I wonder if it has something to do with the Arduino timers conflicting. Ive even tried different pins on different timers, does it need to have "const int relay1=2" can it just be an "int"?
You should use separate digital pins. Yes, you can use int.
You should also use a transistor connected from Dpins to the relay to turn on/off the relay
@@myonline88 I figured it out, it wasnt the coding, I had the 2nd relay set manually to trigger LOW, not sure when I swapped the bridge connector, but it explains why it was turning off when the circuit was going to 5 volts. I did have it on 2 different digital pins. Thanks for respond
sing though
Does this only works on a Arduino that is going to be connected to a PC to get the time? Im having the same problem but i need to operate my arduino uno with a 5v power supply not a pc.
No. It has it's own Real Time Clock. Once you programmed it, as long as it has battery and is constantly powered ON, it will retain it's time. But when it is turned off for few minutes, it will lose its correct time. You may need to re-program it again.
@@myonline88good video thanks... you are using the coin battery ...then y its not updating the time...I
Allow it powered on for at least 24 hours or more. That way, it may retain it's updated time for a longer period of time. If you only powered it for few minutes and then power if off, it will normally lose its current time.
@@myonline88 i Googled about this function rtc.adjust() function....this function actually takes the value from p.c while compilation ....but you are telling it will retain the time ...so am getting confused
@@myonline88 I have issue retaining the RTC time , do we need to run this module 24 hr or more to retain the time or to remember time
Sir your title is : SOLVED: DS3231 Not Retaining Time After Reset or Shutdown.
I am using DS1307, it freeze at random time, while running and there is no further increase in time.
I mean time on display suddenly freeze.
sometimes if freeze after 8 hour , sometimes after 1 day. Even I switch-off the board and again switch-on. still it is freezed.
after further investigation. I find out this message "RTC is NOT running!"
please help.
Check if the battery is good and your connections are correct and reliable.
When I save time in ds1302 don't save in it
Will this code run the device connected everyday for the specific time
Or need to upload everyday
No need to upload everyday. It will run the code as long as the Arduino is permanently powered on. If the circuit is disconnected from power supply for a long period, the time.may not be current. If that happened, check it and re-upload the code if necessary.
My DS3231 increase 2 mints daily. Any one now solution.plz help
Try to update the system date on your pc, then reprogram your DS3231. If it doesn't solve the problem, please try another module. I had some problems in my module too. Trials and errors solved it
you didnt show the connection diagram. its bogus
Whatever you want to say. For others here who watched it and made it work, it's not bogus. Maybe you just didn't know yet how to connect the VCC, GND, SDA, SCL and INT and a single digital pin from Arduino and a few patience in reading the codes specially the pin assignments when it is clearly written in the codes from the github link I have given in the description box.
@@myonline88 Thanks bro. I found this video. I've been looking for a solution for this same problem. It worked. My pet feeder prototype project is working well now.
__DATE__ and __TIME__ are date and time when you compiled and uplaod the sketch on arduino. I'm sorry but you haven't solved the problem.. I solved it by adding the following lines of code after rtc.begin():
// clear /EOSC bit to ensure that the clock runs on battery power
Wire.beginTransmission(0x68); // address DS3231
Wire.write(0x0E); // select register
Wire.write(0b00011100); // write register bitmap, bit 7 is /EOSC
Wire.endTransmission();
Hello. my projext is uploading fine but nopt counting up? so the current time gets uplaoded but then serial monitor does not count up. can someone please assist many thanks
Yes it will as long as the coin battery is good and usable.