Arduino Project: Real time clock (RTC) and temperature monitor using the DS3231 module.
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- เผยแพร่เมื่อ 3 ต.ค. 2014
- Arduino Project: Real time clock (RTC) and temperature monitor using the DS3231 module.
In this video we build a Real Time Clock using the DS3231 chip.
💻 Code & Parts: educ8s.tv/arduino-project-real...
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Fantastic tutorial on the D3231 RTC. This is the only code and wiring that I could get working. Thank you SO much!
Ronnie Tucker Thank you! I just visited your channel and your website. You are doing a fantastic job. I will contact you soon in order to make me some doodles!
with the 3231 have you used and led for teadout including temp. I having trouble with that
Thanks a lot, this helped me install my RTC
Thanks a lot for the tutorial, very helpful. A question,
with the command lcd.print (t.wday); in the void loop ()
it returned in the lcd 0 while I declare day of the week 6. Do you have any idea?
Great job and presentation. How do i interface a keypad for setting incubating periods that will be displayed on the LCD. And a reminder with GPS
I wrote a small function to help create the time string:
String setTime(String year, String mon, String day, String dW, String hour, String minute, String sec){
String dT = ("T"+(sec+minute+hour+dW+day+mon+year));
if(dT.length() > 16 || dT.length() < 16){
return ("Incorrect Format!");
}else{
return dT;
}
}
So when calling parse_cmd its a lot easier to the eyes
parse_cmd(setTime("2016","02","08","1","21","51","00"),16);
+Bruce Berrios Good job!
+Bruce Berrios this works like a charm tysm
Bruce Berrios
Very nice version with code I can follow and utilize . Thanks for sharing ! I have been looking for a reliable RTC and this looks like it will do the trick .
Bob
what to change in the code in order to use it with two 320*160 module p10 displays (beginner) :p
Nick , as always great presentation. I got all the necessary parts,will finalize this project tomorrow,God willing. Will post follow up. Thanks again.... Your code worked for my df mp3 Sketch in the other Tutorial.
Is there anything you can add to the code to display 12 hour AM/PM time and Fahrenheit temperature?
Thanks a lot! Congratulations for teaching us! God bless you!
god? ... god is just an invention and that invention kill people all around this planet
thanks for posting this. Just to say to other users that if you get an error at line 135 then change "boolean flags [5]' to 'byte flags[5]' at lines 135 and 146 then it works (found on Arduino forum)
Thanks for this easy instruction! Its very easy to rewrite your code if you have a I2C display.
Hi . Can i make a servo function at a certain time of the day using tis code as a base ?
Thank you for the video, info and sketches. Now everything works 100%
Nice to read that everything is working for you! Cheers!
Dear friends,
I recently found your video about RTC modules, I followed the instructions and the module worked fine.
But I modified the original code, in order that the display also shows the day of the week, for this I added the printDay function who works in the same way that the printMonth function:
void printDay(int wday)
{
switch(wday)
{
case 1: lcd.print(" Mon ");break;
case 2: lcd.print(" Tue ");break;
case 3: lcd.print(" Wed ");break;
case 4: lcd.print(" Thu ");break;
case 5: lcd.print(" Fri ");break;
case 6: lcd.print(" Sat ");break;
case 7: lcd.print(" Sun ");break;
default: lcd.print(" Error ");break;
}
}
The problem is that the value of the wday variable is always 2.
I made a test setting different values for the wday in parse_cmd function, but the display always shows Tuesday.
I tried to find the bug in the code, but I'm just a beginner. if you could help I would be very grateful.
Thanks and best regards,
Angel M. Muñoz
Madrid, Spain
Muy bueno el tutorial, me gusto mucho.perfectamente explicado
Tengo una duda
Se podría controlar un relé con este RTC para hacer ciclos de ON/OFF cada 12h(O cada X tiempo)?
tengo unos conocimientos muy muy básicos de programación y buscando no encontré muchos codigos que pueda utilizar
Muchas gracias de antemano
Thanks for the video. I was wondering.... I wrote a sketch that uses a waterproof thermistor to activate a relay while showing the temp on the I2C 16x2. How hard would it be to adopt this code to do that and activate another relay based on time (like a lamp timer)?
hello!
Thanks for your tuto ,but i have a question about the code :After many tries I finaly get this message :
'printMonth' was not declared in this scope.
could you telle me what's wrong please thanks!
How does the program know if the time you enter is p.m. or a.m.?
This is important for the program to know when to change the date.
Is this in 24 hr format?
Great tutorial and thanks for code , finally got mine working
Hello, can you store and recall a temperature with the date and time of the mesurement or you need a log with sd card? Thanx
Hi There,
Thanks for all of your awesome videos , fun and educational :)
I have a question which is probably simple , but i can't seem to find the answer.
How can read the value of the day of week , 1-7 etc?
I would like to edit the code so the month cycles between Month and Day.
I tried (t.wday); but this didn't return the correct value.
Also I would like to address the 32k of memory on this module to store temp snapshots over the course of 24hrs and store it for future use in the 32k memory.
Hope you can help , many thanks again for all your great work.
Can we set only the date and time and the day should assign correctly to the year in this program???
Thank you bro. Regarding temperature issue. i wonder how is it working? using ADC or digital sensor inside. i mean what kind of signal. I am reading datasheet now and see :"Temperature conversion current". If i am wright, this one have 2 digital ICs, one is timer and one is temperature and communicated by I2C. Thanks
Greetings sir. Thanks for your coding, I was able to make use of it to my final year project. However, there's one thing I need to ask you with, since I'm really not good on coding.
It's about how to insert alarm clock coding to your coding. There's few more codings out there, but I feel like using yours instead, since you use almost similar components like mine.
By the way, I'm using Arduino Mega, RTC DS3231, LCD 16x2 with I2C, and a buzzer.
Thank you in advance. Your attention is appreciated.
Hell there, this is a great tutorial! Can I ask You a question?
I am new at Arduino with a big dream! I am planing to build a device with 6 different analog sensors, a clock like Yours, a 4x4 keypad, a simple 4 line display and some 3 or 4 output devices like valves, servos and actuators! So, the question is, as I am having difficulties figuring out, what board to get to accommodate all the connections?
Thanks!
you always done good job
could you please make a tutorial on clock without RTC and that can be set manually by buttons waiting for valuable response
Thanks for the efforts
HI. Thank you for your video. I have often made some of your great projects.
Unfortunately I think the code link you provided for this one must be corrupted. Do you think you could provide a new link for the code please? Thank you
Congratulations for this video!
I have downloaded the Rodan library with the ds3231 program, but it is different from yours. I included the "Display" program from the library, however; it will not show the time or temperature on the display. I have checked the baud, and set the pin outputs from the Arduino. When I look at your program, it has code differences from the newer one. Can you help me find the same ds3231 code that you are using? even going to the location you show in "show more", doesn't give the same code you have. thanks for your advice in advance
Συγχαρητήρια για την τρομερή δουλειά σου φίλε
Can I use DS1302 RTC w/ this code & library?
great tutorial, I managed to make it very quickly.
I would love to add to this simple alarm with simple buzzer. First I wanted to make a sound every hour or whatever, then i realised that it would be nice to make of use those buttons on the LCD board and to be able to set alarm with it.
Please could you make a video making this with special glance on the code for it.
hi. Did you save the data in an excel sheet as the sensor was recording it?
Big thanx! It's very good tutorial! All works fine and correctly!
Great ! Thank you for your time !
Thanks. That was very helpful. Saved a lot of time.
Code worked perfectly. Thanks a lot! Can the buttons on the shield be incorporated into the function of this device? If so what lines of code would I add?
plz..bro, give me the code in my mail adress...or here.
mail :- mmunna0221@gmail.com
Thank you so much for this video!!!
thanks that looks good.
Hello Sir,
Thank you for sharing this video.
Your videos are really helpful and well explained.
0:49 What is SCL/SDA/VCC/GND on the right side of the module for? And why is it not soldered?
thank you very much, you have been kind and useful!
Hello, would have you the sketch (source code) of this application?....
Thank you for passing on(transmitting) him(it) with libraries(bookcases) "to zip" it
Καλησπερα, θα ηθελα να με βοηθησεις οσο γινεται σε δυο πραγματα που θα ηθελα να προσθεσω γιατι αφορα εν μερη και την πτυχιακη μου. Θελω π.χ. για μια ωρα την μερα να μπορω να αναβω ενα led και μετα να σβηνει. Επισης στο παραδειγμα με το alarm που περιεχει η βιβλιοθηκη πως γινεται να το ρυθμισω να ενεργοποιειται μονο απο Δευτερα μεχρι Παρασκευη?
Ευχαριστω.
When I look at the example my code does not include the #include "rtc_ds3231.h".... any idea as to why? Keeps causing me issues not having that.
Hi, how can i use a DS3231 RTC module with Arduino Uno 3 plus LCD Keypad Shield.? The LCD overlaps exactly the Uno exactly so how can i plug the RTC module, i am wondering if i can use the hole in the LCD Keypad shield . If anyone have the answer , please do let me know . I am just starting fyi. Thanks in advance.
Is there any way to get accurate sub-millisecond timing from this thing?
Hi, nice video, but I had some problem, could you help-me? I have an error "DS3231_INTCN' was not declared in this scope", how to solve this?
Thanks.
Thanks for the tutorial, it's great! I have Arduino Uno and I want do do a breathalyzer. When I plug the display in Arduino Uno, I don't have any free pins. How can I connect the alcohol sensor with the Arduino&display? Do you have any idea how can I solve this problem?
you have to use an Arduino mega.
I tried several times but " compilation Error" appeared. One major problem I see is counting the time programming totals 15, not 16 as claimed. Please correct me if mistaken. Also the LCD bought from link does not match that in video. Thank you.
hola muchas gracias por el video , podrias decirme como activar 2 o 3 salidas a cierta hora y por un cierto tiempo ???
Very good explanation! Congrats!
hey. nice project!
i really like it.
can i make it with arduino nano?
then how i connect wires and what about the codes?
Using this rtc can I trigger a relay on and off. Can you help me with the codes
hey man can i ask if ur code is same for arduino uno (beginner here ) and can u explain how to add the temp sensor in ur code (i'm using ds18b20 sensor) thanks man. great vid btw
Thank you for sharing
your video wery sooper am stading this metheed . your speeche ant clas wery naise
am wery happy to waching this video
thanks sir
Awesome! It's works perfectly.
how do i interface the real time clock with a pulse sensor using ardiuno
Μπορώ να χρησιμοποιήσω μια διαφορετική LCD οθόνη από αυτήν?
I just finished connecting all the hardware but never done coding before can you please help me out. so the only thing i download is the library you provided. which one do i download the adjust or the other one. can u please tell me every library i have to download. my project is due in 2 days and i dont know what to do i bought everything based on your video thanks
works at arduino nano?
I RECIBE AN ERROR: rtc:19:17: error: 'DS3231_INTCN' was not declared in this scope
ANY SUGGESTION? THANKS
thx for sharing..it worked...!
+Buminda Nawagamuwa You are welcome!
Hi, thanks so much for your tutorial - would you be able to help me as I'm having trouble with the values on the screen? The clock, temperate and date all appear to be wrong (00:00:00, 1/1/1990, 30.3degrees) however I've wired everything up correctly, implemented the code and changed the string to the correct time as you suggest in the video. I believe the Serial Monitor is also displaying values incorrectly.
When I unplug the board from power and then replug back in - the clock does not reset so I'm assuming the RTC is not broken.
Would greatly appreciate your help as I'm very new to this, thanks!
Adam Mussa It seems that there is an error in setting up time. Do you have a battery installed?
Educ8s.com Hi, thanks for your reply! Yes I have tried 2 batteries in the RTC and it is still not working! But I'm running power for the Arduino from my computer via USB. Should I run this from a wall outlet?
Would I also need to calibrate the RTC using an alternate power source first before getting correct results?
Let me know your thoughts and thanks again
Adam Mussa No, from USB is fine. You have to set time while having a battery installed. If you remove the battery the time will be lost. If nothing works, your module may be faulty.
Educ8s.com Thanks for your advice!
how could set time anytime arduino is working, like programing time
Hello!, You make a good video about this RTC DS3231!
So, I want a help in my project, if you can be explain a something.
Do you know how to set alarm of RTC ? And get this alarm to wake up arduino ?
I know how wake up arduino with an external interrupt, so I wanna get alarm to make this interrupt.
Thanks for atention!
JOÃO DANILO SOUTO MAIOR NOGUEIRA NETO Hello, thank you for your message! What you propose is very useful. I am going to make a video on that. Stay tuned!
Thanks for your help!
JOÃO DANILO SOUTO MAIOR NOGUEIRA NETO I have done that, only I didn't get an interrupt at all. I don't know why, I did everything right in the code. I think interrupts are unreliable. What I did was a very simple solution. When I set the alarm in my code, I write this data also to the alarm registers of the RTC. In the setup I made a function which reads the alarm data out of the RTC and stores them in variables for the program. So when arduino loses power it will read out the alarm data when it starts up again, so you will get up in the morning.In the loop I use the following line of code for the alarm if(alarm_hour = hour && alarm_minute = minute && second == 0 && alarm_bit == true) ALARM();
so when hours and minutes matches and the second counter = 0 and when the alarm_bit is set, only then the alarm will go off.
Is it possible to add Date & time by using ds3231 & displaying all the information one after another in same lcd ???
+Maverick Leo Yes of course you can do that!
Hello, I used your sketch according to the instructions, but after turning off the power, my watch resets. Im asking for help.
cuando lo desconecto todo esta bien ,,pero no los minutos me los cambia,,porque sera?? gracias
Hi, can you help me with a code that marks the elapsed time. example: day: hours: minutes: seconds
hola! estimado, mi ds3231 me esta marcando la hora 25:00:00 cual podria ser el problema? el codgo esta bien,
Hi! I am making one of this kind of monitoring and I only have DS1302 module. Is it okay to use this? what is the difference between ds3231 and ds1302 module? Hope you can response. Thanks
The DS1302 does not contain a temperature sensor.
can i use arduino uno for this project?
i am asking this question because arduino uno doesn't have scl and sda pin out
+Mir Sahib SDA and SCL is I2C (i square c) pins. Serial Data Line (SDA) and Serial Clock Line (SCL).
Arduino Uno has that pins on 27 and 28 pins.
www.arduino.cc/en/uploads/Hacking/Atmega168PinMap2.png
is the time in 24 or 12 hour
how to fix parse_cmd was not declared in this scope?
Great video but how can connect the rtc to an Arduino nano?
Can i store temperature data inside the memory? I want to do temperature reading and storage for 1 hour interval.
Hello Nick. After downloading your code and unzipping it with WinRar, upon verification ; message appears stating "Compilation Error". Several attempts but message persists. With Rodan's Sketch same message. I am using all exact components as in your fine Video. Any tips?. Thanks.
VERY GOOD VIDEO THANKS YOU, DESERVES AN LIKE
Hello sir, can aurduino real time clock can be used to power on 4 stepper for different sets of time? Thanks
Sure, you can do that!
educ8s.tv please give me some suggestions what i need and what the code would be? Thanks sir
Hey there!
I really like your videos, they are very good. But I have a little problem...
I'm using the IIC OLED Display 128x64, as the same way as in other tutorial of yours, and this Display also uses the SDA and SCL pins (I use a Arduino Mega).
There is anyway to conect the OLED Display AND the DS3231 Time Shield at the same time?
Thank you, and keep doing those awesome tutorials!
Gabriel Pauka You can connect both in the same I2C pins. I will make a video on that.
Educ8s.com Wow, it really works! I'll be following your channel and waiting for this video. Thanks!
dallo sketck del video che mostri allo sketck della libreria ci sono molti punti mancanti perche ?
hey I want to reset my temperature at midnight.
can u explain me the code,I only want to know how to reset the temperature at a certain time.
why are you using two DS3231 libraries?
The Code is not really working anymore right, cause the programm says that ds3231.h is no such file or directory
thanks that helped alot
Hi. Is there a solution to have the time printed in the arduino serial monitor?
+Xun Hu Yes, you can use the Serial.print() command for that.
que feliz me siento que hay personas las cuales les guste compartir la información y no son egoístas muy buena explicación me aclaro muchas dudas de principiante con este dispositivo mil gracias
Muchas gracias. Saludos desde Grecia.
Hy.
i have 2 questions:
1.Can i use DS3231 module ic2 communication with arduino nano?
2. in my project, i just need get time and get hour. There are other module with fewer resources?
Thank you for share with us! nice video =)
hi me and sebastean are bilding a arduino with a dht22 for control humidity and temperature. what we need is program diferent temperature and humidity in laps of time. the first 72 houers it shuld be 4 degreas and 85 % humidity. the 72 houers after that 24 degres and 90% humidity after that continue 14 degreas and 90 % to make salami :) . what we having troble is to make the time code we are bouth new programing but we find it facinating. is it posible you can guide os in the right direction? we dont even know what the name of what we want to do is. thanks in advance
im thinking of using to arduinos one that comand time and one with functions
My DS3231 isn't keeping track of time when i power it off, any ideas on how i could fix this? Also, is there any way I can convert Celsius to fahrenheit?
Possibly dead battery or bad battery connection. °C x 1.8 + 32 = °F
does anyone know how to change the time to a 12 hr format fromat 24 hr format in the code?
schematics? how to connect a stand alone 2x16 lcd????
sir how to make a daily task schedule remainder using arduino and lcd i2c
please guide me
where would i put that im using u sketch
Hey Spartan!!!, this source code can be used on Arduino nano V3? thanks for they tutorials.
Yes ofcourse, but how are you going to connect the display?
Directly to the arduino board, because I don´t have the LCD shield with push buttons.
Αδερφεμ πολυ καλά τα βιντεάκια σου , αν μπορούσες να προσθέσεις και ελληνικούς υπότιτλους θα μας βοηθουσες ακόμη περισσότερο, ευχαριστώ.
I can't compile your LCD/RTC sketch, keep getting "fatal error: rtc_ds3231.h does not exist" I have downloaded rodan/Ds3231 library and also changed " " for < > for the #includes in your code as I assume the " " was an error but still nothing will compile. Any ideas? thanks.
Les Saunders Hello, from what you said, there must be a problem with the library installation. For some reason Arduino can't find the library. You don't have to change the " " in the library it works like this as well. try to install the library again.
I had the same problem, I fixed it by finding the rtc_ds3231.h file in one of the example directories and copying it into the main RTC library directory.