All Questions
6 questions
1
vote
1
answer
600
views
Why the unsigned long is overflowing?
I want to convert hour to seconds but unsigned long is overflowing, here's the code:
#include <Wire.h>
#include <DS3231.h>
RTClib myRTC;
unsigned long seconds;
char timestr[9];
void ...
- 804
3
votes
2
answers
1k
views
Set control register to low in ds3231 rtc
I have been using ds3231 rtc module for keep tracking and make alarm along with backup battery. when I used it for first time it worked fine. but now it doesn't keep track my time when the power lose ...
1
vote
2
answers
4k
views
Real Time clock module error-DS3231
This is not a code error I have been using DS3231 RTC module with battery. When I bought this module It worked perfectly now when I get it to use, The time is running perfectly. when I set the current ...
0
votes
0
answers
249
views
ds3231 rtc module weekly alarm
I have a ds3231 and Arduino UNO and I need to get an interrupt from ds3231 once a week for example every Fridays. I've searched a lot in the internet and forums but did not find any library or code ...
- 63
0
votes
1
answer
84
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Maintaining time in Arduino
I am working on development of alarm clock using Arduino.
No doubt RTC will be the best but it increases the Price of the project. Also I opened a digital clock (which I purchased online) and I see ...
- 59
2
votes
2
answers
844
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Using RTC DS3231 + Arduino UNO to calculate time lapsed [closed]
I am a beginner with no coding background.
I am trying to figure out an alarm that tells people how long they have been sitting on their chair.
The concept is very simple when the person would sit in ...
