Using DS3231 RTC IC in projects

Using Arduino Project Guidance
1

I want to make a digital clock project, but with my own PCB design. My question is, if I use a DS3231 IC, will it know already what to do, or I have upload something in order to make the AtMega32U4 operate with it?

2

Yes

3

Check the specs. Eventually You need to set the clock ones.

4

What do you mean by "need to set the clock ones"?

5

"Once"
(Just a guess)

6

No clock is fabricated being set to the current time and running from there.

7

I meant upload firmware or something like that to the IC itself, of course I have to set the clock once it is done :smiley:

8

You do not need to upload anything to the RTC apart from setting the correct time

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9

Then "No". The circuit has all functions built in for setting, reading etc.

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10

Thanks to all of you

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11

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