Help needed

Using Arduino Project Guidance
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How can you make a clock, that will have the right time? What do you have to code in to have real time showing and counting on an lcd, because my shafty timer just doesnt cut the ribbon. Im interested, please help me.
Thatnks in advance.

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How can you make a clock, that will have the right time

Caesium?
Rubidium?

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Something like Using an Arduino as an LCD clock; no guarantee how correct it is.

Found with arduino clock lcd; look at a few more examples.

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1200×1600 248 KB

Real time clock + Arduino + OLED, that's what you need?

D.60

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Search for 'DS3231 RTC' about $2.00 USD.

If this is going to be plugged into AC mains, you can use the 60Hz frequency as an interrupt (unless you have 50Hz).

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I took my DS3231 for 0.30$
You can buy the module under 1$

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