That's as far as we've gotten so far I'm about to start designing the "custom numbers"
https://youtu.be/Ihku_Cox9Dk

The function was missing from the program I wrote; it was entirely my fault.I skipped the calculation...We'll be testing the updated version soon

bug .....

I think I've found the root of the problem: when I pressed the button in the settings, it didn't increment the variable's value; the calculation was missing: `hour = hour + 1`, `min = min + 1`, ... A trivial mistake...

It works in other classes whether I call it from an interrupt or run it from the main program, so I don't understand why it doesn't work here (just the setup); reading the value works perfectly.The refresh rate is set to once per minute, and that's when I set the value

Is it possible that the display is interfering with the RTC's operation? I'm using the display on Channel 1 and the DS3231 on pins RB0 and RB1. It reads and displays the values, but I can't configure the RTC.

https://youtu.be/OYZQdaD63k8 Here's how the test version works

That's all he knows so far

With a few minor tweaks, it'll turn out just the way I imagined. Thanks so much for all your help!

Thank you, I'll take a look