If you are making a clock, and you would rather not recompile your code every time you want to set the time, here is a way you can do it using only two buttons. Notes: This code requires the use of an LCD character display, like for example this one , but the same basic idea would also work with …

Two-button clock

odometer June 26, 2016, 2:50am 3

stievenart:
Which RTC clock chip are you using. I see no reference in you code or the body of your post.

There is no reference because there is no external RTC.

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