Support temperature and humidity display, day and night mode switching according to brightness, countdown function (without power-down RTC, use EEPROM, manually press the button to add or subtract days)
Support message board function (messages are written into the program through the computer)
It is still far from many existing desktop clock projects, but the structure is very simple, with only Arduino and peripheral sensors, forming a series with several of my previous pure Arduino Nano projects.
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