This project shows how to connect an LCD screen to an Arduino Mega 2560 and use potentiometers (knobs) to adjust the screen’s contrast and control an extra function, like brightness. Explaining the ...
Saves in EEPROM the numbers of hours since transition, so that if Arduino is restart it looses at most 1 hour. The 1 hour resolution is a tradeoff betweem accuracy and EEPROM life which is limited to ...
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