I am using a Leonardo to create a replacement control board for an air conditioner. The Leonardo is taking information from sensors, and controlling a bank of 8 relays. Part of the system requires an alarm (an LED) to remind the user to clean the air filters every, say, 1 year. What hardware do I …

1 year timer with Leonardo

Shpaget February 24, 2013, 8:34pm 2

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