“Our cat Penny has an internal clock as accurate as NIST. She starts meowing just a minute before each of her feeding times. We used to leave a note that said “I fed Penny” but this was not always helpful in keeping track. If I saw that note at lunch, I could not be certain that it meant my son fed her breakfast or my wife had just fed her lunch and Penny was trying to scam a second serving. The Arduino to the rescue! I built a box with a display and one button for each meal. Press the breakfast button and the display will show “At 8:03a Penny had BREAKFAST.” The timestamp comes from a Real Time Clock module connected to an Arduino Nano. As added entertainment, the Arduino plays “Warm Kitty” through a piezo speaker.”
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