What do you do if your kids are always leaving the refrigerator door open? Make a scrolling Arduino powered sign of course! It may be a bit overkill, but it’s hard to miss the large format LED matrix scrolling in front of you. Next step, shock audio alert!

We have 5 kids in our household, and with that someone is always leaving the refrigerator door open. So we set out to built this next Arduino project so that when the door is left open, the LED panel will activate as a reminder to check and close the door.

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Check out what he used to sketch his ideas on. Yep, it’s a Maker’s Notebook!

More about the Arduino refrigerator alert system

In the Maker Shed:

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Arduino Family

Make: Arduino