I created this as a digital doorbell of sorts which calls your phone instead of the loud, irritating sound of a regular doorbell ringing through the house. I also have the feature of being able to display whether you are at home or not to the person at the door.
I used two servos with a simple broken pencil on each, then glued a slip of paper with a blank space, the words "Not Home," and the third message "Coming." The paper runs across the rectangular hole in the box so as to display different messages depending on what the servos have been turned to.
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