Bottle Holder

This bottle holder uses a button to control an LED light. When a bottle is placed in the holder, the light turns off. Remove the bottle, and the light switches on, reminding you to put it back.

1 a piece of card board

2 a bottle

3 a few Arduino wires

4 a Arduino LED light

5 some tapes

6 a scissor

Fold the cardboard into a rectangle box with a empty interior

fold a square box with empty interior for the base with the cardboard

tape those two together

poke a hole in the square base bottom and stick the button in