We have used a 5 volt AA battery and a buzzer. We also used a little light bulb and connected the buzzer to the battery. We put the battery in the battery holder and connected the battery holder's wires and connected it to the light bulb. We only made a prototype because it was really small and the light bulb light up a little bit. We figured out that the buzzer works if you connect it to the battery because I tried it out and it worked. We taped it to the cardboard with duct tape. If you want to see more inventions go to this website. Next week we will make it a little bigger and see if it works better if it doesn't we will make it a little more bigger and one more battery. We will need more voltage power to make the light bulb light up.
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