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Lv 4
? asked in Science & MathematicsEngineering · 8 years ago

I want to make a small buzzer alarm? 10 points?

I have to make a small buzzer alarm as a project and i want to use it like the operation game board when you touch the metal with another metal it buzz with a red light. Please!!!!

can you give me with a website with a small simple steps with or without photos or video.

1 Answer

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  • fuzzy
    Lv 7
    8 years ago
    Favorite Answer

    buy a small cheap 9Volt buzzer, a 9volt battery clip, a 9 volt battery & a few feet of lightweight insulated multistrand wire. If you want a LED buy one of these too & a 1/2 W 1K resistor.

    If you cant solder (I suspect this is the case) build the circuit on a plank of wood using drawing pins hammered into the wood with the wires under the head.

    1/ design & make your large wire loop out of coathanger wire & attach it to the board .with drawing pins. Under one of these pins put the red wire from the battery clip.

    Make your small loop of wire you run along big loop & attach a 3' length of insulated wire to the handle end. Take the other end of this to a drawing pin on the board. Under the same pin put the RED wire from the buzzer and the longer leg of the LED. Join the shorter leg of the LED to the 1K resistor (another pin) & take the other end of the 1K, the black lead from the buzzer & the black lead from the battery clip & join them all together under another pin.

    Clip in the battery & test it.

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