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Small Buzzer for sons disc golf discs.

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nlhamsley

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I need help making a super small buzzer powered by a large hearing aid battery. I am in need of it being around the size of a quarter to a half dollar and simply must buzz every 10 or so seconds when activated. The simpler the execution the better. Any help or diagrams would be appreciated. He continues to lose disc and I would just like a device that can help us hear where the disc is when we are standing on top of it.
 
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