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Millipede project question


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Hi Js,
A pager motor swings a little weight around and is used as the vibrator alert in a wireless pager or cell phone. I have one from my daughter's cell phone that got run over by a few hundred cars.
I salvaged its tiny electret microphone and I looked at the "pager motor" for a long time wondering what it was. I removed it and connected a 1.5V battery to it and it vibrated all over the place!
Pager motors are tiny, about the same size as in the drawing. I don't know how to remove the small weight on the shaft.

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