If the flashlight is to strengthen the tin bracket with a motor from a child’s toy, the axis of which is planted miniature celluloid propeller, and connect the motor to the battery of a flashlight, get a portable fan, which could become a mechanical fan and refresh face in heat.
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Informing about the occurrence of an event, people often use sound signals. Usually they have the character of a continuous sound "one note" annoying "beep-beep" or howling siren with a...