Mobile Phone Amplifier

Mobile Phone Amplifier -Open Source Course
Materials:
*2 paper rolls
*2 disposable cups
Scissors
Wrapping Paper
Scotch tape
Skewers
Downloads
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Wrap the paper rolls in wrapping paper
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Stick with scotch tape, do this twice

Connect the two rollers using scotch tape
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Take scissors disposable cups and skewers
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Make a hole in the disposable cup with the skewer
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Start cutting the hole in the shape shown in the picture
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Connect everything as shown in the picture and cut a strip according to the size of your mobile phone. If the wrapping paper is torn, stick it with scotch paper

Here the amplifier, it significantly causes the sound to be louder