pxt-calliope/docs/projects/hack-your-headphones.md

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# hack your headphones
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### @description A beginner maker activity, building a piano from bananas.
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### ~avatar
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Build your own music player @boardname@ from headphones.
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### ~
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![](/static/mb/lessons/hack-your-headphones-0.png)
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## Duration: ~15 minutes.
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## Materials
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* @boardname@, battery holder and 2 AAA batteries
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* Headphones
* Crocodile clips
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## Activities
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* [Connect your headphone](/projects/hack-your-headphones/make)
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* [Play sounds!]()
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# ~hint
**No crocodile clips!?!?!** Use wires or Aluminium foil! [Read more...](/device/foil-circuits)
# ~
### ~button /projects/hack-your-headphones/make
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Let's get started!
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### ~