When I was on a field trip with my class, I saw a few boys using a device that you plug into the headphone port on your ipod and it allows two sets of headphones to listen to the music from one ipod. I wanted to make my own and prove that it costs less to make your own than to buy a commercial product. I know that many people listen to music, but not all people own their own ipod, so I decided to create a small portable device that could allow two people to listen to the same music from the same ipod just like the device I saw on the fieldtrip. This is super easy to make and it costs about $5 or if you already have some of the materials, it would cost less. I would highly recommend building this with kids and students because it is simple to make and it requires few easy to find materials. I hope you enjoy building your double headphone jack!
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