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I love the breadth of skill that went into this project. It shows good knowledge of software, hardware, reverse engineering, and its even tied together in a really neat package.

Not to mention 3D modeling. She 3D printed the part with the sonar attached on top of the battery.

Seriously. I'm thinking of finally going and getting a 3D printer based on her blog. Lots of cool hacks and prints in there.

You don't need to buy one, there are lots of mail order printing services, and local services in big cities.

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