He's created a transistor radio, homemade his own batteries to power his community's FM youth radio station and most recently, built a larger studio generator—all by putting pieces of materials together he's found in the trash. At 16 years old, Kelvin Doe aka DJ Focus has been called a 'prodigy', a 'genius' and for those living in the Sierra Leone village of Dwarzack –he's also a great inventor.

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