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In each volume of MAKE we have “major projects” these project pages are meaty step-by-step articles with start-to-finish photos, precise instructions and how-to learning that can range from making a VCR cat feeder to ariel kite photography. In MAKE volume 12 the projects are:

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Super Tritone Shop Whistle by William Gurstelle. This jazzy, compressed-air-powered whistle sounds a mighty blast. Page 88

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Solar Xylophone by Rory Nugent. Solarengine circuits trigger hammers to strike pentatonic chimes. Page 98

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Kinetic Remote Control by Dhananjay V. Gadre. Shake batteries out of the picture with this muscle-powered remote. Page 108

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20-Watt Solar Panel by Parker Jardine. With a few solar-cells and a plastic case, you can utilize the sun’s energy to power anything from a light bulb to your entire house. Part 2 of this article will appear in MAKE, Volume 14. Page 158

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