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DIY Linear actuator Solar Tracker FRESNEL LENS STAND DOOMSDAY PREPEPRS BUILD

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DIY Linear Actuator from a drill hack To track the sun with a Fresnel Lens. This is a detailed version PART 1. There will be a condensed version of the basics. THIS MAKES A HELIOSTAT.

DRILL HACK:
http://www.youtube.com/watch?v=e0OPiMKVUh8

CONCENTRATED SECONDARY LENS:
http://www.youtube.com/watch?v=xeUI8vPkUqI
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