Nicholas Rehm may be a full-time aerospace engineer, but his success in constructing a DIY self-flying drone that avoids obstacles without standard GPS tech aboard still merits a standing-O. He also gets a deep bow for describing the serious wonkitude involved in a thoroughly entertaining way.

Rehm is no neophyte to homemade drone projects – with or without GPS assistance. Given the education and experience required for his day job, no doubt, his DIY endeavors tend to be a great deal more complex than the typical amateur craft that get (as woebegone Soviet citizens used to put it) “snotted together.” His YouTube page contains over a dozen instructional videos of how he devised and assembled his way-complex UAVs, usually relying on wry understatement or irony to cut the thickness of complex processes he’s detailing. 

Quite clearly, Rehm not only brings his work home with him, but indeed creates additional labors of love to infect others with his passion…

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Source: dronedj.com