Baltimore Dorkbot » mapping http://bmoredorkbot.org People doing strange things with electricity, hon. Mon, 26 Jul 2010 12:42:04 +0000 http://wordpress.org/?v=2.8.6 en hourly 1 June Meeting Recap http://bmoredorkbot.org/2009/06/june-meeting-recap/ http://bmoredorkbot.org/2009/06/june-meeting-recap/#comments Wed, 24 Jun 2009 20:15:01 +0000 Bonnie http://bmoredorkbot.org/?p=148 iphone

Last week at the Patterson, Zack Waugh (Programmer and Developer at Fastspot, LLC and the developer of QuickPic) gave us an introduction to developing for the iPhone. Zach showed us the iPhone SDK and gave us some helpful tips on how to get started with Objective C/Cocoa. He then demonstrated a simple “Hello World” app and played around with the interface builder. Download his Keynote Presentation and Sample Files for more information!

In addition, Les Bradley brought in a dismantled Poloroid camera. He plans on using the sonar from the camera along with an arduino and his Wii Chuck from last month to create a mapping device. Stay tuned as his project develops!

]]> http://bmoredorkbot.org/2009/06/june-meeting-recap/feed/ 0 Maps of distances from range finders? http://bmoredorkbot.org/2009/06/maps-of-distances-from-range-finders/ http://bmoredorkbot.org/2009/06/maps-of-distances-from-range-finders/#comments Wed, 03 Jun 2009 21:38:28 +0000 LesBradley http://bmoredorkbot.org/?p=107 I’ve been doing homework with lots of search strategies, but still looking for some answers.
I would like a range finder to draw a two-dimensional map that represents the distances of everything within its field of view. It would look as if you were using a video/still camera, shooting what’s in front of, say, my robot, but the picture would not be displaying the varying brightness of light reflected from objects. Rather, there would be, perhaps, a gray-scale image based on distances observed by a range finder.
This would probably require a scanning of the scene (as a video camera would do) rather than the single horizontal line that (I believe) a typical range finder would yield.
Anybody work with such concepts or have suggestions? I’ve been searching literature on surveying, photogrammetry (!), autonomous vehicle navigation, and the like. I’m just hoping to find a relatively simple solution; somebody must have done this before.
Les Bradley

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