26 Jul '13, 5pm

New post: Geometry class just got augmented

New post: Geometry class just got augmented

Hmm, I am somewhat sceptical that this is an actual video of the device working and not only a proof-of-concept, pre-recorded (“faked” if you want) demo. There isn’t any obvious sensor on the ruler that could actually capture the pen strokes, furthermore, some of the things, such as the bouncing ball and the angles require image understanding code to be running on the device – complex stuff, not something a tiny microcontroller could do. E.g. how would the ruler know whether to draw a ball or display the measurements? Or how would it recognize the direction of the arrow? There seems to be a lot of stuff missing in the video. I wouldn’t be at all surprised if there was a camera above the desk (and out of view) and the device was only used to display the results computed by an off-board computer. That cable is obviously plugged in somewhere.

Full article: http://hackaday.com/2013/07/26/geometry-class-just-got-au...

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