here it is, with external casing holding the arduino board, a 9V cell and the shift registers. version 1.0 will be self-contained using an arduino mini and a smaller and stronger power cell. at the moment the system is running for approximately 1 1/2 hours on a fully charged battery.
Here it is, still some unreliable contacts, but i will fix that tomorrow…
32 Ultrabright LEDs in a beautiful casing hand-crafted out of brushed aluminium by tim horntrich
a long exposure shot taken… a radioactive symbol is clearly visible.
placed next to a highway and showing crosses, the POV device reminds drivers that speeding kills, the faster they drive the better they can see the crosses
the 32*32 LED code and hardware finally works… after finding out that a 2dimensional array of booleans uses all the RAM of the Atmel on my Arduino board, i was told that i could store the image data in a 32-field-Array of longs. it was a little bit tricky to figure out, but i wrote an processing sketch that outputs a series of longs to the console generated from a .gif image which can then be copied into the arduino program.
in order to draw attention to the object, it has to reveal itself shortly. this will cause an irritating moment and make people want to explore the nature of the POV display. motion of the eye is necessary for that.
tests with the prototype have shown that even the saccades of the human eye are able to enable the effect. when looking around in a room where such a display is placed, in the corner of ones vision the motive displayed suddenly appears. i hope that the larger version with 32 LEDs will be visible even better when letting a glimpse glide over it by chance.
another possibility would be to set the display up in places where people are bound to move their eyes. even better when always in one direction.
in this case it is interesting to find a content that matches the surroundings again… for example on the side of a racetrack the letters “CO²” could be shown.
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