Dear Gurus, I have a lighting-project where there is 16 windows that are 80cmX80cm.

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Dear Gurus,

I have a lighting-project where there is 16 windows that are 80cmX80cm. 4 windows in each direction. Im going to put frosted foil on the inside of the glass, and put RGB-Strips around the rim, then close them up from behind with white composite-boards.

There will be 188 LEDs pr window x 16 = 3008

I have a Teensy 3.2 and a OctoWS2811 to get it playing. I will have 2 windows (376 LEDS) per channel on the OctoWS2811 - And a Raspberry Pi with net connection so I can reprogram it if i want.

I will fit a waterproof ultrasound sensor under the pir to measure waves and tides, and use those numbers to make some nice light-effects.

So far so good

But I want to treat the windows as a widescreen 768x48px, just forget that there is just pixels around, and nothing in the middle, I think the light-effect will be quite sufficient.

I started to make tables, but soon found out it will be quite large …

And maybe some of you have a better idea on how to solve it?

Glad I found this group, And Ive been reading thru all of the discussions the last days.

Rasmus

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This may help https://plus.google.com/115124694226931502095/posts/eS1Wv3Vycx9

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Its sadly just about circular shapes

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But you could apply the math to fit the shape you envision. The example is a circle based on a square matrix. So it shouldn’t be too much of a stretch to just convert it to the the square (or rectangular in your case) mapping.

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You will have to play with mapping techniques. You can make the empty pixels have no mapped address and still render a full frame of any size. Have a look my tutorial http://www.elec-tron.org/?page_id=1351

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Problem is that my map will be over 50.000 ‘addresses’.
So I think I must go for the math.