I am making a 16x16 array with a WS2811 strip- I am using an

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I am making a 16x16 array with a WS2811 strip- I am using an Arduino Uno.

I have read the FastLED user and can control the strip doing basic patterns and all but I can’t find anything about taking an image file and having FastLED use to data to send it to the array

Where can I read about that?
Thanks

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Afaik this lib does not provide any functions for sending an image to LED strips.
I suggest you have a look at the bitmap (bmp) specifications. Bitmaps have a very simple structure and can be easily read out pixel by pixel. To prepare an image for processing, eg. 8bit colors, size, etc, you want to have a look at “ImageMagick”.
Have fun!

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@Eric_Lachaine I read about the NeoMatrix by Adafruit awhile back and I think you might find some help here: http://learn.adafruit.com/adafruit-neopixel-uberguide/neomatrix-library