Light and Interactivity week 2 : Artificial Candle

This week assignment is to imitate candle light using Neopixel LED which I started by taking some example codes from the color-converter library to see how things work — and the first thing that I need to understand is how HSI color work.

Here are some info and random internet captures that I got to help me understand how HSI color works.

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From this information, seems like hue is the most meaningful value when saturation approaches 1 and less meaningful when saturation approaches 0 or when intensity approaches 0 or 1. And Intensity also somehow seems to limit the saturation value — which I think maybe that’s why it’s easier to play with the hue value in the sample codes more than saturation or intensity.

So when I started to make my own candle. First I try to set the hue value to around 60 to see is the color will be the yellowish that I like then adjust it a little bit with saturation and intensity.

turned out it’s yellowing pretty well :D

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After that I try to imitated the candle by putting a little bit of blue in the center pixel and keep the outer ring pixels at the same hue values — which I ( personally ) think that it makes the overall lighting effect looks a little bit more “นวล” ( i don’t know english word for this softer, i guess? )

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I also experiment a little bit with some other values after that, and here’s some conclusions I got :

  • the increment of the saturation and intensity didn’t effect the hue of the yellow color much compared to blue

  • the increment of intensity is also able to adjust the flickering pretty quick — strong wind

  • adjust the delay value higher or put random value in it — using noise?

  • test the lighting effect with enclosure while programmimg

Here is the video :

 

Light Observation : 02

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Whitney Museum, June 2017

this photos were taken on the deck of the Whitney American Museum facing north - just a little bit before sunset in summer 2017

During that time, the museum was exhibited 4 red cube sculptures by Larry Bell for the 2017 Biennial. The cubes created and casted some interesting (and very cute! :D)layers of colored shadows on to the floor. The sculpture’s transparency and reflective material itself also able to capture the color of the sunset and overall environment creates a very spacial moment for the pieces.

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