Lighting Moment #11

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#lightandinteractivity #itp . Charoen Krung, Bangkok Sunday, April 15, 16.37 . This is a photo of CAT Telecom building taken from Icon Siam (the building on the opposite side of the river) facing east. The CAT building is curved and therefore acts as a convex surface. Here the reflections are more stretched on the right side in relative to the left. Because the building’s surface/windows are in a grid form, the reflections appear pixelated and almost animated. The lower part of the reflections on the building (the river) appears as if it is an extension of the river itself. This is because the reflective surface is so close to the water. When looking at the water itself, the left part (of the photo) appears darker because of the shadow of the building on the opposite side. . This photo is taken by @chaooocha – inspired by the class’s lighting moments assignment.

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Lighting Moment #10

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#lightandinteractivity #itp . First photo: North Adams Sunday, April 28, 18.26 . This photo was taken in a moving car with windows rolled down facing north east on the way back to New York City. It was a rainy day earlier in the day (light rain) and was misty thereafter. At the time the photo was taken, the sun was trying its hardest to come through and as a result created double rainbows. The closer rainbow seemed bigger and more saturated and the further narrow and more fade. — I wonder if it is possible to recreate a rainbow in a smaller setting, how its qualities can be manipulated or controlled and how to create a double rainbow. . Second and third photos (extras): Washington Square Park Tuesday, May 8, 17.06 . These photos were taken on the day before light and interactivity’s last class – a sunny day. The first photo is a rainbow created by the park’s main fountain. The second photo is of organic shadows on the Washington Square Park Arch.

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Final Project Update

This week I continued to experiment with different materials, composition of light and light sources.

Materials:

  • black and white acrylic – I decided to use matte white acrylic for the main surface because it presents shadow best and use black opaque acrylic around the side to absorb the leaked shadows
  • black elastic band (Canal Rubber) – after a few experiments with ribbons, wires, strings and various shapes and sizes of elastic bands, I chose black square elastic band for the piece because it provided the most crisp shadows

Composition of light:

  • I decided to use 4 lights in 4 corners because it provided the most interesting shadow compositions
  • I decided to only have the strings in one direction (horizontal) to highlight the differences in shadows and to keep the aesthetic neat and clean

Light source:

  • After trying the chip on board light and the high power LED light, I decided to go with the high power LED because it was more direct thus provided better shadows and lighting for the piece

Prototyping progress:

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(testing the black frame to eliminate leaking shadows)

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(testing the direction of light)

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(photos of the piece lit from different corners using an iphone flashlight)

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(photos of the piece lit from different corners using an iphone flashlight)

DMX CONTROL

Assignment: Make a controller for a DMX-based lighting plot.

For the assignment I tried using both node.js and Arduino, and found the Arduino (Arduino MRK1010 board and Arduino MKR485 shield) to be much easier in terms of programming.

To start off I connected the DMX cable to the shield.

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I then set the channel on the DMX and tested the light using the ArduinoDMX library’s example and tested a few effects to see the light’s speed – I was surprised to see that it was very fast to turn on/off, much like a strobe effect.

 

Having worked a lot with audio and visuals on Max/MSP, I wanted to try using the program to control the light. The three main effects I wanted to explore where panning, rhythm and synchronisation/desynchronisation nature of audio and visual.

I started off by trying to send multiple data from Max to Arduino through serial communication (panning experiment).

Sending data from Max: convert all integers to ascii (using atoi object)

Receiving data from Arduino: convert characters to strings (using subString) to integers (using toInt) — StringSubstring and StringToInt examples on Arduino.

After I was able to run the serial communication smoothly I started building the sound files and the controls. These were the results.

Control interface:

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Max patch:

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Max/MSP patch and Arduino code: https://github.com/hellonun/dmx-control-maxmsp-arduino

I am very happy with both the control functions and the light quality. I hope to experiment with other sounds and visual effects in the future (as well as making the control more user-friendly)

Lighting Moment #9

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#lightandinteractivity #itp . Dia Beacon Sunday, January 13, 14.16 This is a photo of Fred Sandback’s art piece, taken facing east on a very sunny day. Sandback explores the sense of space using strings and light. At this particular moment the photo is taken, the sun is shining through different window glasses creating reflections of different textures. These reflections move as the sun moves through the day creating different spaces and an almost playful experience for the audience to observe and walk around. The white strings help us see the contrast between them and the white wall behind. . A very minimal installation can be very powerful when placed at the right angle relative to light. And a space can be defined using only strings.

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Lighting Moment #8