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.

Screen Shot 2562-04-14 at 22.48.34.png

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:

Screen Shot 2562-04-14 at 22.01.53.png

Max patch:

Screen Shot 2562-04-14 at 22.04.41.png

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)

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