Harmony of Opposition


<Harmony of Opposition>

Yunjeong Jang







Exhibition Version









‘Harmony of Opposition’ is a lighting installation art project on canvas and also interactive artwork controlled by leap motion and Arduino. I initially intended to display few different things but combining together. People can notice two kinds of oppositions one is the lights and another is a concept of traditional and new elements. Having said that, when audiences face to this work, those oppositions seem to be balanced. In detail of the oppositions, the lighting oppositions are composed of two different white colours which are warm white and cool white. Each white colours are fixed on the opposite sides of the canvas. However, the two lightings do not have their own sectors. That means in the middle of the canvas, I put one black barrier and the barrier is rotating. When the barrier is moving, positions affected by the two colours are changed and a variable intermediate location is mixed up with both colours. About the concept of traditional aspect and new aspect, I designed two factors to represent. First of all, the materials I used to create this project consist of the canvas and the digital elements. No one can deny that the canvas has been a symbol of classic art for ages so it refers to the classical and old factor in my work. On the other hand, except the canvas, the materials such as motor, Arduino, coding, lighting, sensor and etc are reflected as the icon of the new beside to the canvas. Apparently the age of their appearance has a huge gap, for instance, a form of the canvas I adapt was invented in the 14th century, besides, other materials have emerged at least after 18th century to the present era. Secondly, the thing I assigned a meaning of new and old is the sounds generated by leap motion and computer. There are three sounds I contained, a guitar sound signifies classic and the two electronic synthesiser EDM chords mean to the new.
As a perspective of interaction via leap motion, audiences can easily control both sounds and the rotation of the black bar. The installation artwork is coded to be interactive reaction according to the position and gesture of the leap motion. People may produce the different sounds following the rules, for example, when the visitors put their hands close to the leap motion, they can hear only electronic beats and sounds. But when people move their hand distant from the leap motion, only the guitar sound will be played. And for harmonised sound, the people need to place their hands to the certain position around 15cm from the leap motion then grab and lose their fists. About the spinning bar control, when the hand is closely placed above the leap motion, the speed is relatively low and the high position, the rotating speed will be going up.

To create this project, I was strongly inspired by the symbol of yin and yang. Yin and Yang can be thought of as complementary (rather than opposing) forces that interact to form a dynamic system in which the whole is greater than the assembled parts. The yin, the dark swirl, is associated with shadows, femininity, and the trough of a wave. The yang, the light swirl, represents brightness, passion and growth. Those meanings sound totally opposite aspect, but subtly look as if balanced. I exposed the yin and the yang as the colour warm and cool white each, besides, the wave shape in the middle would be converted to the spinning black bar and this fence stands for harmony and supplement of the opposition. In addition, the idea of the contrary about the new and the classic is from my brain when I visited some galleries. Nowadays, as a development of technology, different genres of art have emerged and popular. Having said that classical fine art is still loved by the majority of people. Thus, I received the various shapes of artworks at the same time in one gallery and I felt the ambience of the whole gallery seems quite balanced.


<photo of yin and yang>



My artwork includes fairly a significant impression. Through this project, I emphasise the harmonising to different things and I dream the audiences may feel less anxious what they are concerning about the otherness. In my case, except few years, I used to stay in my country whole life but I decided to live in another country and I tried to be compatible with foreign among the different atmosphere. As if the contrasts and harmony of my project, I want to make people convinced they have a strong possibility to solve their inner problem about the opposition they have and that is the main purpose of why I created this project. Thus, I strongly desire to show my work to people as much as I can. I already have planned two exhibitions to display, one is upcoming pop-up computational arts exhibition in Professor Stuart Hall Basement on 10th of May and it would be great opportunity to present my work approximately 200 people. Another planned exhibition I am going to participate is in this summer around late June or early July. I and my other classmates will take part in this exhibition and organise everything ourselves. This exhibition has been on the progress so now we are still contacting to some local galleries. If we finish our exhibition successfully, it will occur several benefits to me including experience and give sider publicity to my artworks. I hope as much as people will have an experience of the keyword ‘harmony’ through my art piece.





The techniques I selected to create the object is produced by several programs such as processing, Arduino, Wekinator and Logic Pro X, and various materials. About the software, to control a motor with leap motion, I studied serial port to connect Arduino and processing.

I took the initial Arduino and processing code from the ‘make it mech’ and modified a lot. I changed the spinning direction of the motor, speed and the position of leap motion visualisation.

To generate sounds, at the first step, I created different instruments sounds using Logic Pro X. This software provides diverse instruments which contain from classical piano to electronic synthesiser and also supply tones of loops. I planned to make classical instrument sounds and electronic sounds using computer synthesiser, thus, I chose a classical guitar sound and dark chords and Chicago chords in the electronic synthesiser category. Then record myself to create ‘wav’ files. Next step was applying the sounds I made to processing output code. At this step, I used the example provided by Wekinator website called ‘Processing_Drum_3ContinuousOutputs’. This example is well organised and high accessibility to success my final goal. I put my own sounds instead of example drum beats and changed the appearance of the visual.

For processing code for leap motion, I also adapt the leap motion example as an input from Wekinator named ‘LeapMotion_Fingertips_15Inputs’. Connecting between sound output and leap motion input is through the Wekinator. I used 3 continuous outputs and 15 inputs then put three gestures to generate the certain type of sounds. Controlling three outputs could create lots of different effects than I thought.

About the installation and physical part, it contains the variety of elements. I installed dimmer able SMD 2835 LED strip 12v lights both warm and cold white colours. That convenience is the best factor of the reason why I chose, especially wire connecting, sticky surface to attach and adjustable brightness. I trimmed those LEDs such as soldering, wiring and re-sizing. And to attach those LEDs, I attached two hardboard sheets to the canvas for firming. The size of the canvas is 300mm*300mm*15mm and pierced a 15mm diameter hole in the middle of canvas for the motor. The black bar is 5t(5mm) foamex(Foamex is a PVC foam sheet that is fabrication friendly, it is also known as Foam PVC, Foamalite, Forex and Palite), 50mm height and 290mm width and fixed to the mini servo motor. The motor is one of important equipment in my artwork, I selected ‘Hitec HS-422 Servo Motor’ which is high durability, reliability and cost effective even I put a quite heavy object on the motor, it would work in proper.





[1] To control motor using leap motion

How to control servo motor using Leapmotion and Arduino

[2] To generate sounds using leap motion
Wekinator example


Relation to existing work

[1] Robotic hand using Arduino and Leap motion sensor

[2] Controlling audio effects