Firstly, I am really interested in learning how to create different interactions within the environment and its users/occupants. I wanted to work around the concept of customisable lighting, even working around intelligent lighting idea. I need to say that changing color doesn’t need to be just for aesthetic purposes because colours can be an important factor on changing people’s mood. Therefore, I was looking for a better lighting solution that allow users to create their own environment in relation with its own mood with a simple interaction ( in this case, using an Ipad’s interface).
My main goal was to create a concept that was able to offer a similar environment/ experience that most of the expensive ambient lighting systems do with much more simple / cheap solution.
I have built a DIY customizable pixel panel with the lowest budget possible. I used Arduino for controlling each pixel of the LED's strips and processing for creating the user's interface (using an Ipad in order to make the interaction even easier.)
I wanted to create a concept that was affordable and accessible for almost everyone. I tried to choose every component carefully, as you will see in the list below. Despite it requires quite a long process of production, it's really easy to use and allows several changes. 
List of materials : TIGER photo frame, WS2812B DC 12V Individually Addressable Color LED Digital Strip 300LEDs AC 100-240V To DC 12V 5A 60W power supply + adapter for LED Light strips, Arduino UNO, solder, soldering iron, frosted glass finish spray, High-Temp Glue Gun, Glue sticks, chipboard.
Note: The LED's strips used had a subtile flicker since the beginning. This flickering kept increasing during the use. It's annoying because the code is working well. This means that the system would have a perfect performance using different LED's strips.
Experimental version using OpenFrameworks to create a smooth and customised animation that  is sent via serial to de LED frame.
At this point, the Psychological properties of Colour are a key stone of this project. I decided to use just a few colours, but the choice is meaningful ( see more information at the end of the page).
( descriptions from Colour Affects) 
Positive: Hygiene, sterility, clarity, purity, cleanness, simplicity, sophistication, efficiency. 
Negative: Sterility, coldness, barriers, unfriendliness, elitism.
Just as black is total absorption, so white is total reflection. In effect, it reflects the full force of the spectrum into our eyes. Thus it also creates barriers, but differently from black, and it is often a strain to look at. It communicates, "Touch me not!" White is purity and, like black, uncompromising; it is clean, hygienic, and sterile. The concept of sterility can also be negative. Visually, white gives a heightened perception of space. The negative effect of white on warm colours is to make them look and feel garish.
RED. Physical
Positive: Physical courage, strength, warmth, energy, basic survival, 'fight or flight', stimulation, masculinity, excitement. 
Negative: Defiance, aggression, visual impact, strain.
Being the longest wavelength, red is a powerful colour. Although not technically the most visible, it has the property of appearing to be nearer than it is and therefore it grabs our attention first. Hence its effectiveness in traffic lights the world over. Its effect is physical; it stimulates us and raises the pulse rate, giving the impression that time is passing faster than it is. It relates to the masculine principle and can activate the "fight or flight" instinct. Red is strong, and very basic. Pure red is the simplest colour, with no subtlety. It is stimulating and lively, very friendly. At the same time, it can be perceived as demanding and aggressive.
YELLOW. Emotional
Positive: Optimism, confidence, self-esteem, extraversion, emotional strength, friendliness, creativity. 
Negative: Irrationality, fear, emotional fragility, depression, anxiety, suicide.
The yellow wavelength is relatively long and essentially stimulating. In this case the stimulus is emotional, therefore yellow is the strongest colour, psychologically. The right yellow will lift our spirits and our self-esteem; it is the colour of confidence and optimism. Too much of it, or the wrong tone in relation to the other tones in a colour scheme, can cause self-esteem to plummet, giving rise to fear and anxiety. Our "yellow streak" can surface.
GREEN. Balance
Positive: Harmony, balance, refreshment, universal love, rest, restoration, reassurance, environmental awareness, equilibrium, peace. 
Negative: Boredom, stagnation, blandness, enervation.
Green strikes the eye in such a way as to require no adjustment whatever and is, therefore, restful. Being in the centre of the spectrum, it is the colour of balance - a more important concept than many people realise. When the world about us contains plenty of green, this indicates the presence of water, and little danger of famine, so we are reassured by green, on a primitive level. Negatively, it can indicate stagnation and, incorrectly used, will be perceived as being too bland.
BLUE. Intellectual.
Positive: Intelligence, communication, trust, efficiency, serenity, duty, logic, coolness, reflection, calm.
Negative: Coldness, aloofness, lack of emotion, unfriendliness.
Blue is the colour of the mind and is essentially soothing; it affects us mentally, rather than the physical reaction we have to red. Strong blues will stimulate clear thought and lighter, soft blues will calm the mind and aid concentration. Consequently it is serene and mentally calming. It is the colour of clear communication. Blue objects do not appear to be as close to us as red ones. Time and again in research, blue is the world's favourite colour. However, it can be perceived as cold, unemotional and unfriendly.

Positive: Physical tranquillity, nurture, warmth, femininity, love, sexuality, survival of the species. 
Negative: Inhibition, emotional claustrophobia, emasculation, physical weakness.
Being a tint of red, pink also affects us physically, but it soothes, rather than stimulates. (Interestingly, red is the only colour that has an entirely separate name for its tints. Tints of blue, green, yellow, etc. are simply called light blue, light green, etc.) Pink is a powerful colour, psychologically. It represents the feminine principle, and survival of the species; it is nurturing and physically soothing. Too much pink is physically draining and can be somewhat emasculating.
And last but not least, the combination of all the colours above.
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