user53434: I am doing my thesis project which is a kinetic light/sound sculpture. My first step is to learn how to work with RGB LED lights and how to choose them and what other kinds of equipment I need. 
I started to learn Arduino uno and learned how to light an LED, now I need to expand it much bigger. 
I want to be able to control each LEDs. 
I want 30 meters LED light divided to 7 channels, in which each channel have a unique function that will trigger 7 channels of sound.  
I hope I could use your help and thanks in advance for your time :) 

user52137: I suggest you to use RGB Led Driver like: WS2812. 
You can build led strip as long as you want.
There are a lot of example/tutorial using Arduino and Strip Led composed by WS2812 Led Driver (For example, here there is a tutorial).
NB: You pay attention that using 30 meters strip led, you need an external power supply and you can't use 5V pin of Arduino, because Arduino doesn't supply sufficient power for supply a strip led too long.

53434: <p>I am doing my thesis project which is a kinetic light/sound sculpture. My first step is to learn how to work with RGB LED lights and how to choose them and what other kinds of equipment I need. </p>

<p>I started to learn Arduino uno and learned how to light an LED, now I need to expand it much bigger. 
I want to be able to control each LEDs. </p>

<p>I want 30 meters LED light divided to 7 channels, in which each channel have a unique function that will trigger 7 channels of sound.  </p>

<p>I hope I could use your help and thanks in advance for your time :) </p>
 52137: <p>I suggest you to use RGB Led Driver like: <a href="https://cdn-shop.adafruit.com/datasheets/WS2812.pdf" rel="nofollow noreferrer">WS2812</a>. 
You can build led strip as long as you want.</p>

<p>There are a lot of example/tutorial using Arduino and Strip Led composed by <strong>WS2812</strong> Led Driver (For example, <a href="https://core-electronics.com.au/tutorials/ws2812-addressable-leds-arduino-quickstart-guide.html" rel="nofollow noreferrer">here</a> there is a tutorial).</p>

<p>NB: You pay attention that using 30 meters strip led, you need an external power supply and you can't use 5V pin of Arduino, because Arduino doesn't supply sufficient power for supply a strip led too long.</p>
