So I got everything in and the arduino updates extremely fast. I am very surprised. I plugged in all 4 strands and noticed the yellowish color because of the voltage drop. Even with 2 strands I started to notice it in the middle even though I connected both ends of the strands back to the power supply. I guess it is not too easy to work with 20m of LEDs like this. I have a second power supply coming in so I can hopefully just work with 2 strands at a time. Any other suggestions for helping with voltage drop or to prevent the yellowish color near the middle of the two strips?
Just for a fun project I hooked up my arduino to my raspberry pi and had it issue commands via serial, now I have my entire room lit up and voice controlled with various animations,. Granted it will look a lot better when the second PSU comes in and that will hopefully help with the voltage drop.
Also is there any easy way for direct control from the raspberry pi? I noticed it doesn't look like it can keep up with the correct speed of the chips to update the lights, but i figured it would be quicker and easier to do that then have to update code and add more serial commands which seem to slow things down? I noticed the fadecandy device which works with the raspberry pi but it seems to be geared toward multiple smaller strips. Is there a similar device that I could use directly from the raspberry pi to control the amount of leds that I will be using? (total of 600)