You need a arduino uno or nano. And 5v external powersourse to use it. Or a strong lipo. Look arrount on http://INSTRUCTABLES.COm
http://INSTRUCTABLES.CO
Becous the uno has onlly an output of 500mA
But testing it with the code. Wil work fine on the usb uno voltage
I just started to use the same WS2812B adresseble leds a few weeks,so i only know a bit. Use this and other sources like the Adafruit site, tons of video and info.o yeah PLEASE SUBSCRIBE and LIKE my YouTube. If you want. Got some amazing builds also to folow http://up.WannaDuino.
so i have to soder all this together or does so come together.