50Pcs Geekcreit® DC 5V 3MM x 10MM WS2812B SMD LED Board Built-in IC-WS2812
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Very nice LEDs to make your own RGB strip/ring or matrix. These leds look and work like the Neopixels from Adafruit, only the microscope shows a difference. In a comparison with Neopixels from Adafruit I was not able to tell which ones are brighter. With a few leds I noticed bubbles or other imperfections in the transparent plastic but this does not result in a visible difference with the other leds. Very good value for price.
WS2812 Neopixel clone in every sense, these are very easy to use and compatible with most drivers(Poluled,Adafruit_Neopixel,FastLED, FastSPI libraries all work on Arduino with these). Incredible effects......5*8 Array Behind the Sun in image posted on this site.... Nano running the code 16 in a string in the infinity hole (also posted here)....... ESP8266 running the code......