NulSom Rainbow Biscuit for ARM Cortex MCUs / Arduino / uC with Logic Level Converter - 3x3 Matrix WS2812B (WS2811, NeoPixel Compatible) Addressable RGB LED Upgraded NS-LED-06T with Logic Level Converter, 3x3 matrix type, ultra bright and colorful WS2812B digital RGB LED Easy and fun Drone/Quadcopter/Arduino project, Chainable design, Zigzag layout 256 brightness display and full 24-bit (16,777,216) color display Compatible with the Neopixel Arduino library 3.5V ~ 5.5V works, NS-LED-06T: Ok when a signal level is 3.3V from ARM Cortex MCUs (Naze32/Teensy), NS-LED-06: Need to use a high speed level converter (74AHCT245, etc.) or 3.7~4.2V power supply instead of 5V when a signal level is 3.3V from Naze32/Teensy