NulSom Rainbow Matrix for ARM Cortex MCUs / Arduino / uC with Logic Level Converter - 8x8 WS2812B (WS2811 Compatible) Addressable RGB LED Upgraded NS-LED-03T with Logic Level Converter, 8x8 matrix type, ultra bright and colorful WS2812B digital RGB LED Easy and fun Arduino project, Chainable design, Zigzag layout 256 brightness display and full 24-bit (16,777,216) color display Compatible with the WS2812 Arduino library NS-LED-03T: Ok when a signal level is 3.3V from ARM Cortex MCUs (Naze32/Teensy), NS-LED-03: 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