Level Shifter - awawa-dev/HyperHDR GitHub Wiki

The 3.3V level shifter is a mandatory part of the solution where 3.3V GPIO device like Raspberry Pi or ESP8266/ESP32 is communicating with the 5V LED strip.

The diagram of the board for WS2812b/SK6812 including ESP32/ESP8266 and the SN74AHCT125N 74AHCT125 level shifter.
Thanks @wilhelmthorpe