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I was driving WS2812 RGB LEDs from an ESP8266. The WS2812s need 5v logic to work properly. They sometimes work with 3v3, but you often get bad flickering, which is what was happening in my case. I ordered this logic converter, but I wasnt sure if it would be able to switch fast enough for the data line, but it does! Now my lights work perfectly and there is no flickering. This is a quick, easy and cheap fix. Connect GND, 5V to HV, 3.3V to LV and then the data pin goes to L1 and the LED data input goes to H1. Switch on and you're done!
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Works a treat. Ideal for connecting the Arduino Due to other devices via the I2C interface.
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Appears OK but not used in anger yet
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