ws2811 single channel logic level converter ?

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nlecaude

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Hello,

Most of the projects I'm doing with ws2811 involves few LEDs, I therefore tend to use the neopixel library more often than OctoWS2811 since I use a single pin. Anyone knows of a single channel logic level shifter that could work ? Using a 4 or 8 channel version seems overkill for my needs.

Thanks !

Nat
 
I'd recommend using a "74HCT" chip. They're cheap and they work really well. A 74HCT125 would be a good choice. Just leave the other buffers unused.

Do not use the I2C circuit (2 resistors and 1 N-channel mosfet). It's not fast enough, and the rise vs fall speeds differ, which is terrible for the WS2811 protocol where the pulse widths matter.
 
When you are not using the other channels, connect their inputs to GND or supply.
 
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