WS2812B Without SPI

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Gustav
Thanks for the responses, I don't seem to get it working, I know the ws2812b is rated for 5v but it should work with 3.3 as signal and 5v for vcc. I wired it to pin D30 and tested
```
require('neopixel').write(D30, [255,0,0])
```
.

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Robin in reply to @Gustav

Sun 2019.07.07

For level shifting the reason why and solutions, See discussions at:

PinMode af_opendrain

http://forum.espruino.com/comments/14589186/

Use of diode or pullup for level shifting

http://forum.espruino.com/comments/14506218/

I prefer the use of a $0.01 transistor while using these high current demand Neopixels. Get it wrong, and the transistor fuse should go first, hopefully protecting the $35 Espruino microcontroller.

http://forum.espruino.com/comments/14506524/

I highlighted the references above, but read the entire blog post.

Also check out the datasheet to see and understand why:

REFERENCE table of RGB Led datasheets Neopixel

Second table on page 3
Look for 'Input Voltage Level' V ih - the minimum for a logic HI for input into the Neopixel.
I'm afraid 3.3V ain't gonna cut it . . . .

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