simple example NEO_GRB won't work

[YufeiJ1ao]

• Arduino board: arduino leonardo

• Arduino IDE version (found in Arduino -> About Arduino menu): 1.8.19 (Windows store 1.8.57.0)

• List the steps to reproduce the problem below

When running Adafruit Neopixel simple example, the LED light stripe was flashing
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

When change NEO_GRB to NEO_GRBW the colour turns normal
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRBW + NEO_KHZ800);

Is it possible to start a pull request to make a change?

[hlcm0]

This is probably because your led strip type is RGBW, which need 4 bytes of data for each pixel. So you should use "GRBW" rather than "GRB". "GRB" is for ordinary RGB strips.

[caternuson]

Agree, sounds like you have RGBW NeoPixels with the color order being GRBW. Needing to change the code to match the NeoPixels being used is expected and is a necessary step.

When change NEO_GRB to NEO_GRBW the colour turns normal

It all works as expected once the necessary code change has been made?