WS2812B - Basics


• AmebaD [ AMB23 / AMB21 / AMB22 / BW16/ AW-CU488 Thing Plus / AMB25 ] x 1

• WS2812B LED Strip / Ring / Stick / Board x1



In this example, we will be using the AmebaD board to control the WS2812B RGB LED, using the SPI peripheral to create the waveform necessary for the LEDs.
WS2812B basics allows you to control a single LED with a color or fill all the LED with the same color.


Firstly, connect the WS2812B to the Ameba board as shown in the following diagrams.

AMB21/AMB22 wiring diagram:

AMB23 wiring diagram:

BW16 wiring diagram:

BW16 type C wiring diagram:

AW-CU488 Thing Plus wiring diagram:

AMB25 wiring diagram:

To light up one individual LED or multiple LEDs with the same color, use WS2812B_Basics.
Open the example in “File” → “Examples” → “AmebaWS2812B” → “WS2812B_Basics”

In the sample code, modify NUM_OF_LEDS to be the number of LEDs that you have connected.

Next, compile and upload to Ameba, then press the reset button. You will see the first 3 LED light up with red, green, and blue light color individually and after a while all the LED will be filled with a color.

Code Reference

[1] WS2812B Datasheet:

Please confirm that QQ communication software is installed