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WS2812B is a cascaded LED tricolor lamp with a chip inside. By sending commands from the outside, the brightness of the three primary colors can be controlled to complete the transformation of various colors. It also occupies very little IO and is easy to use.
We can open the routine in Arduino.
We input how many LED beads we have, and then the underlying interface is fixed. Just connect to the corresponding boards.
Two functions are called, with different operations, one is for each LED number to set the color of each light, and the other is global. The number of lights will light up the same color.
voidsetPixelColor(uint16_tled_Number, uint8_trColour, uint8_tbColour, uint8_tgColour);
voidfill(uint8_trColor, uint8_tgColor, uint8_tbColor, uint16_tfirst= 0, uint16_tcount= 0);
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提升卡
变色卡
千斤顶