robotbit扩展板4个rgb灯,r-红,g-绿,b-蓝,值为0~255,可模拟出256*256*256种颜色. from microbit import * import neopixel r = 0 g = 0 b = 0 np = neopixel.NeoPixel(pin16, 4) for r in range(0,256,10): for g in range(0,256,10): for b in range(0,256,10): np[0] = (r, g, b) sleep(