8、外接八位RGB彩虹灯环

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#外接八位RGB彩虹灯环

from mpython import *
import neopixel
import time

my_rgb = neopixel.NeoPixel(Pin(Pin.P8), n=8, bpp=3, timing=1)

def make_rainbow(_neopixel, _num, _bright, _offset):
    _rgb = ((255,0,0), (255,127,0), (255,255,0), (0,255,0), (0,255,255), (0,0,255), (136,0,255), (255,0,0))
    for i in range(_num):
        t = 7 * i / _num
        t0 = int(t)
        r = round((_rgb[t0][0] + (t-t0)*(_rgb[t0+1][0]-_rgb[t0][0]))*_bright)>>8
        g = round((_rgb[t0][1] + (t-t0)*(_rgb[t0+1][1]-_rgb[t0][1]))*_bright)>>8
        b = round((_rgb[t0][2] + (t-t0)*(_rgb[t0+1][2]-_rgb[t0][2]))*_bright)>>8
        _neopixel[(i + _offset) % _num] = (r, g, b)


offset = 0
while True:
    make_rainbow(my_rgb, 8, 6, offset)
    offset = offset + 1
    my_rgb.write()
    time.sleep_ms(100)

 

点赞  2020-4-19 15:18

mPython X 图形编程

 

20.jpg

点赞  2020-4-19 15:27

8W.gif

点赞  2020-4-19 15:34

9、24位流动RGB彩虹灯环

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#24位流动RGB彩虹灯环

from mpython import *
import neopixel
import time

my_rgb = neopixel.NeoPixel(Pin(Pin.P8), n=24, bpp=3, timing=1)

def make_rainbow(_neopixel, _num, _bright, _offset):
    _rgb = ((255,0,0), (255,127,0), (255,255,0), (0,255,0), (0,255,255), (0,0,255), (136,0,255), (255,0,0))
    for i in range(_num):
        t = 7 * i / _num
        t0 = int(t)
        r = round((_rgb[t0][0] + (t-t0)*(_rgb[t0+1][0]-_rgb[t0][0]))*_bright)>>8
        g = round((_rgb[t0][1] + (t-t0)*(_rgb[t0+1][1]-_rgb[t0][1]))*_bright)>>8
        b = round((_rgb[t0][2] + (t-t0)*(_rgb[t0+1][2]-_rgb[t0][2]))*_bright)>>8
        _neopixel[(i + _offset) % _num] = (r, g, b)


offset = 0
while True:
    make_rainbow(my_rgb, 24, 10, offset)
    offset = offset + 1
    my_rgb.write()
    time.sleep_ms(100)

 

点赞  2020-4-19 15:49

mPython X 图形编程

 

21.jpg

点赞  2020-4-19 15:51

W24.gif

点赞  2020-4-19 16:00

10、neopixel --- WS2812 灯(环)带
NeoPixels也被称为WS2812 LED彩带(环),是连接在一起的全彩色led灯串。你可以设置他它们的红色,绿色和蓝色值, 在0到255之间。neopixel模块可通过精确的时间控制,生成WS2812控制信号。

 

构建对象
class NeoPixel(pin, n, bpp=3, timing=0, brightness=1.0)
pin :输出引脚,可使用引脚见下文
n :LED灯的个数
bpp:
3:默认为3元组RGB
4:对于具有3种以上颜色的LED,例如RGBW像素或RGBY像素,采用4元组RGBY或RGBY像素
timing:默认等于0,为400KHz速率;等于1,为800KHz速率
brightness:亮度调节,范围0~1,默认为1.0

 

注意
NeoPixel可使用的pin引脚有掌控板的P5,P6,P7(板上RGB),P8,P9,P11,P13,P14,P15,P16,P19,P20,--本实验接在P8

 

方法
NeoPixel.write(),
把数据写入LED中。

 

示例:
np[0] = (255, 255, 255) # 设置第一个LED像素为白色
np.write()

 

NeoPixel.fill(rgb_buf)
填充所有LED像素。

 

rgb_buf :rgb
颜色
示例:
np.fill( (255, 255, 255) )

 

NeoPixel.brightness(brightness)
亮度调节,范围0~1.0

点赞  2020-4-19 16:09

本实验场景图

 

22.jpg

点赞  2020-4-19 16:12

11、24位弹跳RGB彩虹灯环程序之二

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#24位弹跳RGB彩虹灯环程序之二

from mpython import *
import neopixel
np = neopixel.NeoPixel(Pin(Pin.P8), n=24,bpp=3,timing=1)


def wheel(pos):
    # 通过改变在0和255之间的每个颜色参数产生彩虹色光谱
    # Input a value 0 to 255 to get a color value.
    # The colours are a transition r - g - b - back to r.
    if pos < 0 or pos > 255:
        r = g = b = 0
    elif pos < 85:
        r = int(pos * 3)
        g = int(255 - pos*3)
        b = 0
    elif pos < 170:
        pos -= 85
        r = int(255 - pos*3)
        g = 0
        b = int(pos*3)
    else:
        pos -= 170
        r = 0
        g = int(pos*3)
        b = int(255 - pos*3)
    return (r, g, b)

def cycle(np,r,g,b,wait=20):
    # 循环效果,有一个像素在所有灯带位置上运行,而其他像素关闭。
    for i in range(4 * np.n):
        for j in range(np.n):
            np[j] = (0, 0, 0)
        np[i % np.n] = (r, g, b)
        np.write()
        sleep_ms(wait)


def bounce(np,r,g,b,wait=20):
    # 弹跳效果,等待时间决定了弹跳效果的速度
    n=np.n
    for i in range(4 * n):
        for j in range(n):
            np[j] = (r, g, b)
        if (i // n) % 2 == 0:
            np[i % n] = (0, 0, 0)
        else:
            np[n - 1 - (i % n)] = (0, 0, 0)
        np.write()
        sleep_ms(wait)


def rainbow_cycle(np,wait_us):
    # 彩虹效果
    n=np.n
    for j in range(255):
        for i in range(n):
            pixel_index = (i * 256 // n) + j
            np[i] = wheel(pixel_index & 255)
        np.write()
        sleep_us(wait_us)

while True:
    cycle(np,50,50,50,wait=20)
    bounce(np,50,0,0,wait=20)
    rainbow_cycle(np,20)

 

点赞  2020-4-19 17:54

W24-.gif

点赞  2020-4-19 18:20

板载RGB

 

RGB LED控制类指令,用于控制掌控板的3颗RGB ws2812灯珠,rgb对象为neopixel的衍生类,继承neopixel的方法

 

rgb[n] = (r, g, b)

描述: 设置对应灯珠的颜色,n 为板载RGB灯的个数,第一个灯为0, r、g、b 为颜色亮度值,范围值为0~255

 

rgb.write()

描述: 把数据写入RGB灯珠中

 

rgb.fill( (r, g, b) )

描述: 填充所有灯珠颜色及亮度, r、g、b 为颜色亮度值,范围值为0~255

点赞  2020-4-22 05:36

外部RGB

外部RGB灯带灯环控制类指令

 

class NeoPixel(pin, n, bpp=3, timing=0)

描述: 构建对象

23.jpg

参数:

pin - 输出引脚

n - LED灯的个数

bpp - bpp=3,默认为3元组RGB;bpp=4,对于具有3种以上颜色的LED,例如RGBW像素或RGBY像素,采用4元组RGBY或RGBY像素

timing - 默认等于0,为400KHz速率;等于1,为800KHz速率

 

NeoPixel.write()

描述: 把数据写入RGB灯珠中

 

NeoPixel.fill( (r, g, b) )

描述: 填充所有灯珠颜色及亮度, r、g、b 为颜色亮度值,范围值为0~255

点赞  2020-4-22 08:11

12、推荐RGB颜色参考对照表(非常细致)
https://tool.oschina.net/commons?type=3

 

24.jpg

点赞  2020-4-25 18:56

13、依次点亮更亮的流水灯

 

 #MicroPython动手做(13)——掌控板之RGB三色灯
#依次点亮更亮的流水灯

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#依次点亮更亮的流水灯

from mpython import *

import time
while True:
    rgb.fill((int(102), int(102), int(102)))
    rgb.write()
    time.sleep_ms(1)
    time.sleep_ms(500)
    rgb.fill( (0, 0, 0) )
    rgb.write()
    time.sleep_ms(1)
    for k in range(3):
        rgb[k] = (int(((k + 1) * 66)), int(0), int(0))
        rgb.write()
        time.sleep_ms(1)
        time.sleep_ms(500)
    for k in range(3):
        rgb[k] = (int(0), int(((k + 1) * 45)), int(0))
        rgb.write()
        time.sleep_ms(1)
        time.sleep_ms(500)
    for k in range(3):
        rgb[k] = (int(0), int(0), int(((k + 1) * 85)))
        rgb.write()
        time.sleep_ms(1)
        time.sleep_ms(500)

 

点赞  2020-5-5 09:39

mPython 图形编程

 

25.jpg

点赞  2020-5-5 09:43

36.gif

37.gif

点赞  2020-5-5 10:14

14、P24灯环4色流水钟摆灯

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#P24灯环4色流水钟摆灯

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#P24灯环4色流水钟摆灯

from mpython import *
import neopixel
import time

my_rgb = neopixel.NeoPixel(Pin(Pin.P8), n=24, bpp=3, timing=1)


while True:
    for i in range(23, -1, -1):
        my_rgb[i] = (30, 30, 30)
        my_rgb.write()
        time.sleep_ms(30)
    my_rgb.fill( (0, 0, 0) )
    my_rgb.write()
    for i in range(24):
        my_rgb[i] = (0, 30, 0)
        my_rgb.write()
        time.sleep_ms(30)
    my_rgb.fill( (0, 0, 0) )
    my_rgb.write()
    for i in range(23, -1, -1):
        my_rgb[i] = (50, 0, 0)
        my_rgb.write()
        time.sleep_ms(30)
    my_rgb.fill( (0, 0, 0) )
    my_rgb.write()
    for i in range(24):
        my_rgb[i] = (0, 0, 180)
        my_rgb.write()
        time.sleep_ms(30)
    my_rgb.fill( (0, 0, 0) )
    my_rgb.write()

 

点赞  2020-5-5 15:26

mPython X 图形编程

 

38.jpg

点赞  2020-5-5 15:31

W24-2.gif

点赞  2020-5-5 15:43

15、声控RGB灯环

 

通过声音传感器检测到音乐声音的大小,并将其转换为亮灯的数量。

 

#MicroPython动手做(13)——掌控板之RGB三色灯
#声控RGB灯环

from mpython import *
import neopixel

my_rgb = neopixel.NeoPixel(Pin(Pin.P8), n=24, bpp=3, timing=1)

def upRange(start, stop, step):
    while start <= stop:
        yield start
        start += abs(step)

def downRange(start, stop, step):
    while start >= stop:
        yield start
        start -= abs(step)


while True:
    oled.fill(0)
    oled.DispChar("声音大小", 0, 0, 1)
    oled.DispChar((str(sound.read())), 0, 16, 1)
    oled.show()
    sheng = sound.read() // 140
    if sheng == 0:
        my_rgb.fill( (0, 0, 0) )
        my_rgb.write()
    else:
        for i in (0 <= int(sheng)) and upRange(0, int(sheng), 1) or downRange(0, int(sheng), 1):
            my_rgb[i] = (0, 50, 0)
            my_rgb.write()

 

点赞  2020-5-5 16:22
电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 京公网安备 11010802033920号
    写回复