查看“4RGB LED”的源代码

[[文件:黑色传感器最终版12.20-13.png|350px|缩略图|右]]
== 概述 ==
单板级联4颗RGB灯珠，采用LED专用主控芯片WS2812，支持单总线控制，仅需一根管脚即可控制所有LED，并且模块支持级联控制，可以多个模块同时控制，不占用管脚资源。可实现256级亮度显示，16777216种颜色的全真色彩显示颜色。
== 技术参数 ==
* 工作电压：VCC 3.3-5V
* 通讯方式：单总线控制
* 功 率：0.3W/颗
* 级联4颗灯珠
* 灰度等级：256级
* 16777216种颜色的全真色彩
* 模块尺寸：24x46x7.5mm

== 引脚定义 ==
{| class="wikitable"                                                    
|-
| <small>VCC</small> || <small>电源</small>
|-
| <small>NC</small> || <small>空脚</small>
|-
| <small>DI</small> || <small>控制数据信号输入</small>
|-
| <small>GND</small> || <small>地</small>
|}

== 使用教程 ==
=== <small>Arduino示例</small> ===
[http://wiki.labplus.cn/images/d/d0/Adafruit_NeoPixel-master.zip RGB LED库文件下载]

<pre style="color:blue">
// 程序功能：控制4个RGB灯依次按红绿蓝颜色点亮//
// This is a demonstration on how to use an input device to trigger changes on your neo pixels.
// You should wire a momentary push button to connect from ground to a digital IO pin.  When you
// press the button it will change to a new pixel animation.  Note that you need to press the
// button once to start the first animation!

#include "Adafruit_NeoPixel.h"

#define PIXEL_PIN    7    // Digital IO pin connected to the NeoPixels.

#define PIXEL_COUNT  4    //级联数量

// Parameter 1 = number of pixels in strip,  neopixel stick has 8
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_RGB     Pixels are wired for RGB bitstream
//   NEO_GRB     Pixels are wired for GRB bitstream, correct for neopixel stick
//   NEO_KHZ400  400 KHz bitstream (e.g. FLORA pixels)
//   NEO_KHZ800  800 KHz bitstream (e.g. High Density LED strip), correct for neopixel stick
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.setBrightness(50);     //调亮度
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
	for(uint16_t num1=0;num1<PIXEL_COUNT;num1++)
	{
		strip.setPixelColor(num1,255,0,0);  //设置红色
	}
	 strip.show();   //显示
	 delay(500);
	 for(uint16_t num1=0;num1<PIXEL_COUNT;num1++)
	{
		strip.setPixelColor(num1,0,255,0);   //设置绿色
	}
	 strip.show();   //显示
	 delay(500);
	  for(uint16_t num1=0;num1<PIXEL_COUNT;num1++)
	{
		strip.setPixelColor(num1,0,0,255);    //设置蓝色
	}
	 strip.show();    //显示
	 delay(500);

}
</pre>

=== <small>MicroPython示例</small> ===
注意：彩灯位置是从"0"开始计算，如控制N个彩灯，依次为np[0]...np[n-1]
==== <small>连接示意图</small> ====
[[文件:RGB连接图.jpg|800px|居中]]
<pre style="color:blue">
from microbit import *
import neopixel
import math
display.off()

np=neopixel.NeoPixel(pin0,4)      #pin0为控制引脚，级联4个RGB


while True:
    for i  in range(4):
        np[i]=  (255,0,0)               #设置4颗灯珠显示颜色，颜色为红
    np.show()                           #刷新显示颜色
    for i  in range(4):
        np[i]=  (0,255,0)                #设置4颗灯珠显示颜色，颜色为绿
    sleep(1000)                
    np.show()                           #刷新显示颜色
    for i  in range(4):        
        np[i]=  (0,0,255)               #设置4颗灯珠显示颜色，颜色为蓝
    sleep(1000)
    np.show()                            #刷新显示颜色
    sleep(1000)

   
</pre>

=== <small>图形化示例</small> ===
连接图同上
{|
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| [[文件:4rgbled grap.png|800px|无框]]
|}
== 版本历史记录 ==

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|- style="text-align:center;background-color:#6fa8dc;color:#fffff;" 
!width="10%"|Version !!width="15%"| Date !! Note   <small>[+]新增[-]删除[^]修复</small>
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| V2.0 || || style="text-align:left"|
|}