简介
这是一种内含芯片（WS2812）的LED灯条，用户可以单独控制每个LED，每米有60个RGB的LED,可以呈现出各种颜色。仅需要Arduino可以提供3.3V-5V的数字引脚驱动即可。
技术规格
每米包含60个灯珠
最大电流：1A（每米LED灯带）@5V（可以工作在3.3v-5V之间）
对于该条带，至少需要5V / 3A，因为它是3米长，如果电流不够，颜色可能不正确
芯片名称：WS2812
亮度等级：256
防水
连接图
示例代码
/*
This code can be a good test code for your strip
function: leds.setPixelColor(i,y) can be used to let number i of your led turn on with color of y
and you can draw your idea easily with this function but never forget function: led.show()
*/
#include <Adafruit_NeoPixel.h>
#define PIN 6 //The signal pin connected with Arduino
#define LED_COUNT 180 // the amount of the leds of your strip
// Create an instance of the Adafruit_NeoPixel class called "leds".
// That'll be what we refer to from here on...
Adafruit_NeoPixel leds = Adafruit_NeoPixel(LED_COUNT, PIN, NEO_GRB + NEO_KHZ800);
void setup()
{
leds.begin(); // Call this to start up the LED strip.
clearLEDs(); // This function, defined below, turns all LEDs off...
leds.show(); // ...but the LEDs don't actually update until you call this.
}
void loop()
{
for (int i=0; i<LED_COUNT; i++)
{
rainbow(i);
delay(50); // Delay between rainbow slides
}
}
// Sets all LEDs to off, but DOES NOT update the display;
// call leds.show() to actually turn them off after this.
void clearLEDs()
{
for (int i=0; i<LED_COUNT; i++)
{
leds.setPixelColor(i, 0);
}
}
// Prints a rainbow on the ENTIRE LED strip.
// The rainbow begins at a specified position.
// ROY G BIV!
void rainbow(byte startPosition)
{
// Need to scale our rainbow. We want a variety of colors, even if there
// are just 10 or so pixels.
int rainbowScale = 192 / LED_COUNT;
// Next we setup each pixel with the right color
for (int i=0; i<LED_COUNT; i++)
{
// There are 192 total colors we can get out of the rainbowOrder function.
// It'll return a color between red->orange->green->...->violet for 0-191.
leds.setPixelColor(i, rainbowOrder((rainbowScale * (i + startPosition)) % 192));
}
// Finally, actually turn the LEDs on:
leds.show();
}
// Input a value 0 to 191 to get a color value.
// The colors are a transition red->yellow->green->aqua->blue->fuchsia->red...
// Adapted from Wheel function in the Adafruit_NeoPixel library example sketch
uint32_t rainbowOrder(byte position)
{
// 6 total zones of color change:
if (position < 31) // Red -> Yellow (Red = FF, blue = 0, green goes 00-FF)
{
return leds.Color(0xFF, position * 8, 0);
}
else if (position < 63) // Yellow -> Green (Green = FF, blue = 0, red goes FF->00)
{
position -= 31;
return leds.Color(0xFF - position * 8, 0xFF, 0);
}
else if (position < 95) // Green->Aqua (Green = FF, red = 0, blue goes 00->FF)
{
position -= 63;
return leds.Color(0, 0xFF, position * 8);
}
else if (position < 127) // Aqua->Blue (Blue = FF, red = 0, green goes FF->00)
{
position -= 95;
return leds.Color(0, 0xFF - position * 8, 0xFF);
}
else if (position < 159) // Blue->Fuchsia (Blue = FF, green = 0, red goes 00->FF)
{
position -= 127;
return leds.Color(position * 8, 0, 0xFF);
}
else //160 <position< 191 Fuchsia->Red (Red = FF, green = 0, blue goes FF->00)
{
position -= 159;
return leds.Color(0xFF, 0x00, 0xFF - position * 8);
}
}
文件
Arduino Library for LED Strip
RGB LED Strip Datasheet
Arduino IDE (根据能够使用的Arduino版本来选择，不要盲目追求最新版本)， 点击下载Arduino IDE
Mind+ 上传模式编程
1、下载及安装软件。下载地址：http://www.mindplus.cc 详细教程：Mind+基础wiki教程-软件下载安装
2、切换到“上传模式”。 详细教程：Mind+基础wiki教程-上传模式编程流程
3、“扩展”中选择“主控板”中的“Arduino Uno”，“显示器”中加载“WS2812 RGB灯”。 详细教程：Mind+基础wiki教程-加载扩展库流程
4、进行编程，程序如下图：
5、菜单“连接设备”，“上传到设备”
结果
代码上传完成后，观察到灯带从第一颗LED到第七颗LED循环点亮，且呈现蓝色光。
Mind+ Python模式编程（行空板)
Mind+Python模式为完整Python编程，因此需要能运行完整Python的主控板，此处以行空板为例说明
连接图
注意：
1、在使用外部供电时，灯带连接行空板只需要接***GND***与***信号线***
2、PinPong当前版本（V0.5.1）仅支持同时使用一条灯带
操作步骤
1、下载及安装官网最新软件。下载地址：https://www.mindplus.cc 详细教程：Mind+基础wiki教程-软件下载安装
2、切换到“Python模式”。“扩展”中选择“官方库”中的“行空板”和“pinpong库”中的”pinpong初始化“和“WS2812 RGB灯”。切换模式和加载库的详细操作链接
3、进行编程
4、连接行空板，程序点击运行后，可在终端查看数据。行空板官方文档-行空板快速上手教程 (unihiker.com)
代码编程
以pinpong库为例，行空板官方文档-行空板快速上手教程 (unihiker.com)
# -*- coding: UTF-8 -*-
# MindPlus
# Python
from pinpong.extension.unihiker import *
from pinpong.board import Board,Pin
from pinpong.board import NeoPixel
from pinpong.board import Board
import time
Board().begin()
my_variable = 0
np1 = NeoPixel(Pin((Pin.P22)),7)
np1.brightness(255)
while True:
while not ((my_variable == 7)):
np1.range_color(0,my_variable,0x0000FF)
my_variable = (my_variable + 1)
time.sleep(0.5)
np1.clear()
my_variable = 0
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