查看“Light Indicator”的源代码

{{Language|Light Indicator}}
{| style="width: 800px;"
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==Objective==
Here we make a simple light indicator, which classify light value in three levels—green, blue and red.  

==Principle==

==Equipment==
{|class="wikitable"
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|Module||Number||Function 
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|[[Microduino-CoreUSB]]||1||Core board  
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|S[[Microduino-Sensorhub]]||1||Sensor pinboard 
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|[[Microduino-Light]]||1||light-sensitive sensor 
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|[[Microduino-Colorled]]||1||Colored led light 
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| [[Microduino-BM]]||1||Battery management
|}

 [[File:light_indicator.jpg|600px|center|thumb]]

==Hardware Buildup==
*Setup 1：Connect CoreUSB to your PC, open program examples, select the right board (Microduino-CoreUSB) and download program through serial port. 
[https://github.com/Microduino/Microduino_Tutorials/blob/master/MCookie_Tutorial/light_led/light_led.ino light_led]
*Setup2：Connect the light-sensitive resistor to A0 pin of Sensorhub and the colored LED light to D6 pin.
[[file:Microduino-sensorhub_rule.JPG|thumb|800px|center]]
[[file: light_indicator _A0_6.JPG|thumb|800px|center]]
*Setup5：Stack CoreUSB, Sensorhu and BM. 
[[file: light_indicator_module.JPG|thumb|800px|center]]
*Setup6：Connect the battery to BM. 
[[file: light_indicator _bm.JPG|thumb|800px|center]]

==Software Debuggin==
Code description: One part to acquire sensor values and the other part to control LED brightness and color change according the values. 
*Sensor pin description  
<source lang="cpp">
#define PIN 6
Adafruit_NeoPixel strip = Adafruit_NeoPixel(1, PIN, NEO_GRB + NEO_KHZ800);

#define Light_PIN A0
</source>
*Light intensity pre-set value and the light can be divided into three levels. 
<source lang="cpp">
#define Light_value1 400
#define Light_value2 800
</source>

*Light detection 
<source lang="cpp">
sensorValue = analogRead(Light_PIN);
</source>

*The colored LED will adjust color and brightness according to light intensity.  
<source lang="cpp">
if (sensorValue < Light_value1)
    colorWipe(strip.Color(0, map(sensorValue, 10, 400, 0, 255), 0));
  else if (sensorValue >= Light_value1 && sensorValue < Light_value2)
    colorWipe(strip.Color(0, 0, map(sensorValue, 400, 800, 0, 255)));
  else if (Light_value2 >= 800)
    colorWipe(strip.Color(map(sensorValue, 800, 960, 0, 255), 0, 0));
</source>

==Result==
Change light intensity from weak to strong, you can see gree, blue and red in order. 

==Video==

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