# 光線模組

![](https://1275793585-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fcavedu%2F-LwX0sv5zFpqUfZMMsMP%2F-LwX4o9FsvZr41JLuWYF%2F0.png?generation=1576824948237388\&alt=media)

## 專案說明

使用「科易KEYES Arduino UNO R3 開發板」連接「光線模組」,讀取光線模組數值變化。

此**光線模組**包含於**「**[洞洞兩教學材料包 Education Kit 002](https://www.robotkingdom.com.tw/product/rk-education-kit-002/)**」**內。

## KEYES Arduino UNO R3電路圖

* [KEYES Arduino UNO R3](https://www.robotkingdom.com.tw/product/keyes-uno-r3/)
* 通用型彩色Sensor shield v5.0感測器擴充板
* 光線模組

**光線模組**是**類比訊號輸入**，可以接「A0 \~ A5」的KEYES Arduino UNO R3訊號端上。 本範例連接到「**A0」**

![](https://1275793585-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fcavedu%2F-LwX0sv5zFpqUfZMMsMP%2F-LwX4o9GDsRh68m9DtFs%2F1.png?generation=1576824948235774\&alt=media)

## Arduino 程式

每0.5秒鐘會讀取光線模組的數值一次， 並顯示在序列埠監控視窗上。

![](https://1275793585-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fcavedu%2F-LwX0sv5zFpqUfZMMsMP%2F-LwX4o9HJkLmM0O_oRdj%2F2.png?generation=1576824948142915\&alt=media)

產生出的 Arduino 程式如下

```c
void setup()
{
 Serial.begin(9600);
}
void loop()
{
 Serial.println(analogRead(A0));
 delay(500);
}
```


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