> For the complete documentation index, see [llms.txt](https://cavedu.gitbook.io/cavedu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cavedu.gitbook.io/cavedu/hangeekduino/samplecode/input_module/lightsensor.md).

# 光感測器模組

![](/files/-MITY20bPISN7tjBcdE2)

## **指令**

![](/files/-MITJMkUxAeusWkSSp-M)

## **對應的**Arduino 語法

```
  analogRead(6);
```

### 範例 BlocklyDuino 積木畫布

根據光感測器模組的數值來決定LED模組的亮或暗，數值越大LED會暗，數值越小LED會亮。並在序列埠印出光感測器的數值。

![](/files/-MITJcdFPOkiSBfxi_wa)

## Arduino 程式

```
int Value;

void setup()
{
  pinMode(4, OUTPUT);

  Serial.begin(9600);

}


void loop()
{
  Value = (map(analogRead(6),0,1023,0,255));
  Serial.println((analogRead(6)));
  analogWrite(4, (255 - Value));
}
```

## 影片教學:

{% embed url="<https://youtu.be/NRi1vZWL3nY>" %}