# 滾珠開關模組

![](/files/-LwRuO9y8mQz0FYcUi40)

## 專案說明

使用「科易KEYES Arduino UNO R3 開發板」連接「滾珠開關模組」, 讀取滾珠開關模組開啟或關閉。

此**滾珠開關模組**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
* 滾珠開關模組

**滾珠開關模組**是**數位訊號輸入**， 可以接「D0 \~ D13」的 KEYES Arduino UNO R3訊號端上。 本範例連接到「**D3」**

![](/files/-LwRuO9zzrZfbgS3qStG)

## Arduino 程式

每0.5秒鐘讀取滾珠開關模組狀態，並顯示在序列埠監控視窗 (搖動滾珠開關模組時，可以感覺到有滾珠在移動)。

![](/files/-LwRuOA-6pBQj9pYjKDZ)

產生出的 Arduino 程式如下

```c
void setup()
{
 pinMode(3, INPUT);
 Serial.begin(9600);
}
void loop()
{
 Serial.println(digitalRead(3));
 delay(500);
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cavedu.gitbook.io/cavedu/rk002/module/002_advanceballswitch.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.