# IoT物聯網

### WiFi須知

### 注意！KOI 2只能連接2.4GHz的網絡，請確保WiFi熱點支援2.4GHz的網絡。

### MakeCode編程

在MakeCode打開專案，點擊擴展一頁。

<figure><img src="https://kittenbothk.readthedocs.io/en/latest/_images/16-1.png" alt=""><figcaption></figcaption></figure>

在搜尋欄輸入koi 2。

<figure><img src="/files/v8PGKqCshXiZsiXziuOs" alt=""><figcaption></figcaption></figure>

加載成功後，積木欄會新增koi2的積木。

<figure><img src="/files/nGf4RzfogJMXUu8gAZwE" alt=""><figcaption></figcaption></figure>

### 編程積木

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsN6MlwBFbL3P67FzMMyL%2Fuploads%2FPTCn8iBkL2mRlll9o3sm%2Fimage.png?alt=media&#x26;token=d0f50193-99e4-4f16-8ea9-28322d35ccd6" alt=""><figcaption></figcaption></figure>

### 參考程式

### 連接WiFi網絡

{% hint style="info" %}
KOI 2需要使用2.4GHz的WiFi網絡，請注意。
{% endhint %}

{% hint style="info" %}
Armourbit用家請使用初始化Armourbit積木。
{% endhint %}

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6uJvpXC43onNIIwhMlWo%2Fuploads%2FPGyECwlPd2M3JqUBLDfO%2Fimage.png?alt=media&#x26;token=662ace3f-a8eb-4fbf-8a10-1d9643c88b1e" alt=""><figcaption></figcaption></figure>

{% embed url="<https://makecode.microbit.org/_cEy78WKd6XVR>" %}

[參考程式](https://makecode.microbit.org/_cEy78WKd6XVR)

#### 程式解說

1. 按A鍵連接WiFi。
2. 按B鍵顯示KOI的IP地址。

{% hint style="info" %}
在連接MQTT平台之前，請確保KOI 2能夠成功連接WiFi網絡並可以獲取IP地址。

假如KOI 2未能成功連線，KOI 2會顯示0.0.0.0。
{% endhint %}

<div><figure><img src="/files/1JEGipmciycDvup0eTzm" alt=""><figcaption><p>未能連接Wifi網絡</p></figcaption></figure> <figure><img src="/files/FTuBrjO7xH2bOJMeZ47o" alt=""><figcaption><p>成功連接WiFi網絡</p></figcaption></figure></div>

### 連接MQTT與收發信息

{% hint style="info" %}
Armourbit用家請使用初始化Armourbit積木。
{% endhint %}

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6uJvpXC43onNIIwhMlWo%2Fuploads%2FPGyECwlPd2M3JqUBLDfO%2Fimage.png?alt=media&#x26;token=662ace3f-a8eb-4fbf-8a10-1d9643c88b1e" alt=""><figcaption></figcaption></figure>

{% embed url="<https://makecode.microbit.org/_CgYhzEgsX22E>" %}

[參考程式](https://makecode.microbit.org/_CgYhzEgsX22E)

#### 程式解說

1. 按A鍵連接WiFi與MQTT平台。
2. 按B鍵向MQTT平台發送訊息。
3. Micro:bit會顯示MQTT平台收到的訊息。

### MakerCloud創客雲 參考程式

{% embed url="<https://makecode.microbit.org/_DovYtzcEhbfk>" %}

[參考程式](https://makecode.microbit.org/_DovYtzcEhbfk)

發送訊息的積木必須按照以下格式填寫，請將主題名稱填進話題，並且將話題的數據類型識別碼取代數據類型。

<figure><img src="/files/3LF2xT2T5A5TorVdrmzM" alt=""><figcaption></figcaption></figure>


---

# 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://sharinghub.kittenbot.hk/airelated/koi2/koi2makecode/iot.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.