规划端到端架构
将传感器、开发板、网络和云端整合到一个设计中
规划端到端架构 是 CoddyKit 上的免费 Arduino & IoT Academy 课时。 这是第 1 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Arduino & IoT Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Arduino & IoT Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
The Capstone Goal
You are about to build a real smart-home sensor: it reads the room, sends data to the cloud, and you can update it wirelessly. Let's plan it first. 🚀
Why Plan First
A good architecture sketch saves hours of rewiring and rewriting. You decide what each part does before you touch a single wire.
Four Layers of an IoT Device
Most IoT projects share four layers: the sensors, the board that reads them, the network, and the cloud that stores and shows the data.
Layer 1: The Sensors
Start with what you want to know. Here a DHT sensor reads temperature and humidity, the raw signal your whole project is built around.
Layer 2: The Board
An ESP32 is your brain here: it reads the sensor and has built-in WiFi, so one chip handles sensing and connecting to the network.
Layer 3: The Network
The board joins your WiFi and speaks MQTT, a tiny messaging protocol perfect for sending small readings often without wasting power.
Layer 4: The Cloud
A cloud dashboard receives your messages, stores the history, and draws charts so you can watch the room from anywhere.
Draw the Data Flow
Picture one arrow per hop: sensor → board → WiFi → cloud → your phone. If you can draw it, you can build it.
List Your Parts
Before wiring, write a quick bill of materials: ESP32, DHT22, a pull-up resistor, jumper wires, and a USB cable to flash the first sketch.
Plan the Update Path
Because the device will live on a shelf, plan for OTA updates from day one so you never need to unplug it to fix a bug.
Name Your MQTT Topics
Decide topic names now, like home/livingroom/temp. Clear names keep the cloud side simple when you publish and subscribe later.
home/livingroom/temp
home/livingroom/humidity
home/livingroom/relayQuick Check
Time to test your plan.
Recap
You mapped four layers, sketched the data flow, listed your parts, and named your topics. With a clear plan, building the node comes next. 🧭
常见问题解答
「规划端到端架构」课时是免费的吗？
是的 — 「规划端到端架构」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Arduino & IoT Academy 课程的其余内容，请升级到 CoddyKit PRO。 Arduino & IoT Academy 课程共包含 4 节课。
「规划端到端架构」这节课中我会学到什么？
将传感器、开发板、网络和云端整合到一个设计中 你通过在浏览器中直接运行的动手代码来练习 Arduino & IoT Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Arduino & IoT Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Arduino & IoT Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 1 节课，共 4 节。
「规划端到端架构」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Arduino & IoT Academy 课中编写并运行代码吗？
能。每节 Arduino & IoT Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。