1. Open the aliyun IoT website

Open Link

2. Create a product if you don't have any products

3. Add devices under the product

4. Now you have following important data which we will use them later

• ProductKey
• DeviceName
• DeviceSecret

they need to be fill in the PM4 mqtt settings as

5. input any client id you want

for example "12345" in our case.

6. please choose Auto for full client id,

the client id 12345 inputed is not the actual client id we send to Ali IoT Cloud. As per Ali policy, the client id need to complete with connection method and sign method.

But don't worry, if you choose auto, PM4 will complete the actual client id automatically.

7. please choose Auto for the username as well, PM4 will setup the required username required by Ali policy

8. the password will be genreated automacally by using hmacsha1 required by Ali policy

OK. now you can be connected. Next topic we will focus on the Pub/Sub

How to use Pub/Sub topics

1. edit the product details in Ali Iot Website

2. you can add customized topic by the naming rules of Ali

3. now you can see the topics are in the device's topic details

4. in the pm4, add those topics need to sub/pub

5. users can write those listening and sending macros to pub and sub the topics.

That's all. Thank you for reading it.

Author: Tom CHEN