How-to-Setup-Ali-IoT-By-Using-PM4.md

+1. Open the aliyun IoT website
+
+[Open Link](https://iot.console.aliyun.com/prudcts)
+
+2. Create a product if you don't have any products
+
+![ali-product](uploads/ee8c458d4dd1759e9012216c116b30b4/ali-product.png)
+
+3. Add devices under the product
+
+![Screen_Shot_2020-02-12_at_11.01.58_AM](uploads/1b6375bba292e98d986b9d57158558a5/Screen_Shot_2020-02-12_at_11.01.58_AM.png)
+
+4. Now you have following `important` data which we will use them later
+
+* ProductKey
+* DeviceName
+* DeviceSecret
+
+![ali-device](uploads/7dcb5059516fc035e919706a0a3b6b33/ali-device.png)
+
+they need to be fill in the PM4 mqtt settings as
+
+![pm4-1](uploads/8b84a59abbc379b6b0d8cf390969aa8e/pm4-1.png)
+
+5. input any client id you want in the programming, for example "12345" in our example.
+
+6. please choose `Auto` for client id, PM4 will complete the Ali policy for the client id automatically
+
+7. please choose `Auto` for the username as well, PM4 will setup the required username by Ali policy
+
+8. the password will be genreated automacally by using `hmacsha1` by Ali policy
+
+OK. now you can be connected. Next topic we will focus on the Pub/Sub
+
+## How to use Pub/Sub topics