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Picture of Temperature-controlled USB fan @MilCandy
As summer is coming, I bought a USB fan from HuaQiangBei, Shenzhen. However, when I focus myself on work(or game), I could hardly notice its existence. If I can teach it how to think and execute its duty without my order, that will be more practical and fun! So roll your sleeves and follow me to refit a temp-controlled fan!            

Step 1:

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The structure of USB fan is pretty simple. When you break it down(or even you don't need to, just think in your mind), you can find it just consists of a motor and a key. To make it controllable, turn it over,  screw out the screws then we can continue to the next step.
 

Do you have any idea on to adopt this for a commercial desk fan(about 60W)? I'm trying to look for some circuits but they are too complicated...

Well my idea is to utilize the 3 speed control of a regular desk fan.. then at certain temperatures it will be switch on 1, 2, and 3, as temperature increases. Something like that

litliao2 years ago
@angpal59 So sorry for your confusion. The Seeedstudio account is not tied up with mine. I replied your question with that account yesterday. Did you receive it?
Jayefuu2 years ago
seeedstudio: A visitor to the site is asking a question about your project in Answers. Perhaps you'd be able to help them out?

http://www.instructables.com/answers/Is-anybody-experienced-in-MilCandy-and-grove-compo/
the-new-x3 years ago
And the source code is?
no need source code. The MilCandy is pre-programmed when shipped. So just need a few clicks to kick off a mini project. if you mean the firmware, try more info on Seeed Studio website, where you can find the open source file. :)