Recently purchased a 12 V 4-pin Cabinet cooling fan with following specifications :
Fan size: 80x80x25mm
Rated voltage: 12V/ 0.18A
Fan Speed: 2800 RPM + 10%
Air flow: 38.20 CFM
Noise Level: 28 DBA
Sleeve Bearing
Need to get started, any help appreciated !
What do you want to do with that fan? Where does the Arduino come into that picture?
I am not sure yet for what purpose I might use the fan and Arduino together, but for now I want to operate it using the Arduino Uno!
Well, check the data sheet of your fan on how it's to be hooked up, and start playing!
As it's 12V you probably need some MOSFET driver or so as well.
Okay I shall try that. Thanks !!
GautamD:
Recently purchased a 12 V 4-pin Cabinet cooling fan
Do you mean a 4-pin computer case fan.
Then the 4th pin can be used for speed control with an Arduino PWM pin.
Enter "4-pin fan" in the search box on top of this page.
Leo..
Yes @Wawa. Thanks, I'll search for the same. Cheers!!
I tried to find the datasheet for the fan I purchased but unfortunately there was no datasheet for that product. With specifications I mentioned above how should I control the fan? I have an Arduino Uno as well as a Mega 2560.. I need some advice to get started. Thanks.
GautamD
So is it a computer fan, with a standard 4-pin plug.
You can Google "4-pin fan" (images).
Or post a picture of the fan and connector.
Leo..
erm.. start by plugging in the fan and test if its working? 
if u want to turn on/off the fan wirelessly, there are projects that let u control the main plugs power.
Wawa I shall surely keep searching on google while I am also posting the images of the fan & the connector.
tzijie I'd like to more about what you are suggesting!!
Thanks for the help guys.. Cheers!!
That's a 92*92mm 12volt 2-pin (wire) computer fan.
No tach, no PWM.
Just connect the red and black wires from the fan to a 12volt supply.
Leo..
GautamD:
Here are some of the images of the 4 pin cabinet fan I have.
Image inline is more convenient.
4-pin molex.
Widely used in computers.
+5volt | GND | GND | +12volt
You could PWM this fan with a transistor in the negative lead.
But it might be easier to use a 4-pin fan from an old CPU cooler.
Truckloads are thrown away each year.
Ask a computer repair shop, or a dump shop.
Leo..
Okay, so its actually a 2 pin fan? But would I still be able to use it with an Arduino Uno or a Mega 2560? Thanks.
Regards
GautamD
Of course - just make sure to add an appropriate driver circuit for it (both the voltage and the current are too high for an Arduino to handle directly).
Could you please suggest something, so that I atleast get a headstart here..
Just asking to be sure its a 2 pin fan right?
Thanks
Regards, GautamD
There are two wires coming out of that fan, right? That makes it a two-wire fan.
To drive it, easiest to use a MOSFET driver (search this forum or Google for info, schematics, etc). You can even do PWM that way to control the speed.
