Re: I need to make a fan controller.
I accidentally found the website where I got my initial ideas for a fan controller!
Lots of good circuits with good explanations and ready made stripboard designs.
http://www.pcsilencioso.com/cpemma/index.html
EDIT: A quick google search led me to find that someone has created basically the same circuit as what I am describing (except without the indicator LED's).
http://www.instructables.com/id/Use-...-control-moto/
Just replace the battery pack with the 12V rail from the power supply. There is no need for the small capacitor they describe as PC fans are brushless. They only show a breadboard design, so a more permanent solution would need to be created (stripboard, PCB etc.) It includes a small explanation of the circuit and a simple test program for the Arduino microcontroller (only two lines of code). Adding the potentiometer and adjusting the PWM value based on it would only add a few more lines of code.
I accidentally found the website where I got my initial ideas for a fan controller!
Lots of good circuits with good explanations and ready made stripboard designs.
http://www.pcsilencioso.com/cpemma/index.html
EDIT: A quick google search led me to find that someone has created basically the same circuit as what I am describing (except without the indicator LED's).
http://www.instructables.com/id/Use-...-control-moto/
Just replace the battery pack with the 12V rail from the power supply. There is no need for the small capacitor they describe as PC fans are brushless. They only show a breadboard design, so a more permanent solution would need to be created (stripboard, PCB etc.) It includes a small explanation of the circuit and a simple test program for the Arduino microcontroller (only two lines of code). Adding the potentiometer and adjusting the PWM value based on it would only add a few more lines of code.
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