It is done, a final version of a guidance how to built up this fan/temperatue-control is available now
for the Download.
Here you can find some pictures and a detailed desription






the main characteristics in the overview:

- Micro-controller digitally regulated fan/temperature-control, regulation works 100% independently of the operating system (e.g. Windows...)
- with up to 8 sensors the temperatures of the PC's are monitored and the speed of the fans are adapted automatically
- very exact temperature sensors with a accuracy of 0,1°C (DS1820)
- several safety functions protect against the overheating of the computer hardware
- low-loss control of the fans by pulse-width-modulation (PWM), saves energy and produces no additional heat
- the fans can be regulated within a range of 40% to 100%
- The fan's speed is also shown in PWM mode, over the whole work area
- USB-interface
- suitable also for watercooling
- display of all values on LCD 1*20/2*20/4*20 (temperatures, fan's "rpm", alarm status...)
- simple operation over only 2 keys
- very flexible configuration possible (alarm temperatures, sensor-fan config, hysteresis...)
- storage of all settings in eeprom

Very nice mate, if I could only read German

Are you trying to sell this as a kit?

Here you can find a first translation of the description. But it is partly translated automaticly because my english is not so good. Projekt "Fan/Temperature-controll with USB-interface.

If you find some mistakes (and i think you will ) please write it to me.

Maybe someone also can help can help me in translation, please.

greets KeiAng

yes very nice!!!!

good tool for monitoring!

You can have a ready make kit for 40€. This kit contains all nessesary parts to build such a regulation (without LCD, without temp. sensors !)
If you like you can also get the LCD and sensors from me. Simply send me a mail to platine@keiang.de !

A guide in english will soon follow. (up to now only in german available)

If someone are not able to connect to my website and want to get the "HowTo built this Fan-Control", please simply send me a email to "rg256@gmx.de" with subjekt "HowTo Fan-Control" and i will send you the full archive containing a screenshot of my website, all plans and the HowTo.

thats quite good maty

Hey how much did it cost to build your own, I only ask because I'v seen a 6 fan controller with LCD display for around $20.00 US. But otherwise, making your own is very impressive, I don' know where I would even start.(Well actaully I do, I start with a german/english dictionary)

A "small" update of the project:

1.) Instead of a normal Text-LCDs (HD44780 etc.) also a graphics LCD can be connected now, with that some more information can be indicated at the same time. I used a GLCD with the controller "T6963C" (240 * 64 pixel) here.

Here is a short video: Video of the GLCD (press button "Auf gehts" to start download)
Description of the GLCD: Regulation with GLCD






2.) The software for Windows is now also almost ready. At this time all dates of the regulation can be indicated and adapted (temperature-, fan-, regulation dates as well as all configuration data: temperature limits, sensor-fan config, etc.).
As next a small interface comes for the software "Samurize" www.samurize.com included, with that everyone can represent the dates graphical likes he want to.
You find a precise description and even further information here: Windows Software



The most important enlargement is to be let indicate all dates in a diagram. With that one gets a very good overlooks about the regulation behavior and with that whether all attitudes are correct.
The diagram can be stored if required with a right click as a graphics file.







3.) With this enlargement bigger fans (>2W) or several can be connected at the same time. in total 6 fans with each 10 W can be connected.

Description of the fan enlargement: fan enlargement

Just a short update of this project. I have added support of a new graphic LCD:

graphic LCD during operation ( all data scrolling from down to upward ):





the setup menue on graphic LCD:










Mode choice by pressing switch:








on this graphic LCD I have tested now a diagram function:






short movie of diagram mode:


download movie ( to start download click on button "auf gehts" ): graphic LCD -> diagram mode

Link: graphic LCD with "SED1520"-Controller connected to fan control V1.4d