Pro/Forums - View Single Post

ibmkg · 07-31-2007, 12:12 PM

Yep that will do the job. A tweak setting in software would make it easy.

However, during boot up the fan would run at full speed (in summers) as room temp would be 31C which is bad. Soon as windows loads, software would take over.

And yes, it is going to be a two way communication through RS232.

Timer interrupt is a good idea. In 89C51, I have only one left with serial com. I do not know why it didn’t hit me, since through timer I can count multiple Fan rpms.

BTW, I have been 'googling' but could not find much info regarding the 'yellow' wire. All I know is that it sends a square wave, now how to feed it to Microcontroller. i.e:

Any idea what is the output voltage of the yellow wire?

For the microcontroller coding, I would be using assembly language. For the software, J2SE ...JAVACOM.

I am studying your coding as I post. ohh and thanks.

07-31-2007, 12:12 PM	#8
ibmkg Cooling Savant Join Date: Jan 2005 Location: USA Posts: 129	Re: Q. Making a FAN controller Yep that will do the job. A tweak setting in software would make it easy. However, during boot up the fan would run at full speed (in summers) as room temp would be 31C which is bad. Soon as windows loads, software would take over. And yes, it is going to be a two way communication through RS232. Timer interrupt is a good idea. In 89C51, I have only one left with serial com. I do not know why it didn’t hit me, since through timer I can count multiple Fan rpms. BTW, I have been 'googling' but could not find much info regarding the 'yellow' wire. All I know is that it sends a square wave, now how to feed it to Microcontroller. i.e: Any idea what is the output voltage of the yellow wire? For the microcontroller coding, I would be using assembly language. For the software, J2SE ...JAVACOM. I am studying your coding as I post. ohh and thanks. __________________ NOTE: Suggestions are based on my perceptive. I could be erroneous. Therefore, no one has the right to criticize an individual other than rephrasing and or expressing his own annotations on the subject matter itself.