AVR-Chat

Hi,

Anybody have some ideas for sensing temperature and controlling fans 
depending on temperature? I am thinking about using PWM to control fan 
speed and multiple triggers to request fan action, amongst them feedback 
from a temperature sensor.

For sensors I am thinking of using a NTC thermistor, DS1820 or LM35. To 
set the threshold levels I could use a potentiometer attached to an ADC 
channel or binary coded jumpers/switches. 

Anything I missed? Anybody knows of app notes or projects I could peak at 
to get some ideas to get started? I suspect this will be my first hands-on 
AVR project.

Adi