ok2 sorry.
i want to build a circuit like this link
http://www.pablin.com.ar/electron/circuito/mc/termost/index.htm[/URL]
but i want the pic to also control the temperature.
as example, a box is heated by 4 bulb. n the sensor will detect the temperature.
when the temperature is 37c all 4 bulb will light up
when 38c 3 bulb will light up.
when 39c 2 bulb will light up.
when 40c 1 bulb will light up.
when 41c 0 bulb will light up n the fan will switch on
can u help me.