My circuit is a automatic laptop cooler. I have try to add two more comparators in to the current circuit where each comparator lights a colored LED when a certain temperature is sensed, however i tried, but did not work for the reason i do not know how to combine them together. another idea was when a certain temperature is senered they will be a fixed voltage and they will be three LED with 3 fixed voltage, that come on when that certain temperature hits. e.g. 25ºC will be 5v which will light up LED 1 and 35ºC will be 8v which will light up LED 2, however this was too complex and did not work.
I will appreciate any help or advice and thank you for reading this.