Been working on the automation of the shutters. Below is my designed circuit with the imagined logic :
That circuit will feed into the arduino code, as 3 different digital outputs.
The coolant sensor voltage from the vehicle is an analog 0-5Vdc signal. The signal will be tapped and fed into a voltage comparator using an OP-amp integrated circuit. Basically, I must determine (ie measure) the voltage that translates into 96c and use that as a reference signal for the voltage comparator. Basically, the voltage comparator will output a logical "0" (OFF) or "1" (ON) based on the desired trigger temperature for the coolant; in this case 96c.
Same applies for the Fan relays. If 12.6+ Vdc is detected, trigger a logical "1" which translates into "ON" in the logic.
Still a long way from implementing this...but it's a start.