Spent the evening trying to get the bar graphs working, They work individually but when all 3 are hooked up they do some crazy things. Still sorting it out hopefully a good nights sleep will reviel the answer.
Changed set up on temp readings, using 2 LCD temp guages one on water going to PC's and the other on water returning to Rad.
Bar graphs indicate voltage to fans ( basically anything under 6 volts no lights are on then at 12 volts give or take a bit full 10 light segment ) anything under 6 volts and the fans do not spin.
Fan voltage and speed are completly automated by sensing the return water temp before rad and second rad fan is controled by another probe measuring temp at exit of precooler rad.
Some what interesting point the return fan has dual temp probes. one for each returning line. while they are set to turn on fan at same temp they are Dioded off from each other so IF either one PC or 2 PC's are on it will be sensing for the highest temp and use it as the signal to turn fan on.
Had to reorder a few fittings ( should be here tommorrow) after I got the Rads in things were a little tighter than I had originally thought but I can work around this.
Aardil
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