Hi Charles ,

Thanks for the calculations ,i was reading the voltages by multimeter and my readings are very close to the calculated values.in example i get .91 volt when the fuel pot. is 11.4 ohms .
and i am sorry because i marked the R23 with * but forgot to mention i don't used it in the PCB. and the R3 that was soldered was 1K ,anyway your calculation was based on the A piont is True even now.
today i Wrote a new source and it gets 16 samples in 100 mS periods and then equals it and dispalys but it is quite slow , and not very accurate !. i was thinking about if i put a capacitor after ther R3 ,maybe it would normalize the spikes ?

Farshid J.H.