PapaG:
dhenry:
temp = (Vin / 1024.00 * 1100.00 -424.0) / 6.250 ;It is always a good idea to use as little floating point math as possible.
Absolutely! That way when you get the equation wrong, you'll hardly notice!
Hmm ^^!
I think both formulas are right!
temp = ( ((Vin/1024.00) * 1100.00) / 6.250) + minimum; //minimum = (-424.0/6.25)
Let's say: " (Vin/1024.00) * 1100.00 " = Voltage
Then: temp = Voltage/6.25 - (424/6.25)
Or temp = (Voltage-424)/6.25
So, I don't think there's a problem in the formula ^^! Or it is?! lol