ADC Calculation is getting wrong

[Ali Reza Danish]

I'm using a potentiometer to measure angle. Since potentiometers max angle varies I'm using another potentiometer to adjust the max angle.
But this calculation is not working. In the maximum range Shaft angle should have shown 360 but its showing 499.That means only (shaftVolt * 100)
is working. And dividing it with Ratio is not working.
AdjVolt = (AdjVolt * 100) / 1.38611
Ratio = (499 / AdjVolt)
//shaftVolt = (shaftVolt * 100) / 1.38611
shaftVolt = (shaftVolt * 100) / Ratio

Thank you

[LeighM]

Hi
Your Ratio variable is an integer, it should be a float

[Ali Reza Danish]

I have changed Ratio from Int to Float. Now its showing just 0 wherever the Potentiometer is.

Thanks.

[LeighM]

The LCD PrintNumber() can only print integers.
For float values first convert to a string with FloatToString$()
Then print the string

[Ali Reza Danish]

Thanks Leigh,
It worked. But showing the value e.g as 270.434245 but if I want to show just two or three values after decimal as "176.34" or completely remove the values after decimal point along with the point "." as"176" what should I do.

[LeighM]

Code: Select all

flt = 3.14159
str = FloatToString$ (flt,2)