How do you convert potentiometer values to voltage?

Hullo guys. I would like to convert my potentiometer readings into voltage..

This is my method. 

            sensorValue = potentiometer.Read(); // get the potentiometer reading.... Double Vxx = sensorValue * (1.0 / 1023) * 3.3; // convert to voltage String displayValue = Vxx.ToString();

Before doing the conversion, it displays the values i want(usually between 0 and 1023), but when i convert, everything goes wrong. instead of getting a value btn 0 and 3.3, i get funny values. I'd be glad for your help. Thanks.

Hi,

Not sure, but it might be a missing .0 on 1023.

Or, maybe you need to cast the sensor value to floating point in the scaling operation.

Coming from a world where numbers are fixed point I normally multiply first, then divide to ensure the best accuracy.

Paul

if you use the ms analog class just read - returns a single from 0-1 .. where 0 = 0% and 1 = 100%

multiply it with 3.3 and you have the voltage.

like its value is 0.5 = 50% = 1.65v

btw: if you really _have to_ use the sl class (or used readRaw on ms class) the correct formula is:

Single voltage= sensorValue * (3.3f / 1024f);