Hi Folks!
Is there an object which turns the logarithm Values from my analog Potentiometer to Linear?
Regards, Mario
the math/log object theoretically should convert the value - don’t expect linearity or accuracy though.
A “log” pot is usually just an approximation using two separate areas of linear taper. And if you read a log pot using an ADC then convert the values to linear, precision will suffer.
image from “Beginners’ Guide to Potentiometers”
You can see that even with a mathematically ideal Log response (blue curve), half of the pot’s travel would be within the bottom 20% of the total resistance area - which means more noise and less precision.
Of course depending on your use case, this might be acceptable!
Yes, I thought of this.
Thank you very much for Explanation