PWM controlled LCR-0202 test with temperature indication

[Roberto]

New results are almost amazing!
Look at the plots of the mean value of 1024 analog readings and the R2 of the formulas:

[nickb]

A simple look up table can be used to linearize (or other law) that with much greater accuracy that the typical potentiometer that uses a couple linear tracks to approximate the desired law.

[Roberto]

Exactly. I'm preparing some PWM/Ohm arrays for most used values, both for lin and log pots.

Next step will be a 9V supplied voltage divider with a 1 M resistor from 9V to one LDR (upper part of the pot) to another LDR (lower part of the pot) to ground. This way I can better measure that not only the rotation is correct, but I can also keep the whole pot value (LDR1 + LDR2) constant, as a real pot.

[Roberto]

Would it be possible to change the title of the thread?
Who's the person I have to ask it?

Thanks

[nickb]

Would it be possible to change the title of the thread?
Who's the person I have to ask it?

Thanks

I'm pretty sure it cannot be done.

[Roberto]

I would like to implement a developement of this idea into an upgraded HMI version.
A single 12ax7 cascaded double triode where I change some parameters by transposing this web page:

http://www.trioda.com/tools/triode.html

in C for a 3,5" HMI connected to an Arduino Due/Mega: I can show the main parameters on the HMI and hear what I'm seeing.

Some of you guys know how I can translate that page into C, or at least how to determine first five harmonic distortion amount and all other parameters?

Thanks alot.