I have 5-6 Analog inputs, with voltage input to it is controlled by resistance values in the range (0-200K, resolution 10ohms).
Looking for programming /setitng resistance values over PC.

Any ideas !

(Not looking for- Analog out or voltage input due to other limitation)

thanks
jis

 

I have 5-6 Analog inputs, with voltage input to it is controlled by resistance values in the range (0-200K, resolution 10ohms).
Looking for programming /setitng resistance values over PC.

Any ideas !

(Not looking for- Analog out or voltage input due to other limitation)

thanks
jis

Something like a digital pot? 10 ohm resolution might be hard to get. Maybe a digital pot at the output of a digital pot? I2C interface or simple 3-wire (Enable, up, down) are popular.
(edited to add ...)
Usually the pots work in 256 step increments, so a 200K pot steps in increments of about 780 ohms. If you put a 1K pot in series with that you get a resolution of about 4 ohms. Gross and fine adjustments.

 

yep.. digital potentiometer

 

If you need digital control of analog input voltages, why not use a I2C DAC?