Measuring higher resistances (>1MOhms) with Uno

[johnerrington]

@KavinduLPSL

How to measure higher resistances (>1MΩ) accurately using a voltage divider with another high resistor as a reference, along with ADS1X15? When I use 1MΩ reference resistor it gives wrong results.

You havent given us much information to work with.
1: What degree of accuracy do you require? and why?
2: What circuit are you using?

How to make a schematic you can post.

When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

3: How accurately do you know the values of your "reference" and "unknown" resisitors
4: In what way are the results "wrong"?

5: What code are you using.?

Please read and answer all those questions.