Tag Archives: idea

An idea I had to detect and count pages

One of my old ideas, never made or tested.
I saw a post on Reddit with this question, I decided to post a little drawing using my idea.

Center of below picture shows pages (the lines), with coppertape going front to back and connect to following page

Inductive copper tape

Taking resistors of the same value, you’ll get a logarithmic voltage divider.
If you want the values evenly spaced, to make sure you are not misreading the value you have to make the resistors more like:
10k,6k,3k3,2k5,2k,1k68,1k5