Calculating Unknown Resistor with Arduino

[johnerrington]

@julian_orteil

My current bus bar is quite robust as it is and is soldered directly to the PSU. It's only the wire leading into the resistor networks that are thin.

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…

81 responses addressing incorrect issues because your circuit has been represented incorrectly.
This shows the importance of STARTING with a circuit diagram that correctly and accurately represents your compoments and how they are connected.

A picture is worth a thousand words. Here is my new best guess at how your circuit is connected

Rw represent the thin wires.

But perhaps it would be easier if YOU showed us?