eagle
I have almost finished a somewhat dense layout, and I have found out on the statistics menu that there are two wires of a smaller width that I don't really want to be using any more. The thing is that I am unable to spot these wires by just looking at the layout.
Is there a way to search for and highlight wires of a given width in Eagle?
First, you don't need to do home PCB etching to get real circuit boards made. BatchPCB and other prototype services can get you real, quality PCBs for (sometimes much) less than $50. If it's just for a temporary project, solderless breadboards are also a great tool. I will admit, however, that some projects fall into the middle of these categories.
Usually, I just poke the components through .2" graph paper for checking that an imagined layout will work. This seems to work well enough for most of the simple circuits that I make on perfboard. If you want to use Eagle PCB, configure the layout editor for 0.1" grid spacing, and display the lines:
Now you can lay it out on a model of your stripboard. You might even want to diagram the strips. Use the "Draw Lines" tool on a non-copper layer (like Documents) to avoid confusing Eagle with respect to electrical connections. Record where the strips should be left intact on one layer, and make wire jumpers on (an) other layer(s).
After that, it's up to you to create an intelligent layout. Since these kinds of boards are usually for development purposes, make it spacious and easy to understand. I try to organize power busses with higher voltages at the top and ground at the bottom, route signals from left to right, color-code connecting wires (esp. if you're not using stripboard), and provide lots of room for edits to fix the mistakes I know I will make. I also like to keep my components on one side and route wires on the other even when using double-sided board.
OK I finally figured it out. Once a new library is added you may need to 'enable' it's part sets by clicking the dot to the right of the part set in the Control Panel window in Eagle. Man this program has some major UI issues. :)
Best Answer
1 - Type "DRC" in the command line.
2 - In the "Sizes" tab, change the "Minimum Width" size to larger than the width of the traces you want to change.
3 - Do a DRC check. On the "DRC Errors" window it will show you "width" errors and the layer they are in. If you check the "centered" box, it will center the trace on the editor window when you select a specific error instance.
This does not answer your broader question of "how to highlight specific trace widths" but solves your problem of finding traces narrower than 'x' mil/mm.