Using https://github.com/KiCad/kicad-templates to make an UNO shield, I fail to see the humor in having the shield’s ratsnest connect pins A0 and A1 on P2 to their additional breakouts on P3. I see absolutely no reason to clutter the shield with those traces when the UNO board itself already has them connected to each other. Yes, I’m sure there is some reason of convenience for the net to be in the shield’s list, but I’m only asking here how one adds to/subtracts from that ratsnest properly.
To further help me understand how to create and modify the ratsnest, I’d appreciate further help as follows:
Before I knew about the existence of such a thing as the ratsnest, I laid out a footprint (HX711 module.kicad_mod (6.4 KB)) for the HX711 module that comes in two (or even three now?) different pin spacings not using ratsnesting. I bought several of those modules of the disparate pin spacings and want a single footprint to handle them all. To clarify, the two styles of HX711 module differ significantly in their distance between two parallel rows of pins, measured perpendicularly to the rows. Therefore, the footprint has to duplicate one of the pin rows. I’m thinking to edit my original footprint design to employ ratsnest lines to that footprint/symbol/schematic/whatever to suggest an appearance that I know something about doing it right. I’m wondering how should I accomplish that? From what I’m gleaning on the forum, Eeschema is the tool for ratsnesting, but do you think I really have to make a .sch file for the module just so I can get this done?