the dpi guess (which is sometimes wrong) only happens if the height/width of the view box is specified in px. If you set that to either inches or mm it doesn’t apply. The latest CSS standard has set the value to 96 from 90 just to add more confusion though. All of your files have had in as the units on the view box so that isn’t a problem. The scale is the ratio of view box to height/width so a 1in by 1in drawing wants the view box set to 0 0 1000 1000 so 1 px = 1thou. That is where scale comes in. I think the 96px / in is why the scale factor should be 10.41667 in Inkscape (rather than 10)
Yep they get a bit large. Have a look at the part in this post, it is similar in nature with 2mm grove connectors. I corrected the schematic to add the necessary ground, VCC and signal connectors. Its similar to what you need to do for this one. It had something like 136 unassigned connectors in schematic when I started …
I meant complete the code to implement the rest of the stuff that parts editor is supposed to do in the source repository rather than just using the parts editor …
Peter