V7 - trace avoids via and connector pin

Layout
1

Laying out a double sided board. Using parts that come with Kicad. Have associated footprints with schematic symbols. Copying a board from pictures to get a partial schematic so dropped a couple vias into the board where they exist. When I went to connect a trace it went all around it, seeming to avoid the via. When I started at the via I got a very small trace - the trace was different somehow. So I deleted the via and tried the more common way - run the trace to via location and hit V for via. That worked and switched to other side to route to a connector pin on the component side. Same avoiding the pad. I do have a connection to the connector pin on the other side but I don’t see how that should matter.

I am familiar with schematic entry and layout. Just not with Kicad. Is there some good, brief videos on how to use this with some tips?

2

Did a bit of experimenting and I cannot connect to any of the through hole parts on the F.Cu layer. The track avoids the pad. Here are a couple parts that have that issue.

LTV814 - used with footprint Package_DIP:DIP-4_W7.62mm
1N4148 - footprint Diode_THT:D_DO-35_SOD27_P12.70mm_Horizontal

The via it was avoiding was a connection on the B.Cu later.

3

Is there some good, brief videos on how to use this with some tips?

Albeit people with general experience often don’t like starter-tutorials I would nevertheless recommend the standard kicad tutorial: Getting Started in KiCad | 7.0 | English | Documentation | KiCad

For your specific questions: As I said in your other question - upload the project (Kicad main manager–>File–>archive project). Only than we can look into the schematic/board and give a good answer.

4

Do you have a rats nest connection to the pad you are routing?

5

Some new users common tracking blockers are:

  1. Using draw a line, not route a track. Graphic lines on a copper layer are NOT tracks
  2. The pads are just not the same net name - you can see these when you zoom in
  3. There is a runt track fragment of another net in the pad
6

Look like they are on the same net. I think that could have been why it wouldn’t route to a via I placed since it wasn’t associated with a net but that doesn’t seem to be the case with the terminal strip. Archive is attached. Maybe something to do with the reverse flow - layout to schematic… Connection to be made is via to COM terminal. I could model the part where the via is but it’s just an overvoltage clamp and not important to circuit operation so I skipped making a part for it.
CaddxNX320E.zip (2.0 MB)

7

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