After a week break I came back to my first KiCad PCB and got into the problem of clearance.
Till now (Protel from 1997) I was specifying clearance ‘from - to’ and not ‘for’.
Each of ‘From’ or ‘To’ could be: Pad/Net/Net class/Component/Component Class/Layer/Whole Board and some others I have never checked how to use them.
Simplifying the problem I have few nets being at +48V potential (PoE). I would like to specify a bigger then normal separation from them to all others (including GND zone) but not between them.
I can’t find how to specify it in KiCad.
Is it possible ?
If not - how do you live with it?
I didn’t checked it yet (expect too many errors to look through as I have routed only small part of my PCB) but I have read in KiCad doccumentations then when you run DRC the zones are automatically filled so to have them filled with that my bigger distance I can’t change that clearance just prior running DRC to have no errors reported about that nets are to close to each other. I also don’t wont to have to accept some errors - it is simple way to miss one (if not now then in some time in future).
Allow constraints to be defined in schematic editor and passed to board editor via netlist.
Update netlist file format to support constraints.
are not really needed, but looks like adding some (may be lot) complication to schematic and netlist making a task more developers time consuming.
I don’t see the difference if I define constrains in schematic or PCB.
I decided to move to KiCad when I sow Push & Shove routing demo. As it is usefull only when you can precisely define constrains I supposed it is also done.
Fortunately I have only few PCBs where constrains are more complicated. Unfortunately when I decided I am ready to start in KiCad the first PCB needed new version is one of them
