Hi,
Here is how I do it, using Freeroute.
In Kicad, with a copper plane selected as the working plane, use filled zones
to mark the protected areas.
The filled zones should be connected to <no net>.
Once the board is finished, export to DSN
Edit the DSN using notepad..look for entries similar to this:
(plane @:no_net_0 (polygon Copper 0 8822.8 -5578.7 8822.8 -2940.9 6618.1
-2940.9 6618.1 -3019.7
8783.5 -3019.7 8783.5 -5578.7))
(plane @:no_net_0 (polygon Component 0 8822.8 -5578.7 8822.8 -2940.9
6618.1 -2940.9 6618.1 -3019.7
8783.5 -3019.7 8783.5 -5578.7))
(The above defines areas on the copper and component side opposite each other,
other planes may be defined, all planes are independent.)
Edit the line to change 'plane @:no_net_0'
to keepout, for example:
(keepout (polygon Copper 0 8822.8 -5578.7 8822.8 -2940.9 6618.1 -2940.9
6618.1 -3019.7
8783.5 -3019.7 8783.5 -5578.7))
When imported to freeroute the required areas are protected.
You can do it in Freeroute but every time you change the board you need to
redefine the keepout areas, I find doing it in kicad is much easier.
regards John
--- In [email protected], "josh_eeg" <josh...@...> wrote:
>
>
> I guess I could make a pad that goes on both sides of the board in foot print
> builder then remove it after routing.
>
> http://cyclerecorder.org/footprintbuilder/
>
> --- In [email protected], "josh_eeg" <josheeg@> wrote:
> >
> > how do I use kicad and freeroute to keep areas free of routing under chips?
> > they are isolation chips.
> >
>
