Re: gEDA-user: PCB footprints & polygons question

[michalwd1979 <michalwd1979@xxxxx>]

Many thanks for clarifications!

> 
> Activate "New polygons are full ones" in the settings menu to disable 
> removal of islands for new polygons. For existing polgons you can add 
> the fullpoly flag in a text editor. 
> 
> Note to Peter Clifton: This does not work in the OpenGL enables 
> version. Polygon snippets are removed no matter what the fullpoly flag 
> says.
> 

OK, I new about ""New polygons are full ones" setting but I'm using openGL version. I will try "official" one :-).

> 
> In pcb polygons do not have a preferred net. Instead, it is connected 
> to whatever connects to it. See the FAQ:
> http://geda.seul.org/wiki/geda:pcb_tips#how_can_i_connect_tracks_pads_or_vias_to_my_polygon
> 
> Because a polygon does not know, what net it should connect to, it 
> cannot automatically add thermals. You have to add them manually. The 
> same goes for tracks. You don't have to add the join flag individually 
> for every segment, though:
> 
> 1) Select all GND tracks with the net window. Alternatively type [f] on 
> on a GND track to select all connected copper. 
> 
> 2) Type [:] to bring up the command line interface. Give the command 
> SetFlag(selected, join)
>

I heard about this method before, and I also heard about a plug in to add thermals. If I remember correctly the plug in had some problems on my boards. I tried to look into the code, but no success :-(. I think that there is no good manual for writing pcb plugins available. I think that I will try again in future.

> 
> During manual routing pcb highlights all objects with the same net as 
> the point you started at. The setting "auto_enforece_DRC_clearence" has 
> to be activated to make this work.

Thank You for the tip!

Michael W.



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