Re: gEDA-user: how to add a rat to a via?

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

ahhh a rat in my mind is a potential trace between two points of a
netlist. If you want to draw a trace that isn't part of the netlist then
a rat has no meaning.

at least in my mind.

Steve M.

Lope De Vega wrote:
>> Check me if I am wrong... you have a pin that isn't
>> part of a net and
>> you are trying to route a trace from that pin to a
>> via. And it won't
>> physically connect to the via?
>>     
>
> That's exactly what I was trying to say, sorry my
> english. As you say, if I turn off "autoenforce DRC
> clearance" I can then draw a line (not a rat) from the
> pin to the via, perhaps this is the way of doing it.
>
> I've only checked this with a unfinished layout, so
> perhaps going this way could have side effects I don't
> know about,  or maybe it should just leave this step
> to the end of process so it won't break anything.
>
> Thanks.
>
>
>   
>>  Steve M.
>>
>> Lope De Vega wrote:
>>     
>>> --- Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>
>>>       
>> wrote:
>>     
>>>   
>>>       
>>>> Dang first though that came through my brain was
>>>>         
>> the
>>     
>>>> concept of trying
>>>> to shove a rat down a via.
>>>>
>>>> When you say it doesn't work are you talking
>>>>         
>> about
>>     
>>>> the drc complaining?
>>>>
>>>> Steve Meier
>>>>
>>>>     
>>>>         
>>> Am no, it doesn't complain, but it doesn't work,
>>>       
>> nor
>>     
>>> to a via or to a hole. What I'm doing is selecting
>>>       
>> the
>>     
>>> pin with the line tool trying to draw a line from
>>>       
>> it
>>     
>>> to via, though it doesn't stick to it.
>>>
>>>   
>>>       
>>>> Lope De Vega wrote:
>>>>     
>>>>         
>>>>> Hello,
>>>>>
>>>>> I've got a chip on my layout. In gscheme I
>>>>>           
>> didn't
>>     
>>>>>       
>>>>>           
>>>> bind
>>>>     
>>>>         
>>>>> some of it's pins, though I'd like to, once in
>>>>>       
>>>>>           
>>>> pcb,
>>>>     
>>>>         
>>>>> add a via and connect the pin to it, How do you
>>>>>       
>>>>>           
>>>> use to
>>>>     
>>>>         
>>>>> do this?
>>>>>
>>>>> I've tried connecting it to a terminal in
>>>>>           
>> gscheme
>>     
>>>>>       
>>>>>           
>>>> and
>>>>     
>>>>         
>>>>> just leaving it like that, though I'm curious. 
>>>>>
>>>>> In pcb, I can add rat lines from such a chip's
>>>>>       
>>>>>           
>>>> pins to
>>>>     
>>>>         
>>>>> existing layout components but if I create a via
>>>>>       
>>>>>           
>>>> and
>>>>     
>>>>         
>>>>> try to link it to it, it doesn't work.
>>>>>
>>>>> Regards.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>      
>>>>>       
>>>>>           
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