I am working on a 2 layer board. Should I be using a ground
plane, and if so how do I add it and perform auto routing?
On Tue, 23 Dec 2008 15:19:59 -0000, <basicbrd@noreply.co.uk> wrote:
I am working on a 2 layer board. Should I be using a groundplane, and if so how do I add it and perform auto routing?
Use the POLYGON command to create a copper pour. This can be almost
any shape you can think of. IOW, it doesn't need to be a rectangle.
Then use the NAME command to name the polygon GND.
Note: The default line width of 16 mil (0.016") usually works well.
However, if you have gaps in the pour, say between pads, then decrease
the line width. If you make the line width too narrow, you will
create a huge Gerber file.
-Dave Pollum
Hello, thank you for your reply, I am trying to understand this,
can you clarify some points,
what is a "copper pour" , is it on eagle 4 or 5?
do I add the ground layer around my components or over the entire area?
can I perform routing on the ground plane as well or only on the other
layer?
if yes, how do I route over the ground, as the routes need to cut space
around them?
tia.
--
"Dave" <dave@x.com> wrote in message
news:0822l45msfhqis4vba9cnooefpmgd5p9t2@4ax.com...
On Tue, 23 Dec 2008 15:19:59 -0000, <basicbrd@noreply.co.uk> wrote: >I am working on a 2 layer board. Should I be using a ground>plane, and if so how do I add it and perform auto routing?
>I am working on a 2 layer board. Should I be using a ground
>plane, and if so how do I add it and perform auto routing?
Use the POLYGON command to create a copper pour. This can be almostany shape you can think of. IOW, it doesn't need to be a rectangle.Then use the NAME command to name the polygon GND.Note: The default line width of 16 mil (0.016") usually works well.However, if you have gaps in the pour, say between pads, then decreasethe line width. If you make the line width too narrow, you willcreate a huge Gerber file. -Dave Pollum
Hello, thank you for your reply, I am trying to understand this,can you clarify some points, what is a "copper pour" , is it on eagle 4 or 5?do I add the ground layer around my components or over the entire area?can I perform routing on the ground plane as well or only on the otherlayer?if yes, how do I route over the ground, as the routes need to cut spacearound them?tia.--
Groundplanes aka. copper pours work in all Eagle versions,
one way to make one is to type 'polygon gnd' and draw the outer edges of the groundplane to be.
Before drawing you may also select stuff like width, hatch or solid, via thermals on/off etc.
You can put groundplanes where you see fit, around the entire board or just in selected areas.
When you then click ratsnest the pour is drawn, and automatically avoids routed tracks,
and 'isolate' sets the isolation distance between tracks and pour.
//Greg-
You can route on the plane too after it is "poured". As long as isolate is
set, clicking ratsnest again will redraw the plane with proper spacing
between the route and the rest of the plane.
<basicbrd@noreply.co.uk> wrote in message
news:gj5dsn$uav$1@cheetah.cadsoft.de...
Hello, thank you for your reply, I am trying to understand this,can you clarify some points, what is a "copper pour" , is it on eagle 4 or 5?do I add the ground layer around my components or over the entire area?can I perform routing on the ground plane as well or only on the otherlayer?if yes, how do I route over the ground, as the routes need to cut spacearound them?tia.--"Dave" <dave@x.com> wrote in messagenews:0822l45msfhqis4vba9cnooefpmgd5p9t2@4ax.com...
Groundplanes aka. copper pours work in all Eagle versions,one way to make one is to type 'polygon gnd' and draw the outer edges of
one way to make one is to type 'polygon gnd' and draw the outer edges of
the groundplane to be.
Before drawing you may also select stuff like width, hatch or solid, via
thermals on/off etc.
You can put groundplanes where you see fit, around the entire board or
just in selected areas.
When you then click ratsnest the pour is drawn, and automatically avoids
routed tracks,
Well, I have just tried what you said and I can see you are right about
this.
Is this also explained in the eagle tutorial, or elsewhere?
