Homebrew PCBs

yup, pretty much what Jeremy said.  dont use busses.  go ahead and 
delete the busses you made.

nets can be a bit tricky to actually get connected.  Run the ERC 
(engineering? rule check) to see if you have any unconnected 
pins/nets.  Its easy to actually not make the connection.  erc will 
tell you if you have any.

when you switch to board view, you will see all your components 
sitting outside the board outline.  You'll have to move them inside 
the outline before you can do anything.

In general, I only use autorouting to get a sense of how good my 
component placement is. The autorouter is kind of stupid and will 
often rout the worst possible net first so you need to give it a lot 
of guidance. I'll autorout, ripup, move components, try it again 
until I can get pretty far.  Then I ripup all and start manually 
routing.  It may take some time but you will start getting a sense of 
the best placement and rotation of a device.  

When you are done with routing, you really aren't done.  You will 
need to run DRC (design rule checking) to ensure that your component 
placement and routing is good.  dont be dismayed if you get a lot of 
DRC errors.

--- In Homebrew_PCBs@yahoogroups.com, "Jeremy Taylor" <jeremy@e...> 
wrote:
> You have to place the components on the board, then run the 
autorouter. It will not place components for you, thus it can not 
autoroute till you do so. It will put all the components that you use 
in your schematic, on the board page, but they will all be off to the 
side grouped together, yet connected by the air wires you specified 
in the schematic. .
> I find it very useful to name all related components and name the 
nets in the schematic so it's easier to tell which resistor goes with 
which cap when you start laying out the board.
> I never use "buses"  in the software, I just use airwires, that get 
called nets. IMO a trace is a trace whether it be a bus or a net. 
> 
> http://www.soundclick.com/jtsound
>   ----- Original Message ----- 
>   From: teilhardo 
>   To: Homebrew_PCBs@yahoogroups.com 
>   Sent: Sunday, May 16, 2004 11:03 PM
>   Subject: [Homebrew_PCBs] Re: New to group and first attempt at PCB
> 
> 
>   So, if I put nets together with my components, and then switch to
>   layout editor, isn't the program supposed to logically come up 
with a
>   layout?
>   In my schematic, I connected the components together using these
>   "buses" and then some pop up error came up and said that they 
need to
>   be connected using nets.  So I put the nets on top of the busses, 
is
>   this right?  Or do I only need nets OR busses?
>   Thanks,
>   Tei
>   --- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> 
wrote:
>   > a net in eagle is a number of pins that are electically 
connected 
>   > together - kind of the way you would logically think of it.  It 
has a 
>   > name.  You dont have to actually draw them as connected.  Any 
nets 
>   > you name Gnd, for example, will be connected together.   This 
is 
>   > great for doing a schematic with out making a wiring mess in 
the 
>   > drawing.  I use it all the time.  
>   > 
>   > A bus is a set of parallel nets with a common name, say "Bus", 
and 
>   > each net has a sub name - Bus1, Bus2, Bus3...  Its used mainly 
for, 
>   > shock!, creating busses and keeping them tidy on the schematic.
>   > 
>   > --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" 
>   > <leon_heller@h...> wrote:
>   > > ----- Original Message ----- 
>   > > From: "teilhardo" <teilhardo@y...>
>   > > To: <Homebrew_PCBs@yahoogroups.com>
>   > > Sent: Sunday, May 16, 2004 9:38 PM
>   > > Subject: [Homebrew_PCBs] Re: New to group and first attempt 
at PCB
>   > > 
>   > > 
>   > > > Eagle has some nice ULP's but it is sort of awkward.  Does 
anyone 
>   > know
>   > > > the difference between a "bus" and a "net"?  
>   > > 
>   > > With the Pulsonix software I use, a bus contains several nets.
>   > > 
>   > > Leon
>   > > --
>   > > Leon Heller, G1HSM
>   > > http://www.geocities.com/leon_heller
> 
> 
> 
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