"disable" or "comment out" components

often asked for in CAD packages, seldom provided...

i just drag them off the board...

Gary Gofstein wrote:

often asked for in CAD packages, seldom provided...

i just drag them off the board...

Thanks, but that really doesn't work for what I'm hoping to do.  I

usually do the same thing, to tell you the truth.

I have a rather complicated schematic, and I want to layout and route

each section separately.

Etharooni schrieb:

I have a rather complicated schematic, and I want to layout and route

each section separately.

Then do so: drag the parts of one section aside and layout them. Repeat

that for each section. Finally put everything together. Hopefully it

will fit without too much trouble...

Tilmann

yeah...we know it doesn't work, the comment was more directed to CADSOFT

than to you.

It would be nice if not every symbol had to have a package associated

with it. schematics are used to document more than just a board layout.

As I said, it's often asked for, seldom provided. For a hierarchy

deficient tool like EAGLE, it's practically a necessity (IMNSHO).

Gary Gofstein schrieb:

It would be nice if not every symbol had to have a package associated

with it. schematics are used to document more than just a board layout.

It's no problem to do exactly this.

However, as soon as a symbol is connected to a package (and its pads),

the device must of course be present in the board, too. If it weren't,

you would surely complain about missing annotation...

If you want additional documentation in the schematic, just draw it

there - but don't use devices with packages for that.

As I said, it's often asked for, seldom provided. For a hierarchy

deficient tool like EAGLE, it's practically a necessity (IMNSHO).

That's nonsense (IMANSHO).

EAGLE lacks support of hierarchical design, but that's not related to

the issue discussed here. Hierarchical design applies to the schematic,

to make it more structured and readable. The board, however, must always

contain the /complete/ circuit, and you must of course be free to place

every part wherever you want.

---

To the OP: For grouping the parts of a circuit section in the board

before starting exact placement and routing, it is very helpful to know

the parts names (make a printout of the schematic if you don't use dual

screens) and pick the parts by their names. Just activate the MOVE

command and then enter the part names directly by keyboard. After having

placed a part, you can just enter the next part name. This makes first

placement very fast and comfortable.

Tilmann

are you saying it is possible to add the symbol to the schematic without

adding a containing device?

to clarify the issue of hierarchy and package-less components:

i ( and others) often suggest the possibility of an "off-board" package

or other mechanism in order to document components that are not to be

board-mounted on the schematic.

the usual response to this is that these devices should be included on a

higher level drawing.

and yes, my reason for suggesting this is not the same as the OP's

request and this would not help him. i did not read his post very

carefully, except for the title.

Gary Gofstein wrote:

are you saying it is possible to add the symbol to the schematic without

adding a containing device?

 

See the frames lib.

Paul R.

ahh, but there are no pins on the frames.

i already knew about and use that.

Etharooni wrote:

Is there a way to "comment out" or disable certain parts in eagle, so

they would still appear in the schematic, but not on the board?

Thanks everybody for their input.  There are definitely ways of kinda

doing it, like that frames library (which I haven't heard of until now.)

but it's still not exactly what I was looking for.

Even though each section is connected to the rest of the circuit, it

would be nice to disable and re-enable components for easier laying out

and routing.  What I ended up doing in the particular board I was

working on, was make every schematic 'section' a different eagle file,

and then import and route the other sections one by one.

So, Cadsoft: I've got a feature request for you.  Maybe we can see this

ability in future versions...  How 'bout it?  Maybe?

Etharooni wrote on Thu, 13 August 2009 21:48

Even though each section is connected to the rest of the circuit, it would be nice to disable and re-enable components for easier laying out and routing.  What I ended up doing in the particular board I was working on, was make every schematic 'section' a different eagle file, and then import and route the other sections one by one.

@Etharooni,

maybe this is a solution.

Make a new layer in schematics and name it 'routed'. If you routed a block of your schematics, you put a frame (in this new layer) around this block. So you won't loose overview what's routed and what's not.

Don't you make the placement of componets on your board before you start routing?

I fear if you "comment out" a component ERC would be affected and this would not be good

It might also be, that I didn't understand your problem right.

Johannes Kotz

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