custom pcb

Hi Willie,

As far as I am aware you can do this with the cadsoft eagle package provided by element14.

Willie Miner wrote:

Can you just design a pcb with holes only where you want them and with no component and wiring layout?  I just want to design a custom board.  Im placing the holes where I know my components will be at on the custom board.

 

Use vias for the holes, and it should work fine.

Am 26.10.2011 18:55, schrieb Willie Miner:

Can you just design a pcb with holes only where you want them and with no component and wiring layout?  I just want to design a custom board.  Im placing the holes where I know my components will be at on the custom board.

 

You have the options to use Vias (drillings with copper ring around

it) or Holes (used for mounting holes for example) and place it at

any location.

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Mit freundlichen Gruessen / Best regards

Richard Hammerl

  CadSoft Support -- hotline@cadsoft.de

  FAQ: http://www.cadsoft.de/training/faq/

thank you

How can you add holes to a board?

I always get a Warning about back-annotation not allowing it, and Eagle

refuses to ADD.

We have had to add random mounting holes to the schematics, which is STUPID!

In our experience, only large vias can be added to be used as mounting

holes when laying out a board, or having the designer add mounting hole

parts to the schematic.

~Marvin

Richard Hammerl wrote:

Am 26.10.2011 18:55, schrieb Willie Miner:

>> Can you just design a pcb with holes only where you want them and with

>> no component and wiring layout? I just want to design a custom board.

>> Im placing the holes where I know my components will be at on the

>> custom board.

>>

>

You have the options to use Vias (drillings with copper ring around

it) or Holes (used for mounting holes for example) and place it at

any location.

 

On 10/27/2011 3:51 PM, Marvin Dawson wrote:

How can you add holes to a board?

I always get a Warning about back-annotation not allowing it, and Eagle

refuses to ADD.

We have had to add random mounting holes to the schematics, which is

STUPID!

In our experience, only large vias can be added to be used as mounting

holes when laying out a board, or having the designer add mounting hole

parts to the schematic.

~Marvin

 

Eagle will refuse to add a pad, but will allow a hole to be added.

Are you sure that you selected hole and not pad?

Doug wrote:

On 10/27/2011 3:51 PM, Marvin Dawson wrote:

>> How can you add holes to a board?

>> I always get a Warning about back-annotation not allowing it, and

>> Eagle refuses to ADD.

>> We have had to add random mounting holes to the schematics, which is

>> STUPID!

>> In our experience, only large vias can be added to be used as

>> mounting holes when laying out a board, or having the designer add

>> mounting hole parts to the schematic.

>> ~Marvin

>>

>

Eagle will refuse to add a pad, but will allow a hole to be added.

Are you sure that you selected hole and not pad?

Hmmm!  A few incorrect  words causing confusion.

When in the board editor you can place a HOLE or a VIA. You cannot place a

PAD. That action is limited to the library editor when building a package.

The via icon looks like a pad but if you hover the mouse over it the tool

tip says "Via".

Vias are plated through and holes are generally not.

You can add a VIA or a HOLE to a board at any time. This applies to a

consistant schematic/board pair or a Board only design.

Here I'm talking of adding a HOLE using the 'hole' icon or command in the

board editor, not ADDing a hole from the hole library. If you attempt that

you will get the back-annotation warning.

You can ADD a hole from the hole library if the package there does not

contain a pad. The presence of a pad implies a device exists for this

package and hence a device must be added to the schematic and not just a

package to the board..

How you add a mounting hole to your board design depends on your design

requirements and will be done as a VIA , HOLE or library part.

HTH

Warren

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Marvin Dawson wrote on Thu, 27 October 2011 18:51

We have had to add random mounting holes to the schematics, which is

STUPID!

Eagle isn't stupid.  What is stupid is people ranting about it without

having read the documentation.

You can add mounting holes directly to a board with the HOLE command.  You

can even make more complex things, put them in a package in a library, then

add the package to a board directly multiple times.  For example, I have

pre-made packages for #4-40 mouting holes.  These include the hole and

associated keepout areas.

If on the other hand you want holes that are actually electrically

connected to specific nets in the schematic, then of course these should be

added to the schematic since they are part of the circuit.  You can make

devices for these with all the details you want once, then add those

devices multiple times to the schematic.  Then when you do the board, the

mechanical part of these connection points will show up for you to place.

This all makes sense when you stop and think about it.

Quote:

In our experience, only large vias can be added to be used as mounting

 

holes when laying out a board, or having the designer add mounting hole

 

parts to the schematic.

Then your experience is limited and you need to read the documentation.

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