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Home » CadSoft Support Forums » eagle.userchat.eng » Can't attach name or label to part pins
Can't attach name or label to part pins [message #161219] Wed, 03 June 2015 13:08 Go to next message
Logyx
Messages: 34
Registered: May 2015
Member
I'm editing a previously downloaded part but for some reason I can't
select the NAME tool and click on a pin or attach a bus/net label.
I can attach a wire, then a label, but if I click on the next pin it
only attaches it to the previous pin!
I believe the original part (before my editing) worked the same way, so
maybe it has something to do with the actual part which is a PCB
card-edge (connecting fingers for a slot-card) as there aren't any
connection pins on the part in the PCB section.
As far as I can see the schematic pins and the PCB section are connected
though... what am I doing wrong?
I'm using Eagle 7.3.0. on a Mac

L.
Re: Can't attach name or label to part pins [message #161231 is a reply to message #161219] Wed, 03 June 2015 23:45 Go to previous messageGo to next message
warrenbrayshaw
Messages: 1762
Registered: January 2010
Location: New Zealand
Senior Member
Your description is confusing as you talk of editing a part, which can only be done in a library, and in the same sentence you do things that can only be done in a Schematic.

I suggest you check you have used a grid size of 0.1 inch in both the library and the schematic. That is the accepted default and the only way you can connect to pins. Use the NET tool and not the WIRE tool when connecting to pins

HTH
Warren
Re: Can't attach name or label to part pins [message #161236 is a reply to message #161231] Thu, 04 June 2015 05:34 Go to previous messageGo to next message
Logyx
Messages: 34
Registered: May 2015
Member
On 04/06/2015 01:45, Warren Brayshaw wrote:
> Your description is confusing as you talk of editing a part, which can only
> be done in a library, and in the same sentence you do things that can only
> be done in a Schematic.

Sorry about the confusion.
I meant I couldn't connect a net label to the part while in the schematic.


> I suggest you check you have used a grid size of 0.1 inch in both the
> library and the schematic. That is the accepted default and the only way
> you can connect to pins. Use the NET tool and not the WIRE tool when
> connecting to pins

The grid size of the part and in the schematic is set to the default value.

Aha! I believe my problem arose because I just didn't understand how to
add labels the right way. I'm trying to join two 40 pin connectors
together without making a mess, which is why that would be useful.

So, I've figured out that I can't simply choose the LABEL tool and just
click on the pins but have to attach a WIRE or NET first, using those
tools. Also, I had forgotten to deselect the (not hightlight in green)
the pin I was previously working on before adding a new label.

What's the difference between those two tools? They seem to do the same
thing.
Re: Can't attach name or label to part pins [message #161251 is a reply to message #161236] Fri, 05 June 2015 11:39 Go to previous messageGo to next message
Rob Pearce
Messages: 481
Registered: September 2012
Senior Member
On 04/06/15 06:34, Logyx wrote:
>
> So, I've figured out that I can't simply choose the LABEL tool and just
> click on the pins but have to attach a WIRE or NET first, using those
> tools.

Correct. You can assign a name to a whole part, but not to a pin.
However, pins exist for connecting to nets, which you can then name.

>
> What's the difference between those two tools? They seem to do the same
> thing.

The WIRE tool is not intended for making electrical connections (yes,
it's a confusing name). It would be better called "LINE" because it
draws lines. It can be used on any layer for documentation purposes.

The NET tool is the one you should use to form electrical connections.
It has additional functionality, such as automatically stopping when you
click on a pin, and automatically adding junctions if you end on another
net.
Re: Can't attach name or label to part pins [message #161274 is a reply to message #161231] Sat, 06 June 2015 18:53 Go to previous messageGo to next message
Logyx
Messages: 34
Registered: May 2015
Member
On 04/06/2015 01:45, Warren Brayshaw wrote:

> I suggest you check you have used a grid size of 0.1 inch in both the
> library and the schematic. That is the accepted default and the only way
> you can connect to pins.

What should I do with metric parts?
I'm currently designing a card-edge connector part (something like this:
http://www.eurocircuits.com/blog/40-connectors) which of course won't
"snap" into an imperial grid.
What I've done when designing it is change the grid to mm, but it needs
to fit in together with the other components when designing a PCB.
Re: Can't attach name or label to part pins [message #161275 is a reply to message #161274] Sat, 06 June 2015 19:18 Go to previous message
Paul Romanyszyn
Messages: 857
Registered: December 2004
Senior Member
On 06/06/2015 02:53 PM, Logyx wrote:
> On 04/06/2015 01:45, Warren Brayshaw wrote:
>
>> I suggest you check you have used a grid size of 0.1 inch in both the
>> library and the schematic. That is the accepted default and the only way
>> you can connect to pins.
>
> What should I do with metric parts?
> I'm currently designing a card-edge connector part (something like this:
> http://www.eurocircuits.com/blog/40-connectors) which of course won't
> "snap" into an imperial grid.
> What I've done when designing it is change the grid to mm, but it needs
> to fit in together with the other components when designing a PCB.
>
To clarify.
Lib symbol and schematic are 0.1" grid. Layout and pads are set to the
data sheet.
When routing having your grid in layout just small enough so the metric
and non metric pads are almost on your grid.
Paul R
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