Editing a part in eagle

[signalflow]

I can get around editing parts fairly easy, but I'm kinda stuck on one right now.  I'm editing a Potentiometer that I want to have both footprints for alpha and omeg for the second deck.  The issue I'm having right now is that when I add the pins I end up with 2 sets, one for the "A" deck and one for the "B" deck, so that's 6 pins total for 3 pads, eagle doesn't like that.

How do I only get them on the "B" deck?  The footprint places the "A" deck first and the "B" deck second in the schematic editor.

Can anyone help?  Hopefully I didn't talk in too many circles and my point comes across.

Thank you,

-Casey

 

[abbey road d enfer]

I had the same problem with multi-size caps; I ended up creating caps with 3, 4 or even 5 pads that must be connected in the schematic; of course it requires a specific symbol.

 

[signalflow]

I guess the easiest thing to do would be to edit a 3 deck part and just have a crappy looking schematic   Well, a second schematic could be edited to look good.......lame.

It would be nice to at least edit the symbol for the 3rd deck and have each pin able to invoke.  Any ideas How to achieve this?

Abbey,  I messed around with that the other day.  You could just give your pins the shortest length and evenly place them on the side of the symbol they refer to.  *--*--*--*--*--||----*  Just a thought.

-Casey

 

[abbey road d enfer]

Abbey,  I messed around with that the other day.  You could just give your pins the shortest length and evenly place them on the side of the symbol they refer to.  *--*--*--*--*--||----*  Just a thought.

-Casey

That's exactly what I did. Works fine.

 

[mitsos]

It's not really clear what you're trying to do.. you want to be able to use either of 2 dual pots on a PCB? You say you only need the Alpha pads on the second gang and I don't understand why you wouldn't want them on the front, but no matter.. If you have the gangs separate in the schematic (like you said Eagle places A then B), then why not place them, and then delete A?  I've done this for 2x6 grayhill switches where I only needed a 1x6. hope that helps.

 

[volker]

It would be nice to at least edit the symbol for the 3rd deck and have each pin able to invoke.  Any ideas How to achieve this?

Just make a single pin as one gate, and mark it as "Add=Request".


You can take a look at the "capacitor-wima.lbr" to see how they solved the problem. But I don't really like it, that way you always have an additional junction dot in the schematic where there shouldn't be one.

What I usually do for caps, since I rarely need it, is place a via on the board of the according size, and then rename it to the net it is supposed to connect to. It's ok when you need an additional pad that is directly on the grid, not so nice when you have to create more arbitrary footprints.

 

[signalflow]

It's not really clear what you're trying to do.. you want to be able to use either of 2 dual pots on a PCB? You say you only need the Alpha pads on the second gang and I don't understand why you wouldn't want them on the front, but no matter.. If you have the gangs separate in the schematic (like you said Eagle places A then B), then why not place them, and then delete A?  I've done this for 2x6 grayhill switches where I only needed a 1x6. hope that helps.

The second deck of a 16mm Alpha and a 16mm Omeg are different in depth(that's the word I should have used).  The pin spacing is the same for all.  I want to be able to have the first deck stay the same and the second deck have the extra pins, or at least be able to edit a symbol of a 3 deck part and only have the extra pins on the 3rd symbol.  That last part may be a little confusing.

Volker, I'll give that a try.

-Casey

 

[mitsos]

Ah! now I got it... well, I think either way described above should work OK. Personally I use the capacitor method you and Abbey described all the time.