Disconnecting a part from nets during MOVE

if the pins are at the same swap level, pinswap them and then rotate or

mirror the component. surprisingly the passives usually have the

pins at swap level 1 which makes this possible, but polarized passives

also have the pins at swap level 1, so watch out !!@!

Thanks Gary,

That works like a champ for the rotate and mirror.  This is a new concept

for a 10 year veteran of Orcad.

It does not work so well for say a 20 pin header.  In this case, the

ability to cut the part and paste it elsewhere so that I could

rotate/mirror then reattach would be so much easier.

Thanks for giving me one more tool of understanding.

I find it interesting that the CUT command does not cut but copy????

Does anyone know of a ULP that truly will cut and paste like in windows?

Sean

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seank wrote on Mon, 14 December 2009 23:26

In this case, the ability to cut the part and paste it elsewhere so

that I could rotate/mirror then reattach would be so much easier.

If that's all you want, just delete the part and add it somewhere else.

Deleting a part tends to break all connections to it.

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Olin,

While that can be done, it requires the user to go back through the

library....which is tedious.  And depending on how many libraries you have,

time consuming.

I did figure a way to do it this morning.  Not too difficult to put as a

series of commands.

1.  GROUP what you want to cut.

2.  CUT the group to put it in the buffer.

3.  DELETE the group

4.  PASTE the group

All the reference designators will remain the same so you can do whatever

one wants to the group without having nets move around.

Hope this helps others.  Now the fun of this newbie trying to figure out

how to assign this to a hotkey.  Any ideas from any guru?

Sean

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seank wrote on Tue, 15 December 2009 07:51

Now the fun of this newbie trying to figure out how to assign this to a

hotkey.

That is a dangerous and rare enough operation I wouldn't want it on a hot

key.

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my usual way to move something is to duplicate it with copy, drop it

where I need it, delete the original, rewire the schematic. if it's only

  a few connections, i move it and clean up the mess.

as far as changing connections on a header, i suppose you find one

that's backwards ( now, how many times have i done that?? )...

you can do the same thing if the header was defined with the pins at the

same swap level in the library. in this case it's probably easier and

safer to copy, delete and reconnect, and probably faster as well.

making a header pinswappable might lead to an error some day if you're

careless and swap something you shouldn't... but it might also be a good

exercise to learn more about EAGLE.

Thanks Gary,

In version 5.6, which I am running, if I paste before I delete the

reference designators get changed.  That would defeat the true idea of

disconnecting the group for the purpose of just moving or rotating and then

reattaching.  If I am doing a board revision, I may want to change the look

of the schematic for my purposes, but not the look/feel of the PCB for

production purposes.

Appreciate the help very much.  It is nice to know that this forum actually

works.

Sean

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seank wrote on Wed, 16 December 2009 07:23

That would defeat the true idea of disconnecting the group for the

purpose of just moving or rotating and then reattaching.

It may be helpful to disconnect a large part by defining a group as a

narrow region just outside the part's pins, then delete the group.  This

should have the effect of deleting the nets immediately connected to the

part.  You may have to do this once for each side of the part that has

connected pins.

Keep in mind that groups aren't restricted to being defined by rectangles.

You can specify a arbitrary polygon with successive left clicks, then one

right click to close the polygon and end the group definition.

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actually, I lied, I never have the forethought to do what i suggested, i

do like Olin said: i disconnect the part, fiddle with it and reconnect

it. i don't even bother to use his grouping method, i just delete the

net segments and reconnect them.