Grid Offset

On 02/21/2013 09:49 AM, Andreas Weidner wrote:

Am 21.02.2013 14:12, schrieb Chuck Huber:

For exact placement of parts, I always use the command line.

 

Yes. I'm a BIG fan of the command line (it's ONE reason why I use

EAGLE and not some other software).

 

BUT you still have to calculate things like "horizontal three times

3.75mm, wait a moment, errrrrm, and vertical five times 0.15inch." Of

course it is possible, but with a nice grid that would be much easier.

I have often had to do a step-and-repeat kind of placement.  LED's,

resistors, etc..

It's worth noting that coordinates on the command line do not have to be

of the same unit, or even the grid unit.

    MARK (3.75mm 0.15in);

It's also worth noting that you can move the mark relative to its own

position.  So I set the mark at the start point, place the component

relative to the mark, then step the mark.  It gets pretty easy using

relative positions and the up-arrow for command history.

    MARK (12 12);

    MOVE R1 (R0 0);

    MARK (R3.75mm 0.15in);

    MOVE R2 (0 0);

Now I can up-arrow twice to repeat the relative movement of the mark,

and move the next component.

So there's your good old fashioned, home grown, red-blooded, all

American, mixed-unit coordinate step and repeat.

HTH,

    - Chuck

I would very much like to second that.

Most component and mechanical drawings are dimentioned with relational mesurements.

I finde my self sitting with my 1987 HP42S RPN calculator all the time witch in stupid since

i am sitting infront of a xxx gigiflops computer...

It is not called "computer aided design" for nothing

For me it would be sufficiant if the mark command could be extended by being offset for the "alt" grid when

eg CTRL and ALT key is pressed to be able to place, route and so on in this cordinate system.

Keep up the good work.

Asbjørn Holland Chrsitensen

Musalk

Eagle user for 10 years

This is a huge problem for me. Here's the scenario: I have placed and routed a 1136-pin BGA with a .65mm ball pitch. Somehow, years later, when I return to the layout, the part is not on grid and none of the escape traces are either. The whole routing scheme is predicated on the grid. Without it, it's extremely difficult to add anything. In this case, I need to add something to a new pin. The only thing I can thing to do is to grab THE ENTIRE DESIGN INCLUDING ALL LAYERS and scoot them over by some weird amount (0.31456mm or something). This is very inconvenient.

On 23.10.2020 16:22, Stephen Hicks wrote:

This is a huge problem for me. Here's the scenario: I have placed and routed a 1136-pin BGA with a .65mm ball pitch. Somehow, years later, when I return to the layout, the part is not on grid and none of the escape traces are either. The whole routing scheme is predicated on the grid. Without it, it's extremely difficult to add anything. In this case, I need to add something to a new pin. The only thing I can thing to do is to grab THE ENTIRE DESIGN INCLUDING ALL LAYERS and scoot them over by some weird amount (0.31456mm or something). This is very inconvenient.

You know you can move everything in a couple of commands?

     DISPLAY ALL

     GROUP ALL

     MOVE (>c0 0) (your offset)

     DISPLAY LAST