Aligning D-Sub Pins

Alex wrote:

Hello!

 

I am trying to precisely align a d-sub 25 connector on a PCB

according to a technical drawing provided by a company. In the

drawing the part is aligned based on the top left pin in the d-sub

assembly.

 

My problem is that the coordinate locus for the dsub connector in

EAGLE is in the center of the part, with dimensions to the top left

pin arbitrarily defined. I am attempting to match/ move the entire

pin assembly such that the top left pin is the coordinate locus for

the entire part.

A couple of hints.

The responders have all suggested using the current library part, finding

the offset of pin1 relative to the part's origin and offsetting the part by

this much so the part ends up with the pin1 in the correct place.

Verify the placement using MARK. You can measure back to the point the

company provided as the reference point.

Alternatively you make a device variant that has the origin on pin1

Create a copy of the library package. GROUP and move all the package content

so pin1 ends up at the origin point. This a new package which you use to

create a variant within the device.

HTH

Warren

Warren, this is exactly what I want to do. How can I group and move the

entire pinset such that the top left pin is at exactly the origin?

For being a precision tool, EAGLE sure makes it difficult to decide exactly

how to place that origin...

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On 4/5/2011 3:27 PM, Alex wrote:

Warren, this is exactly what I want to do. How can I group and move the

entire pinset such that the top left pin is at exactly the origin?

 

For being a precision tool, EAGLE sure makes it difficult to decide exactly

how to place that origin...

I would:

   grid finest

   show all layers

   group all elements of drawing

     click move button

     right click the new origin pin

     type (0 0) into command line and hit enter.

fix layers

grid last

This almost worked, it was off by about 1.5mils from the origin of the

part. You have to be sure right click at the exact center of the new

origin pin, by zooming, to get it better.

On 4/5/2011 3:27 PM, Alex wrote:

Warren, this is exactly what I want to do. How can I group and move the

entire pinset such that the top left pin is at exactly the origin?

 

For being a precision tool, EAGLE sure makes it difficult to decide exactly

how to place that origin...

I would:

   grid finest

   show all layers

   group all elements of drawing

     click move button

     right click the new origin pin

     type (0 0) into command line and hit enter.

fix layers

grid last

This almost worked, it was off by about 1.5mils from the origin of the

part. You have to be sure right click at the exact center of the new

origin pin, by zooming, to get it better.