[PCB_FORUM] Re: radial or polar pin placement

Hello Randy,

probe cards.. yes we do.
Let me understand: you not have instruments around the board but pads all around? A collegue of me has done this with a "excell type" (Excell or Openoffice do the job) sheet to calculate coordonates without cumulative errors. 
With the result, he build a script to place pads.

Have a look in this direction.

Jean-Charles

Randy Dawson a écrit :

Hi all,

Perhaps there are some of you also doing probe cards...

How do you place a radial array of pins in a symbol?
The system provides a radial copy, with a count and increment. of course this wont work, due to accumulated error of the incremental method. What I am looking for, is a function similar to autocad's radial array, where you give it the pin count (140 in my case) and the angle to fill, (360).
This places the objects evenly around the circle of a given diameter. 
How do you guys do it?
It would be a great feature to add to Allegro, along with the capability for a polar grid. 

Thanks,

Randy

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