PCB Libraries Forum : Universal Grid System https://www.PCBLibraries.com/forum/ Tue, 21 Apr 2026 00:38:13 +0000 Mon, 19 Nov 2018 10:37:48 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=2404 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Universal Grid System : The round-off values for pad size...]]> https://www.PCBLibraries.com/forum/universal-grid-system_topic2404_post9892.html#9892 Author: Tom H
Subject: 2404
Posted: 19 Nov 2018 at 10:37am

The round-off values for pad size and spacing are located in "Preferences > Terminals > Settings".]]> Mon, 19 Nov 2018 10:37:48 +0000 https://www.PCBLibraries.com/forum/universal-grid-system_topic2404_post9892.html#9892 <![CDATA[Universal Grid System : The FPX file library contain...]]> https://www.PCBLibraries.com/forum/universal-grid-system_topic2404_post9885.html#9885 Author: Nick B
Subject: 2404
Posted: 17 Nov 2018 at 12:06pm

The FPX file library contain just the package dimensions, other settings for pad width length, width, shape and spacing are set in Preferences, which are all user-definable.]]> Sat, 17 Nov 2018 12:06:09 +0000 https://www.PCBLibraries.com/forum/universal-grid-system_topic2404_post9885.html#9885 <![CDATA[Universal Grid System : A few years ago, I read Mr. Hausherr’s...]]> https://www.PCBLibraries.com/forum/universal-grid-system_topic2404_post9884.html#9884 Author: rmozel
Subject: 2404
Posted: 17 Nov 2018 at 10:53am

A few years ago, I read Mr. Hausherr’s article about PCB design grid systems and found it very effective and beneficial. I am aware of the article itself is quite dated and these days 10um grid is more prevalent but 50um grid still proves useful for two thirds of my current designs.

I’m using 50um grid system down to 0402 (imp.) chip component sizes without issues but creating symmetrical and evenly dividable patterns for proper placement (including courtyard) requires a good deal of manual effort. When I use LE Pro (free edition) for this tasks, I sometimes find generated components are not suitable for the grid system even I forced some settings, i.e., pad and placement roundoff errors to +-0.05mm.

My question is about the creation of parts with LE that is “compliant” or usable with a 50um grid system. Is there a set of parameter settings definition that adjusts appropriate fields accordingly?

Regards.

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