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Comparing packages [message #167271] Sat, 24 September 2016 08:24 Go to next message
Messages: 186
Registered: September 2011
Location: Cincinnati
Senior Member
Is there a command, or ULP that will compare and highlight any differences between two packages (kind of like comparing 2 word documents). For example, say you have a 2N1234 in a SOT23 & a 2N3456 in SOT23. Though they are both called out for SOT23, they might have very slightly different packages, or perhaps all of the dimensions are exactly the same. A comparison would verify or highlight any differences (either graphically or by list). This is where Eagle can provide a headache, since the same-named packages can be "mismatched" with other packages having the same name.

As an aside, rather than have 30 "different" packages named sot23, it would be nice to uniquely name them , perhaps, sot23aa, sot23bb..then no confusing one package with another (due to sharing the exact same name). Of course sot23 is pretty generic, but other types might be less forgiving.
Re: Comparing packages [message #167316 is a reply to message #167271] Tue, 27 September 2016 18:45 Go to previous message
Messages: 69
Registered: March 2007
There's an ulp that does something similar.
It can't compare/diff packages between libraries but it can do a diff between devices
(including symbols and packages) inside a schematic and the libraries: Eagle library checker
It shouldn't be too hard to adopt it for your purpose.

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