kicad-developers team mailing list archive

[Lorenzo Marcantonio <l.marcantonio@xxxxxxxxxxxxx>]

On Tue, Jun 14, 2016 at 01:53:09PM +1000, Cirilo Bernardo wrote:
> Hi folks,
> 
>  Some assembly houses prefer to have a Pad1 location in addition
> to the part centroid location; this makes the orientation of the
> component unambiguous and can help in cases where the user's
> footprint doesn't align with the tape orientation of a component.
> Would this be a useful addition to the placement file or are there
> any objections to it?

IIRC the 'pad 1' position was already requested in the past. Of course
*in addition* to the centroid.

The real issue is determining *which* is the pad 1! from 'easy' case
like alu capacitors (is 1 the positive?), diodes (but then there is no
single convention, 1 is A o K?) to some rather esoteric ones (partially
populated BGA, pin 1 is maybe A2). The correct way to handle this would
be to simply add an attribute to the pretty schema saying the identity
of pin 1...

-- 
Lorenzo Marcantonio
CZ Srl - Parma

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