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Re: eeschema grid size


Le 20/08/2012 20:28, Lorenzo Marcantonio a écrit :
Is there a reason for eeschema to only have imperial grids? (probably
because internally works in mils?)

There are people which would like to work in metric in eeschema, too
(with custom libs, obviously)


For a schematic tool, the grid size has not really a meaning.
It just define roughly the size of graphic elements for printing (like a zoom factor).

One can consider a 2.54 mm (0.1 inch) grid size is the same as 2.5 mm metric grid.
the 1% size error has no meaning for a schematic.

The next Eeschema generation (I hope) will know only a grid that define the position of pins
(and items that can be connected: labels, wires ... )
The actual size (in mm, inch or parsec if you prefer) will be an user choice that define
the size of items when printing ( a zoom factor if you prefer )

The "standard" grid pin size is currently 50 mils or 1.27 mm.
( users who want metric units can read 1.25 mm, the pitch of a 10mm screw, in ISO metric units ).

The actual size when printed depends on paper size, margins...

A schematic is not a PCB.

Jean-Pierre CHARRAS

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