On Wed, 26 Apr 2023 13:40:24 +0200
"Axel Rau" <Axel.Rau@...> wrote:
How exactly I get the zero point of a footprint?
Both boards have different dimensions, but I try to define a common point of reference.
open the footprint in the footprint editor
The crosshairs are the zero or placement point.
i.e where you click on the that will be where the module is placed
around.
It's usually in the centre of smd components as that;'s where the pick
and place machines like to grab, but for things like pin connectors it's
often centred on pin 1
The board dimensions don't matter it's where in the grid things go that
is important.
If you find keeping track of the positions a bit awkward - and it can
be -
Shove a pad down somewhere known, even if way off the board say at
x,y, 500,500 on both layouts and LOCK it. Then set down your connectors on
each board FIRST relative to that pad use the move relative option in the
move command. Then LOCK the connectors in place
You can then lay out the boards around the connectors. Once you are
happy, just remove the lock on the pad and delete it.
It's a good idea to add a not on the circuit diagram or layout as to where
the pad was, just in case you need to make mods later.
Dropping temp pads on the layout is a trick I use often especially for
drawing boundaries and so on. i.e. if I want a board 100x45mm then I drop
4 pads positioned relative to each other, then it's just a matter of
"joining the dots" with the line tool it's often quicker than fiddling
with the x y and lengths in the line properties.
Andy
