On Saturday 03 March 2007 10:57:39 YD wrote:
> If you really, really, must have them on the BOM
> you'll need to create them as special symbols in the
> schematic and corresponding foot-prints in the
> lay-out. The couple of times I needed this I made
them
> as zero-ohm resistors with a 400 mil foot-print. For
a
> configurable board I made a jumper symbol with a 100
> mil fp.
>
> As others have mentioned, the usual way is to make a
> double-sided board making sure the top-side tracks
are
> all straight lines[1]. Length can be variable as
> needed. Be sure to check the via size. Won't show up
> on the BOM but after assembly any empty holes will be
> quite conspicuous. You can always draw a line between
> them on the silk-screen.
>
> [1] Not necessarily. I have seen boards with diagonal
> and wiggly jumpers, sometimes under it. May be bad
> form, but hey, if it works...
>
> - YD.
This is the correct way to do it!
The main reason is that you can make the modules with biiiig
pads and drill
holes.
Pissing about with changing pads on a layer is just bad
practice!
This way, you can use the BOM to verify the presence of all
pads.
//Dan
--
Dan Andersson, M0DFI
dan andersson.co.uk
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