sounds reasonable. I'm looking right now at an LCD display that has
the wires inserted through the holes. This makes a good mechanical
connection.
I can proto with what you are suggesting. But I have an eye towards
building a number of them - 50-100 initially - so I need to
understand how it would get done in a manufacturing environment.
mechanical strength is important and maybe epoxy or some such
adhesive would work but I'd really prefer to avoid that step.
By the way, Eagle's DRC really doesn't like putting pads next to
board edges. I'm ignoring it for now but will have to figure that
out.
--- In
Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> I have soldered the wires directly to "strips" of copper.
> (like a edge connector)
> Holes would be tiny, or offset, and the wire is not solid and hard
to
> insert.
>
> The strip pads are possible with a small enough pitch (same as
cable)
>
> You should add some mech. restraint, maybe glue.
>
> worked fine for me.
>
> ST
>
> On Fri, 02 Apr 2004 23:01:08 -0000, Phil <phil1960us@y...> wrote:
>
> > I've seen this done and was wondering if anyone has some words of
> > wisdom as to how to do it. Basically, I want to attach a ribbon
> > cable directly to a PCB. The non-PCB end will use an IDC
connector
> > but I can't afford the size of header pins on the PCB. I've seen
> > several LCDs that have 50 mil spacing hole/pads. The insulation
was
> > stripped of the ribbon cable, the wires inserted in the holes and
> > soldered. The solder is about 1 mm high. I need 2-3 mm
clearance so
> > that works for me. Clearance on the bottom is a little less a
> > problem but even SMT connectors are too big.
> >
> > Are there special tools for this? It sure looks tricky to do.
What
> > size holes/pads?
> >
> > Phil
> >
> >
> >
> > Be sure to visit the group home and check for new Bookmarks and
files:
> > http://groups.yahoo.com/group/Homebrew_PCBs
> > Yahoo! Groups Links
> >
> >
> >
> >
> >