[sdiy] Substitute for pin matrixes?

[ASSI]

On Sunday 24 January 2010, karl dalen wrote:
> Ah, i see, i misunderstood you, i thought you meant turned ones.
> I have been testing various leaf ones now and results are very
> diverse, anything from 10 times and breaking to over 150 but bent
> and rather bad contact dependeing on manufacturer, chinese low cost
> are worst! So im not to convinced about them either.

Either you really have absolutely crap ones or mine are much better 
(they are now more than ten years old, but they weren't anything 
special when I bought them, from Conrad I think).  What are you trying 
to plug into them?  Anything 1/8W should work OK, in fact I have a 
bunch that would have too thin wires on them.  Don't be cheap on the 
pliers to cut the wires with, they need to make a really clean cut 
(don't use them for anything else).  Otherwise you'd need to solder 
machined pins onto the resistors.

> I have the same experience so i went out to my storage to fetch one
> spare i had to see if it was possible to solder a cable to one of
> the metal lanes and it did.

Do you need to? Put an IDC pin header on a cable and plug that into 
the board.

> There are two kind of lab plates as i call them one with round hole
> and one with square hole, both takes round resistor legs, why its
> square i dont know but disassembled they both have two rounded
> leaf/tongue contactors.
[...]
> They are in stock ,new at most the regular suspects!

I'm talking about just the metal contact strips, sans the plastic.  
Haven't seen those in a while, but did not really do a search either.  
You can of course remove the strips from the lab plates and make a 
proper cross bar matrix out of them anyway.

> I had a look but could not find test system connectors?
> Everything looks very expensive there.

What do you expect from military, space and avionics?

> Whats a biro? All i got was a ballpoint pen?!

Yes, same thing, different name.


Achim.
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