On 01/10/2011 04:53 AM, Andrew Leech wrote:
Hah, I am the hw engineer (as well) and I crimp most of my cables with
my trusty long nose pliers. I don't have much in the way of fancy
crimping tools, but haven't ever really needed them (they do a nice
job though when you can get them). I must say though if I want my
cables to last a little longer I'll but a dab of solder in the crimp
as well.
A good crimp tool uses so much pressure that you get a gas-tight
connection between wire and crimp contact, which will not corrode and
last as long as a good solder joint.
However, such tools tend to be quite expensive. If you don't have them,
soldering is more reliable.
On a more useful front, for 0.1" pitch connectors, the most flexible
option is individual labelled pins on each line, like what altium have
done with their breakout cable:
http://www.altium.com/community/newsletters/february-09/en/jtag_adapter.cfm
If you need to plug/unplug it a fair bit just tape the pins together
in the right shape, then pull the tape off for the next layout.
That is really nice if you switch layouts often, but is a PITA
otherwise. I have an altium cable at work which I use exclusively for
xscale debugging - I made an adapter with a 2x10 male+female connector
soldered together 1:1, so I can plug the altium pins on the back in the
right positions, and plug/unplug the whole thing from a target without
worrying which wire goes where everytime (there are empty positions, so
taping the single pins together does not work well).
cu
Michael
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