Karl Townsend wrote:
On Thu, 04 Nov 2010 18:54:04 -0700, Tim Wescott
wrote:

On 11/04/2010 04:44 PM, Karl Townsend wrote:
On Thu, 04 Nov 2010 12:19:48 -0700, Tim
wrote:

On 11/03/2010 06:51 PM, Karl Townsend wrote:
I need to make up connectors like you see on the back of a computer.
My servo amps have a couple 2 row 15 pin, a 2 row 25 pin, and a 3 row
26 pin places to connect.

I'm seeing a bewildering number of possibilities in digikey. FWIW the
connector plug I'm after is similar to this pictu
http://search.digikey.com/scripts/Dk...name=A32073-ND

or digikey part A32073-ND. I'm not after this part, just trying to
show the connector.

I'm not at all good at soldering in tight places. I much prefer
something that can be made up by crimping. I have a Molex type crimp
tool.

can someone suggest a good series of parts for this?
Crimpers for those things need to be high quality, and the decent ones
cost $$$.
I guess I'll find out. I plan to crimp them with whatever I can come
up with and then solder before inserting. Total cost was under $20 so
I'm not out much if it don't work. Plan "B" would be to hire the job
out and get the solder type.
The pins have a round barrel into which you insert the wire. The
crimper pushes four hardened pins into the barrel, dimpling it and
pressing it onto the wire. Tres fancy. Because the barrel of the pin
extends down into the hole in the housing you can't just crimp it by
crushing it -- you have to do something that'll make it grip the wire
without deforming it to the point where it won't go into its hole.

(I think the barrel is relieved where the crimper dimples it, so any
little 'outies' don't interfere with putting it into the housing).

How far out in the boonies are you? Any electronics place that deals
with DB connectors has a chance at having the crimper; if there's a
contract cable assembly guy near you he'd probably be happy to make them up.

Note: I'd solder them myself, but I solder all the time. If I had to
hire it done I'd either make damn sure the guy understood crimped DB
connections, or I'd hire a kid to do the soldering and I'd stand over
him for the first few connectors to make sure they were right. If I
made more than 10 cables a year I'd probably buy a crimper -- but I make
less than 1, on average.

Thanks for the info. i can duplicate that easily. I'll drill a hole in
scrap stock to hold the pin. Then a cross hole to hold a center punch.
Put wire and pin in there and give it a slight whack for an indent.
Then solder it.

karl


Just solder them, Karl.