Does anyone know of a 25 pin D connector (serial type) that has pins at a
right angle and whose pins are 0.100 pitch? Wanted to do a project that
uses it and put it onto some perf board with predrilled 0.100 holes.
> Hi,
>
> Does anyone know of a 25 pin D connector (serial type) that has pins
> at a
> right angle and whose pins are 0.100 pitch? Wanted to do a project
> that
> uses it and put it onto some perf board with predrilled 0.100 holes.
>
> Thnaks,
>
> Rob
The best thing to do here Rob is to use a set of male header pins (2 by
13), an IDC Crimp connector, flat ribbon cable and a crimp DB-25 to
suit. It's not all that difficult.
>Rob Zitka wrote:
>
>> Hi,
>>
>> Does anyone know of a 25 pin D connector (serial type) that has pins
>> at a
>> right angle and whose pins are 0.100 pitch? Wanted to do a project
>> that
>> uses it and put it onto some perf board with predrilled 0.100 holes.
>>
>> Thnaks,
>>
>> Rob
>
>The best thing to do here Rob is to use a set of male header pins (2 by
>13), an IDC Crimp connector, flat ribbon cable and a crimp DB-25 to
>suit. It's not all that difficult.
>
>You won't find a R/A DB-25 at .1" centers. .
>
>Don McKenzie EraseMEdonspam_OUTTakeThisOuTdontronics.comhttp://www.dontronics.com
>
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>
>
> Does anyone know of a 25 pin D connector (serial type) that has pins at a
> right angle and whose pins are 0.100 pitch? Wanted to do a project that
> uses it and put it onto some perf board with predrilled 0.100 holes.
I don't believe any such thing exists. There are four reasonable options
you might want to consider:
[1] Use a 2x13-pin [0.1"] connector, 25-conductor ribbon cable, a
squeeze-on 2x13-pin IDC connector (to mate with the first connector), and
a squeeze-on DB-25. Get you were you're going without any soldering
(except putting the 26-pin connector on the board) and also provides an
arbitrary-length cable extension.
[2] Many PC-clone computers include an assembly which is just like the
above cable, typically with 6" between the connectors. If you could find
a PC place that would sell you one cheap, that may be the way to go.
Parallel cables (26-pin box connector to DB-25) may be hard to find, but
serial cables (10-pin box to DB-9 or DB-25) are quite common. You need to
be aware, however, that not all serial cables are wired identically. On
some of them, the pins on the box connector correspond to the following
DB-9 pins:
1 2 3 4 5
6 7 8 9 -
On others, the pinout is
1 3 5 7 9
2 4 6 8 -
To make things more bizarre, I have been informed that--just to make
things more interesting--there's even another variation out there, modeled
after the ordering of pins in a DB-25 serial cable. Nonetheless, if you
can get pre-fab cable assemblies that meet your need that may be a good
way to do things.
[3] Some PCB-mount connectors have pins that are somewhat mushable; the
ones that Radio Shack used to sell could take a fair amount of play on the
pins if you removed a plastic piece that was holding them straight. I
have soldered such connectors to 0.1" perfboard (leaving gaps in the
perfboard every few pins so as not to force more than 0.05" compliance).
If you don't need all the pins, cutting off the ones you're not using will
make this method much easier.
[4] If you only need a few pins, you can always use a solder-cup connector
and just run the necessary wires to the board.
At 09:46 PM 10/7/97 +0000, you wrote:
>> Does anyone know of a 25 pin D connector (serial type) that has pins at a
>> right angle and whose pins are 0.100 pitch? Wanted to do a project that
>> uses it and put it onto some perf board with predrilled 0.100 holes.
>
>I don't believe any such thing exists. There are four reasonable options
>you might want to consider:
>
>[2] Many PC-clone computers include an assembly which is just like the
>above cable, typically with 6" between the connectors. If you could find
>a PC place that would sell you one cheap, that may be the way to go.
>Parallel cables (26-pin box connector to DB-25) may be hard to find, but
>serial cables (10-pin box to DB-9 or DB-25) are quite common. You need to
>be aware, however, that not all serial cables are wired identically. On
>some of them, the pins on the box connector correspond to the following
>DB-9 pins:
>
Not a bad alternative. Will check some computer shows for cheap ones.
>
>To make things more bizarre, I have been informed that--just to make
>things more interesting--there's even another variation out there, modeled
>after the ordering of pins in a DB-25 serial cable. Nonetheless, if you
>can get pre-fab cable assemblies that meet your need that may be a good
>way to do things.
>
>[3] Some PCB-mount connectors have pins that are somewhat mushable; the
>ones that Radio Shack used to sell could take a fair amount of play on the
>pins if you removed a plastic piece that was holding them straight. I
>have soldered such connectors to 0.1" perfboard (leaving gaps in the
>perfboard every few pins so as not to force more than 0.05" compliance).
>If you don't need all the pins, cutting off the ones you're not using will
>make this method much easier.
Not very professional looking, but may work for what I need.
>
>[4] If you only need a few pins, you can always use a solder-cup connector
>and just run the necessary wires to the board.
>
>
If I got a right angle type with screw down mounts this would work great!
Use a 26 pin header connector, with an IDC connnector on the cable.
And remember the numbering is different. (speaking from experience here)
Built my pic programmer with this setup.
I used to be able to get right-angled .1" spacing wire-wrap DB-25
connectors, but haven't seen them for years. Something I have done is to
mount an ordinary solder bucket connector on brackets, and wire the pins
down to wire-wrap pins on the board. It doesn't look very neat, but it
works!
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