Post by thread:DB25 Connectors

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 spam_OUTdonTakeThisOuTdontronics.com http://www.dontronics.com Basic Stamp Windows 95 Front End Now Available. PicNPoke "Pacman like" Multimedia Simulator for the PIC16x84. SimmStick(tm) Atmel & PIC proto PCB's. 30 pin Simm Module Format. For more details, send a blank message to .....infoKILLspam@spam@dontronics.com or simstickKILLspamdontronics.com or .....basicsKILLspam.....dontronics.com

I kind of hoped not to have to go that route. Would have been nice to have a direct connection. Oh well. Rob At 12:13 PM 10/8/97 +1000, you wrote: {Quote hidden}>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.com http://www.dontronics.com > >Basic Stamp Windows 95 Front End Now Available. >PicNPoke "Pacman like" Multimedia Simulator for the PIC16x84. >SimmStick(tm) Atmel & PIC proto PCB's. 30 pin Simm Module Format. >For more details, send a blank message to infospam_OUTdontronics.com >or @spam@simstickKILLspamdontronics.com or KILLspambasicsKILLspamdontronics.com > >

> 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. {Quote hidden}> 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. 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! Thanks Rob

In message <RemoveME3.0.32.19971007213847.00dbe59cTakeThisOuThicom.net>, Rob Zitka <spamBeGonerobzsspamBeGoneHICOM.NET> writes >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. 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! Leon -- Leon Heller: TakeThisOuTleonEraseMEspam_OUTlfheller.demon.co.uk http://www.lfheller.demon.co.uk Amateur Radio Callsign G1HSM Tel: +44 (0) 118 947 1424 See http://www.lfheller.demon.co.uk/rcm.htm for details of a low-cost reconfigurable computing module using the XC6216 FPGA