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Author Topic: DB25 to DB25.  (Read 4662 times)

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Online Tweakie.CNC

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DB25 to DB25.
« on: July 02, 2013, 10:41:17 AM »
Sometimes I find it necessary to intercept signals on my Parallel Port cable in order carry out some external processing, such as delaying a signal or extending a pulse width etc.
In the past it has been convenient to use one of the ready made, inline RS232 testers (removing the internal resistors and LED’s) then making breaks in the appropriate tracks and connecting my external circuit to the appropriate pins. Constantly changing technology has now made these RS232 testers harder to obtain so I needed to create an alternative.

Routing a strip of double sided PCB with the required pin spacing (ready made strip board is of little use here as the DB25 pin spacing is rather odd and they are staggered between the rows) then cutting off the required length and soldering on a DB25 plug and a DB25 socket produced exactly what was required.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Chaoticone

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Re: DB25 to DB25.
« Reply #1 on: July 02, 2013, 10:48:13 AM »
Simply perfect!  :)

Brett
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Re: DB25 to DB25.
« Reply #2 on: July 02, 2013, 10:54:40 AM »
Nice job, but you have way to much time on your hands, LOL

Online Tweakie.CNC

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Re: DB25 to DB25.
« Reply #3 on: July 02, 2013, 11:23:47 AM »
 ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline budman68

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Re: DB25 to DB25.
« Reply #4 on: July 02, 2013, 01:57:37 PM »
Nice soldering there, Tweaks. I would be embarrassed to show what mine would look like  ;D

Dave
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Online Tweakie.CNC

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Re: DB25 to DB25.
« Reply #5 on: July 04, 2013, 04:20:24 AM »
Thanks Dave.

I have seen pic’s of your soldering and there is nothing wrong there.  ;)

All joking aside - the UK’s COSHH regulations, banning the use of the 60/40 (tin/lead), have made the job of ‘hand soldering’ a whole lot harder nowadays. It is no surprise, to me, that 60/40 is still allowed for military applications.  ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: DB25 to DB25.
« Reply #6 on: July 06, 2013, 04:11:16 PM »
Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver

Offline budman68

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Re: DB25 to DB25.
« Reply #7 on: July 06, 2013, 04:30:37 PM »
It'd be a heck of a lot easier for me, lol!!!!

Dave
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Re: DB25 to DB25.
« Reply #8 on: July 07, 2013, 01:36:32 AM »
 ;D ;D ;D

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.