[sudo-discuss] null modem adaptor needed

[hol at gaskill.com]

i've got a DB-9 gender changer sitting around - would that work? coming
by sunday and would love to see the robot shake its maraca! 

On 2014-09-06 13:04, Jake wrote: 

> i feel ridiculous asking for a null-modem adaptor...
> 
> and certainly one can be made with a bit of soldering on a regular cable (which we have extras of)
> 
> but if anyone has a null-modem adaptor laying around, i think we need it for the robot. A DE-9 to DE-9 (male to female) would be ideal, although a DB-25 one would work too. Even if it goes from 25 to 9 pins that would be fine. We have lots of regular serial cables.
> 
> This is to hook the 3d-printing desktop computer up to the robot, so we can make it do more stuff. I am not sure a null-modem adaptor is needed, but it doesn't seem to say anything at all without one so i'm guessing that's the problem. Normally a disk drive (which we have) plugs into this port on the robot, so to connect the robot to a computer would suggest DTE-DTE which would require a null-modem adaptor.
> 
> -jake
> 
> * there is no such thing as a DB-9 connector:
> http://en.wikipedia.org/wiki/D-subminiature#mediaviewer/File:DSubminiatures.svg [1]
> 
> DCE/DTE and null-modem adaptors:
> http://en.wikipedia.org/wiki/Data_terminal_equipment [2]
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> sudo-discuss at lists.sudoroom.org
> https://lists.sudoroom.org/listinfo/sudo-discuss [3]
 

Links:
------
[1]
http://en.wikipedia.org/wiki/D-subminiature#mediaviewer/File:DSubminiatures.svg
[2] http://en.wikipedia.org/wiki/Data_terminal_equipment
[3] https://lists.sudoroom.org/listinfo/sudo-discuss
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