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From: Bakul Shah <bakul@bitblocks.com>
To: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] Floppy to modern files for Usenet maps
Date: Sun, 23 Jun 2019 18:40:13 -0700	[thread overview]
Message-ID: <20190624014020.D24AD156E40C@mail.bitblocks.com> (raw)
In-Reply-To: Your message of "Sun, 23 Jun 2019 20:53:19 -0400." <c9ca5a7f-4ba4-0273-6f49-57ba0ee61a06@kilonet.net>

On Sun, 23 Jun 2019 20:53:19 -0400 Arthur Krewat <krewat@kilonet.net> wrote:
> Both the AT&T and the USB cable will be "DTE" (Data Terminal Equipment - 
> ala terminal) vs. "DCE" (Data Communication Equipment - ala modem) - 
> you'll need a null-modem cable to correct that mismatch. Basically, if 
> not using hardware handshake, swap pin 2 and 3. ;)

Since mid 80s I have used Dave Yost's wiring scheme that
converts a DB-25 or DB-9 adapter to an RJ-45 socket:

http://yost.com/computers/RJ45-serial/

You wire any DB-25 or DB-9 DCE or DTE male or female adapter
so that the RJ-45 socket has the above pinout.  You figure
out which device needs what kind of adapter and permanently
attach the adapter.  Now you can use a standard "half-twist"
phone cable with 4, 6 or 8 wires and connect anything to
anything.

My last device with a real RS-232 interface (a CP-290 X10
controller) where I used this died 4-5 years ago. I still use
serial ports on RaspberryPis but talk to them via serial<->USB
adapters (these are 3.3V uarts).

  parent reply	other threads:[~2019-06-24  1:46 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-23 23:10 Mary Ann Horton Gmail
2019-06-23 23:52 ` Arthur Krewat
2019-06-24  0:02   ` Grant Taylor via TUHS
2019-06-24  0:35     ` Mary Ann Horton Gmail
2019-06-24  0:53       ` Arthur Krewat
2019-06-24  0:56         ` Larry McVoy
2019-06-24  1:12           ` Arthur Krewat
2019-06-24  1:31             ` William Pechter
2019-06-24  1:51               ` Arthur Krewat
2019-06-24  1:40         ` Bakul Shah [this message]
2019-06-24  3:20           ` Grant Taylor via TUHS
2019-06-24  0:50     ` Arthur Krewat
2019-06-24 21:07     ` Michael Kjörling
2019-06-24 21:30       ` Steve Nickolas
2019-06-24 21:59         ` Gregg Levine
2019-06-23 23:57 ` Grant Taylor via TUHS
2019-06-24  0:40   ` Mary Ann Horton Gmail
2019-06-24  1:37     ` William Pechter
2019-06-24  3:17     ` Jason Stevens
2019-06-24  1:57   ` Steve Nickolas
2019-06-24  2:09     ` pechter
2019-06-24  0:03 ` Theodore Ts'o
2019-06-24  0:19 ` Seth Morabito
2019-06-24  0:33 ` Larry McVoy
2019-06-24  1:58   ` Steve Nickolas
2019-06-25  3:54 ` Jonathan Gevaryahu
2019-06-25 11:21   ` ckeck
2019-07-09 16:28 ` Mary Ann Horton Gmail
2019-07-09 16:53   ` KatolaZ
2019-07-09 17:12   ` Henry Bent
2019-07-09 17:25     ` Seth Morabito
2019-07-09 17:34       ` Henry Bent
2019-07-09 19:19         ` Henry Bent
2019-07-09 19:41           ` Richard Salz
2019-07-09 20:09           ` Grant Taylor via TUHS
2019-07-09 20:58             ` Henry Bent
2019-07-09 20:54           ` Mary Ann Horton Gmail
2019-07-09 21:30             ` Grant Taylor via TUHS
2019-07-09 21:35               ` Grant Taylor via TUHS
2019-07-09 21:37             ` Grant Taylor via TUHS
2019-07-09 21:46               ` Henry Bent
2019-07-09 22:02                 ` Henry Bent
2019-07-09 23:23                   ` Mary Ann Horton Gmail
2019-07-10  0:06                     ` Dan Cross
2019-07-10  0:26                       ` Grant Taylor via TUHS
2019-07-10  0:38                         ` Dan Cross
2019-07-10  0:49                           ` Larry McVoy
2019-07-10  0:57                             ` Clem Cole
2019-07-10  1:26                               ` [TUHS] V0 B Compiler Warren Toomey
2019-07-10  1:29                                 ` Clem Cole
2019-07-10  1:32                                   ` [TUHS] Plot 10 Sources Clem Cole
2019-07-10  2:51                                     ` Charles Anthony
2019-07-10  3:00                                       ` Charles Anthony
2019-07-10  3:01                                       ` Clem Cole
2019-07-10 12:51                                     ` Nelson H. F. Beebe
2019-07-10 14:34                                       ` Clem cole
2019-07-10  1:02                             ` [TUHS] Floppy to modern files for Usenet maps Arthur Krewat
2019-07-10  1:19                               ` Larry McVoy
2019-07-10  1:34                                 ` Dave Horsfall
2019-07-10  0:28                       ` Mary Ann Horton Gmail
2019-07-09 22:01               ` Mary Ann Horton Gmail
2019-07-09 22:44                 ` Grant Taylor via TUHS
2019-07-09 23:14                   ` Mary Ann Horton Gmail
2019-07-10  0:24                     ` Grant Taylor via TUHS
2019-07-10  1:13                       ` Mary Ann Horton Gmail
2019-07-09 17:33     ` Clem Cole
2019-07-15  3:21   ` [TUHS] Historical " Mary Ann Horton Gmail

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