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Groups > comp.arch.embedded > #31594

Re: Boxed MCU with RS-232 Port

From Paul Rubin <no.email@nospam.invalid>
Newsgroups comp.arch.embedded
Subject Re: Boxed MCU with RS-232 Port
Date 2023-01-20 19:14 -0800
Organization A noiseless patient Spider
Message-ID <877cxgsho8.fsf@nightsong.com> (permalink)
References (1 earlier) <HJl*VBG8y@news.chiark.greenend.org.uk> <87ilh3try3.fsf@nightsong.com> <GJl*KBK8y@news.chiark.greenend.org.uk> <3fbec746-63e2-4f82-8fc8-e8179936b49bn@googlegroups.com> <IJl*grQ8y@news.chiark.greenend.org.uk>

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Theo <theom+news@chiark.greenend.org.uk> writes:
> What is the use case for a programmable RS232-to-RS232 product?  If
> you can think of a use case, maybe you can find somebody who makes
> such a thing.

The search is not for an RS232-to-RS232 product per se, but for a small
computer with two RS232 ports.  In the Z80 era, those used to be
plentiful.  Of course they were considered full fledged personal
computers, in large expensive boxes, given the technology of time.

The lament is that there doesn't seem to be anything like that being
made today with modern technology.  Just a small box with a programmable
microprocessor inside, and two RS232 ports.  All the available products
add a massive amount of additional complexity.  It does seem like an
opportunity.

Imagining making something like that for myself makes me feel dismayed.
Besides the MCU board and enclosure, you also need a bunch of mounting
screws, standoffs, connectors, an enclosure made of sheet metal, tools
to drill holes for the standoffs and make D-shaped cutouts for the DB9
connectors, burn-in testing for everything, yada yada yada.  All that
stuff would have to be ordered from someplace, maybe multiple places.

Whenever I try to make anything physical, I invariably discover partway
through that I need some 10 cent part that I didn't think of earlier, so
I have to order that and wait N days for its arrival, then repeat this
process several times.  This is why custom made anything costs so much.
It's not like programming where if I need some chunk of software, I can
download it and have it a minute later.

It doesn't seem like THAT outlandish a wish to hope that box described
instead exists as an off the shelf product from somewhere.  It is weird
that it is so hard to find.

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Thread

Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 07:24 -0800
  Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 11:31 -0800
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 12:19 -0800
      Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 13:07 -0800
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 13:29 -0800
          Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 14:04 -0800
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 14:47 -0800
              Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 15:32 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 15:44 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 16:04 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 17:32 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 20:02 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 20:24 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-17 20:56 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-17 22:30 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 00:37 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 04:43 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 14:19 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 23:15 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 12:21 -0800
              Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 12:15 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 04:55 -0800
                Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 13:22 +0000
                Re: Boxed MCU with RS-232 Port Andrew Smallshaw <andrews@sdf.org> - 2023-01-18 13:28 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-18 06:20 -0800
      Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-01-18 10:04 +0100
  Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-18 16:18 +0000
    Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-18 14:10 -0800
      Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-19 10:29 +0000
        Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-19 05:41 -0700
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:00 -0800
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 12:42 -0800
              Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 14:10 -0800
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-19 16:16 -0800
        Re: Boxed MCU with RS-232 Port Grant Edwards <invalid@invalid.invalid> - 2023-01-19 16:07 +0000
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:13 -0800
          Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-19 14:51 -0700
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-19 10:06 -0800
          Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-20 13:03 +0000
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 06:28 -0800
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-01-20 19:14 -0800
              Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-20 20:41 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-01-21 05:05 -0700
              Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-01-21 10:53 +0000
          Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-01-20 19:17 +0100
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 12:37 -0800
              Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-01-20 23:02 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 14:08 -0800
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-01-21 01:38 +0200
                Re: Boxed MCU with RS-232 Port antispam@math.uni.wroc.pl - 2023-01-21 01:58 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 18:44 -0800
                Re: Boxed MCU with RS-232 Port antispam@math.uni.wroc.pl - 2023-01-21 20:02 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-22 17:12 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-02-03 09:22 -0800
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-02-03 10:04 -0800
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-26 22:24 +0300
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 02:27 -0700
  Re: Boxed MCU with RS-232 Port pozz <pozzugno@gmail.com> - 2023-01-20 08:54 +0100
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-01-20 01:03 -0800
  Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 12:18 -0700
    Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-22 20:35 -0700
      Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 23:26 -0700
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-22 23:28 -0700
          Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-23 10:06 +0000
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 00:59 -0700
          Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-23 09:00 -0700
            Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 01:03 -0700
        Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-23 08:54 -0700
          Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 01:02 -0700
            Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 01:43 -0700
            Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 12:44 +0100
              Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-24 14:20 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 08:08 -0700
                Re: Boxed MCU with RS-232 Port Theo <theom+news@chiark.greenend.org.uk> - 2023-03-24 16:23 +0000
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 13:42 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 14:31 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 18:19 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 18:22 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 18:34 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 19:43 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 20:01 -0700
                Re: Boxed MCU with RS-232 Port Paul Rubin <no.email@nospam.invalid> - 2023-03-24 21:18 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-24 15:35 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 18:21 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-24 19:21 -0700
                Re: Boxed MCU with RS-232 Port George Neuner <gneuner2@comcast.net> - 2023-03-25 21:42 -0400
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-25 19:26 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-26 18:27 +0000
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:23 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:32 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:52 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:30 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 20:31 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:04 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 09:21 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 09:56 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:08 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-27 20:46 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 14:50 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:07 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:24 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:36 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:37 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:42 -0700
                Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-03-27 11:03 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:11 -0700
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-27 17:47 +0300
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 08:05 -0700
                Re: Boxed MCU with RS-232 Port Dimiter_Popoff <dp@tgi-sci.com> - 2023-03-27 19:09 +0300
                Re: Boxed MCU with RS-232 Port David Brown <david.brown@hesbynett.no> - 2023-03-27 17:38 +0200
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:22 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:11 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:37 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:28 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:38 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:08 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:25 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:38 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 13:23 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-26 19:25 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-26 20:31 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 07:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 09:18 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 10:09 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 12:16 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 13:03 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 13:17 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 15:05 -0700
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-27 15:40 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 10:36 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 17:59 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 12:58 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 20:41 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-28 15:21 +1100
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 08:37 -0700
                Re: Boxed MCU with RS-232 Port Jim Jackson <jj@franjam.org.uk> - 2023-03-28 20:00 +0000
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 13:06 -0700
                Re: Boxed MCU with RS-232 Port Clifford Heath <no.spam@please.net> - 2023-03-29 08:03 +1100
                Re: Boxed MCU with RS-232 Port Don Y <blockedofcourse@foo.invalid> - 2023-03-28 00:11 -0700
                Re: Boxed MCU with RS-232 Port "b...@gmx.com" <bl1@gmx.com> - 2023-03-27 16:17 -0700
                Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 18:12 -0700
                Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 19:26 +0100
              Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 08:03 -0700
                Re: Boxed MCU with RS-232 Port Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2023-03-24 19:10 +0100
    Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-03-24 17:16 +0100
      Re: Boxed MCU with RS-232 Port Herbert Kleebauer <klee@unibwm.de> - 2023-03-24 18:54 +0100
      Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-24 11:34 -0700
  Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-27 10:18 -0700
  Re: Boxed MCU with RS-232 Port Uwe Bonnes <bon@hertz.ikp.physik.tu-darmstadt.de> - 2023-03-28 20:53 +0000
    Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-28 16:12 -0700
      Re: Boxed MCU with RS-232 Port Niklas Holsti <niklas.holsti@tidorum.invalid> - 2023-03-29 09:06 +0300
        Re: Boxed MCU with RS-232 Port Rick C <gnuarm.deletethisbit@gmail.com> - 2023-03-29 00:44 -0700

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