[time-nuts] Re: timing lab, remote control

[Azelio Boriani]

It can be done by a PIC and the MAC ENC28J60, there is no way to
implement something that can stay on an ethernet only by logic gates
(OK, add some FF), as was long ago possible with the GPIB (for
example). Operating system free, yes, you can: just an ENC28J60 and a
suitable microprocessor/microcontroller with a TCPIP library ready to
use like the Microchip's one. Then you must interact with it using a
telnet-like connection or UDP packets with your 8 or 16 I/O bits, so a
minimum of Windows or Linux programming is needed. Or make two boxes
that just see each other: I will investigate if it can be done by a
couple of evaluation boards.

On Thu, Jan 11, 2024 at 3:18 PM Tom Van Baak via time-nuts
<time-nuts at lists.febo.com> wrote:
>
> There was a posting from Skip a while ago that didn't come through. See
> below for his request. Me too.
>
> In my case, I have an area at home you could call my working bench. I
> also have small room, less accessible, where I keep my best clocks with
> as little human interference as possible. I'd like to improve its remote
> monitoring and control over ethernet.
>
> So the question is, does anyone make a black box that acts as a
> transparent latch or GPIO? I'd like 8 or 16 bits at my bench that when
> changed turn into bits in the remote lab. Ideally no setup, no protocol,
> no commands, no software, no operating system, no bugs; just two boxes
> with N pins on each end and changes are reflected from one to the other
> over LAN. TTL/CMOS level is fine. Some latency is ok.
>
> I'm not looking for yet another WiFi, Arduino/LAN, or R-Pi project, but
> rather a turn-key solution that just works. I spent a significant amount
> of time on the web, thinking this would be a trivial search, but I came
> up empty.
>
> Thanks,
> /tvb
>
>  > I'm looking for a box that has an Ethernet port on one side and some
> number or I/O
>  > (could be from 1 to n) on the other.  When two of these boxes are paired
>  > (by entering their respective IP addresses), the state of an input on
> one box is
>  > reflected in the output of the other box (and vice versa).
>  >
>  > An example would be if I had a switch hooked to the input of one box,
> its state would
>  > be reflected in the output of the paired box, such as controlling a
> motor remotely.
>  >
>  > Any ideas?  Perhaps there might be a business opportunity here if it
> doesn't exist.
>  > Thanks for the time,
>  > Skip Withrow
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