Re: timing lab, remote control
Well, it wouldn't be turnkey, but it would be almost trivial to do it
the old-fashioned way with direct signalling. It depends on the ethernet
connections. If there's only one cable/port/etc that is already
committed, then not so good, but if you have a Cat-5 or whatever point
to point hard line available, or you can readily add one, then you've
got 8 wires per cable available that you can work in countless ways.
Simple DIY logic at each end can give as many bits as needed,
bidirectional action, and low noise/interference. Optocouplers and such
can give isolation and protections as needed too. You could even send
low speed analog signals - pure, clean, accurate, and simple.
If there is one and only one ethernet line available and committed, then
you likely still have four unused wires available (unless it's a POE or
special type setup that needs them), that can be used for low speed
signalling - not as good or clean, but better than nothing.
The best part of this old-school kind of scheme is that you would have
absolute full control and knowledge of what's in there and what it's
doing at all times, and the flexibility to easily modify it as needed.
BTW if this sort of function is desired but no cables are available,
there are RF transceivers with simple parallel bit-for-bit protocols,
including bidirectional. I got a bunch of these for planned remote
control and monitoring projects at the farm. They are 915 MHz ISM, with
about a mile range outdoors.
Ed
Hi
A basic twisted pair and a couple of FPGA boards could do pretty much the same thing.
If this is supposed to be a “not a lot of work” project … I suspect this gets crossed off the list pretty early on.
Bob
On Jan 12, 2024, at 2:03 PM, ed breya via time-nuts time-nuts@lists.febo.com wrote:
Well, it wouldn't be turnkey, but it would be almost trivial to do it the old-fashioned way with direct signalling. It depends on the ethernet connections. If there's only one cable/port/etc that is already committed, then not so good, but if you have a Cat-5 or whatever point to point hard line available, or you can readily add one, then you've got 8 wires per cable available that you can work in countless ways. Simple DIY logic at each end can give as many bits as needed, bidirectional action, and low noise/interference. Optocouplers and such can give isolation and protections as needed too. You could even send low speed analog signals - pure, clean, accurate, and simple.
If there is one and only one ethernet line available and committed, then you likely still have four unused wires available (unless it's a POE or special type setup that needs them), that can be used for low speed signalling - not as good or clean, but better than nothing.
The best part of this old-school kind of scheme is that you would have absolute full control and knowledge of what's in there and what it's doing at all times, and the flexibility to easily modify it as needed.
BTW if this sort of function is desired but no cables are available, there are RF transceivers with simple parallel bit-for-bit protocols, including bidirectional. I got a bunch of these for planned remote control and monitoring projects at the farm. They are 915 MHz ISM, with about a mile range outdoors.
Ed
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
What about Lora, many easy to understand tutorials out there.
https://youtu.be/YQ7aLHCTeeE?si=4ygmi_3nrJkkSZlN
<BTW if this sort of function is desired but no cables are available,>
<there are RF transceivers with simple parallel bit-for-bit protocols,>
<including bidirectional. I got a bunch of these for planned remote>
<control and monitoring projects at the farm. They are 915 MHz ISM, with>
Ed
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
If wifi works for you - my go-to is also the ESP8266 or ESP32.
Don't start writing software for it - flash it with Tasmota, a mature,
stable platform for home automation. It has a fairly simple web interface,
NTP, timers, sensors, rules, scripting etc.
In a few minutes of web configuration, you'll have a board you can control
with something like http://basementswitch/cmnd="power4 on"
Here's an example of an 8-relay board for $25
https://universal-solder.ca/product/8-channel-wi-fi-relay-module-esp8266-esp12f/,
or search amazon for "8 relay esp8266" or "esp32 8 relay"
[image: image.png]
You flash the board straight from the web, probably with an "FTDI cable",
sometimes USB.
I find Tasmota pretty reliable, uptime is limited by the power supply, some
of mine are over 500 days. It's not fast, perhaps 0.25 s delay overall.
Weak wifi causes more delays.
With a little more configuration you could have the hardware in-to-out
feature, for example I have some light switches that trigger other ones,
etc, but for experiments, remote RF switches etc I just use the web page,
or telnet interface from my script.
Thomas
Tell me (us) more.
Wes, N7WS
On 1/12/2024 12:03 PM, ed breya via time-nuts wrote:
[snip]
BTW if this sort of function is desired but no cables are available, there are
RF transceivers with simple parallel bit-for-bit protocols, including
bidirectional. I got a bunch of these for planned remote control and
monitoring projects at the farm. They are 915 MHz ISM, with about a mile range
outdoors.
Ed
Good evening,
I am new here on the mailing list. Happy to read the mails, full of valuable
information to get additional knowledge, so I can learn a lot - thank you!
I have a HP 5061A and a FTS 4050 Cs133 clock in reach. The Caesium tubes are
end of life, I was told. The clocks are out of service since a long time, at
least about 15 years. What do I have to do? Does anyone here have
replacement tubes available for me? Would be very happy to activate at least
one Cs133 clock.
Thank you for replies, best regards
Thomas, OE6TZE
the tubes are available from Microsemi/Symmetricom, the problem is that
the tubes have a US 20,000+ pricetag and im probably low on my pricing
estimate.
On Sat, Jan 13, 2024 at 2:45 PM Thomas Zurk via time-nuts <
time-nuts@lists.febo.com> wrote:
Good evening,
I am new here on the mailing list. Happy to read the mails, full of
valuable
information to get additional knowledge, so I can learn a lot - thank you!
I have a HP 5061A and a FTS 4050 Cs133 clock in reach. The Caesium tubes
are
end of life, I was told. The clocks are out of service since a long time,
at
least about 15 years. What do I have to do? Does anyone here have
replacement tubes available for me? Would be very happy to activate at
least
one Cs133 clock.
Thank you for replies, best regards
Thomas, OE6TZE
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
Hi Wes,
It looks like you wanted some info on these transceivers. It was a
couple years ago I think, so I'll have to look at the items and
documents when I next get to the farm, where it's all piled up. I can't
even remember the brand or names now, but it's all there. If I should
forget to put it up within a couple weeks, just remind me.
Ed
Wes -
The magic word (i.e. Google search term) is SCADA, Supervisory Control and
Data Acquisition. There are lots of SCADA radios on eBay; Teledesign TS4000
is a good model to start with.
https://www.ebay.com/sch/12576/i.html?_from=R40&_nkw=scada
Regards,
Michael
-----Original Message-----
From: ed breya via time-nuts time-nuts@lists.febo.com
Sent: Monday, January 15, 2024 1:57 AM
To: time-nuts@lists.febo.com
Cc: ed breya eb@telight.com
Subject: [time-nuts] Re: timing lab, remote control
Hi Wes,
It looks like you wanted some info on these transceivers. It was a couple
years ago I think, so I'll have to look at the items and documents when I
next get to the farm, where it's all piled up. I can't even remember the
brand or names now, but it's all there. If I should forget to put it up
within a couple weeks, just remind me.
Ed
time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an
email to time-nuts-leave@lists.febo.com