Re: smart plugs???

From	The Natural Philosopher <tnp@invalid.invalid>
Newsgroups	comp.os.linux.misc, alt.os.linux.mint
Subject	Re: smart plugs???
Date	2025-01-18 11:01 +0000
Organization	A little, after lunch
Message-ID	<vmg1ma$ofht$10@dont-email.me> (permalink)
References	<vm8nvf$312bv$1@dont-email.me> <vmatqg$3gi7d$1@dont-email.me> <vmb1c7$3grs4$1@dont-email.me> <vme1k3$4c4v$2@dont-email.me> <vmf4m2$dal9$1@dont-email.me>

Cross-posted to 2 groups.

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On 18/01/2025 02:46, Paul wrote:
> On Fri, 1/17/2025 11:48 AM, Mike Scott wrote:
>> On 16/01/2025 13:25, Alan K. wrote:
>>>> If you're up to a bit of wiring, try a USB relay. E.g. Annadue Relay Module (try Amazon, 2 channel £10.62)
>>>> Interface: apt install usbrelay
>>>> usbrelay --debug for information
>>>>
>>>> 1, 2, 3, 8 channels available
>>>>
>>>>
>>> https://www.amazon.com/DSD-TECH-SH-UR01A-Controller-Computer/dp/B09PYML6Q7
>>> That's the coolest.  Damn! I wish I had that back when!   Of course Linux Mint and good computers etc weren't available when I was a huge DIYer and tinkered, but it really would have been fun.
>>
>>
>> Nice idea... but I'm looking at probably 3kW at 240V to run a heater.
>>
>> The power level is just a bit outside my comfort zone for home construction, especially for unattended operation.
>>
>> It's why I'm trying to find a commercial solution.
> 
> You can use a relay, to switch a relay.
>

No need., You can use a transistor to buffer a PIO output and drive a 
sensibly big relay directly

I sourced some 20A 250V relays from china that seem OK

JQX-15F-DC05V-A 4PIN

Is the magic keyword.

They take about a watt (200mA@5V) to drive them - beyond most PIO 
(16mA=80mW for the pico) but easily obtainable with a single transistor 
amplifier.

Strangely Europe doesn't make shit like this - you end up with massive 
contactors at a huge price instead.




-- 
“The urge to save humanity is almost always only a false face for the 
urge to rule it.”
– H. L. Mencken

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smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-15 16:32 +0000
  Re: smart plugs??? Andy Burns <usenet@andyburns.uk> - 2025-01-15 17:14 +0000
    Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-18 09:28 +0000
  Re: smart plugs??? Mike Easter <MikeE@ster.invalid> - 2025-01-15 09:30 -0800
  Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-15 18:30 +0000
  Re: smart plugs??? Pancho <Pancho.Jones@proton.me> - 2025-01-15 20:31 +0000
    Re: smart plugs??? Andy Burns <usenet@andyburns.uk> - 2025-01-15 20:35 +0000
      Re: smart plugs??? Pancho <Pancho.Jones@proton.me> - 2025-01-17 10:43 +0000
    Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-16 09:33 +0000
      Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-16 10:36 +0000
        Re: smart plugs??? D <nospam@example.net> - 2025-01-16 17:10 +0100
          Re: smart plugs??? Rich <rich@example.invalid> - 2025-01-16 20:07 +0000
            Re: smart plugs??? Phillip <nntp@fulltermprivacy.com> - 2025-01-16 15:48 -0500
              Re: smart plugs??? Rich <rich@example.invalid> - 2025-01-16 20:55 +0000
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-16 23:34 +0000
                Re: smart plugs??? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-01-17 00:22 +0000
                Re: smart plugs??? Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-01-17 02:53 +0000
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-17 03:49 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-17 10:45 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-17 19:27 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 11:38 +0100
                Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 11:04 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 18:04 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-18 19:04 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 11:38 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-19 18:41 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 23:04 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-20 01:57 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-20 10:37 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-18 19:00 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 11:37 +0100
                Re: smart plugs??? Joerg Walther <joerg.walther@magenta.de> - 2025-01-19 14:39 +0100
                Re: smart plugs??? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-01-19 18:11 +0000
                Re: smart plugs??? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-01-18 00:27 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 11:49 +0100
                Fitbit by Google (Re: smart plugs???) Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-01-17 18:34 +0000
                Re: Fitbit by Google (Re: smart plugs???) rbowman <bowman@montana.com> - 2025-01-17 20:40 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-17 10:40 +0100
                Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-17 10:37 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-17 16:46 +0100
                Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-17 15:47 +0000
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-17 19:15 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 11:37 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-18 19:14 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 11:40 +0100
                Re: smart plugs??? Pancho <Pancho.Jones@proton.me> - 2025-01-19 11:31 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 23:01 +0100
                Re: smart plugs??? rbowman <bowman@montana.com> - 2025-01-19 18:51 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-19 23:06 +0100
                Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-17 19:05 +0000
                Re: smart plugs??? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-01-18 00:27 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 11:47 +0100
                Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-17 19:02 +0000
              Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-17 16:42 +0000
                Re: smart plugs??? D <nospam@example.net> - 2025-01-18 11:35 +0100
            Re: smart plugs??? D <nospam@example.net> - 2025-01-17 10:14 +0100
      Re: smart plugs??? Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-01-16 13:45 +0000
      Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-16 15:20 +0100
        Re: smart plugs??? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-01-16 20:22 +0000
          Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-16 22:28 +0100
          Re: smart plugs??? D <nospam@example.net> - 2025-01-17 10:14 +0100
            Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-17 14:36 +0100
      Re: smart plugs??? Rich <rich@example.invalid> - 2025-01-16 20:05 +0000
  Re: smart plugs??? Chris Elvidge <chris@internal.net> - 2025-01-16 12:24 +0000
    Re: smart plugs??? "Alan K." <alan@invalid.com> - 2025-01-16 08:25 -0500
      Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-17 16:48 +0000
        Re: smart plugs??? Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-01-18 02:21 +0000
          Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-18 08:55 +0000
            Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 11:02 +0000
              Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-18 14:13 +0100
                Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 13:46 +0000
                Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-18 20:55 +0100
                Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-19 13:22 +0000
                Re: smart plugs??? "Carlos E.R." <robin_listas@es.invalid> - 2025-01-19 15:18 +0100
          Re: smart plugs??? Andy Burns <usenet@andyburns.uk> - 2025-01-18 11:19 +0000
            Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 11:25 +0000
          Re: smart plugs??? Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-01-18 15:12 +0000
            Re: smart plugs??? Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-01-18 15:31 +0000
            Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 15:39 +0000
            Re: smart plugs??? Paul <nospam@needed.invalid> - 2025-01-18 16:55 -0500
        Re: smart plugs??? Paul <nospam@needed.invalid> - 2025-01-17 21:46 -0500
          Re: smart plugs??? The Natural Philosopher <tnp@invalid.invalid> - 2025-01-18 11:01 +0000
            Re: smart plugs??? wicklowham <wicklowham.nospam@rfburns.eu> - 2025-01-18 13:00 +0000
  Re: smart plugs??? yossarian <<nomail@gmail.com>> - 2025-01-16 14:10 +0100
    Re: smart plugs??? Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-01-17 16:51 +0000
  Re: smart plugs??? Marc Haber <mh+usenetspam1118@zugschl.us> - 2025-01-16 22:24 -0700

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