Sujet : Re: smart plugs???
De : wicklowham.nospam (at) *nospam* rfburns.eu (wicklowham)
Groupes : comp.os.linux.misc alt.os.linux.mintDate : 18. Jan 2025, 14:00:36
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vmg8lk$resm$2@dont-email.me>
References : 1 2 3 4 5 6
User-Agent : Mozilla Thunderbird
On 18/01/2025 11:01, The Natural Philosopher wrote:
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
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1, 2, 3, 8 channels available
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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.
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Nice idea... but I'm looking at probably 3kW at 240V to run a heater.
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The power level is just a bit outside my comfort zone for home construction, especially for unattended operation.
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It's why I'm trying to find a commercial solution.
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You can use a relay, to switch a relay.
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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.
A good solution might be a 'solid state relay ',which is an opto-coupled device for 3 - 30 Volt -DC input combined with a triac output for up to 240V-AC
I have used these as intermediate switch between low voltage DC systems and AC powered devices.
Frank in County Wicklow -Ireland
smart plugs???
Re: smart plugs???