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From: Adrian <bulleid@ku.gro.lioff>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: USB controlled mains switch
Date: Sun, 19 Jan 2025 13:53:49 +0000
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References: <TjgqpoLGRDjnFwvW@ku.gro.lloiff> <vmid5v$20nh3$1@dont-email.me>
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In message <vmid5v$20nh3$1@dont-email.me>, Mike Scott 
<usenet.16@scottsonline.org.uk.invalid> writes
>On 18/01/2025 23:07, Adrian wrote:
>> I'm looking for a USB controlled mains switch (230V AC) that I can 
>>connect to a PI to turn a mains power supply on and off.
>>  I've done a bit of digging around on the net, and the options seem 
>>to fall into two categories, either a relay device which means having 
>>rewire the device (which I'd rather avoid), priced around 30Euros or 
>>one that sits in line (between the device and the supply).  The latter 
>>appears to be in excess of 100Euros, which is considerably more than I 
>>want to pay.
>>  Any suggestions on where to look ?  I'm not interested in a wireless 
>>solution, as it is likely to be used in places where signals are not 
>>reliable.
>
>Oh, and if you only need a PI for local control, with no networking, 
>don't forget the PI can be an AP and run a nearby wireless device 
>without a central router.
>

The Pi already exists, and is connected to my home LAN (Ethernet).  A 
range of a few feet should work for WiFi (if I used the PI as an AP), 
but home WiFi is at best flaky where I want to run this, hence why the 
Pi is on Ethernet.

>(FWIW I'm leaning towards the Shelly Plus Plug, at around £20. IIRC 
>there's a euro version too. It's the only one I've found that seems not 
>to need cloud servers.)
>

£20 is nearer the make for what my soggy finger in the air suggested 
would be a sensible price, the LocalBytes site mentioned elsewhere in 
the thread comes out at £12.75.  Although I quoted prices in euros, I'm 
in the UK, but all the items I'd found so far were priced in euros.

Thanks

Adrian
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