Re: USB controlled mains switch

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 to 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.

I've a similar thread in c.o.l.misc in particular. Although that's headed 'smart plugs?' and looking for a wireless solution.
My own feeling is that the bigger the gap between mains and my electronics, the better, and wireless is a good way for this.
I suspect off-the-shelf products, at least consumer-grade, will be wireless. Might there be mileage in running network wires to local wireless repeaters, then using wireless switches? Or use a network-over-mains scheme?
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.
(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.)
--
Mike Scott
Harlow, England