Subj : Re: USB controlled mains switch
To   : Adrian
From : The Natural Philosopher
Date : Sun Jan 19 2025 13:04:34

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.
>
> Thanks
>
> Adrian

Pi Pico, transistor buffer and a big fat mains relay, plus code.
You can talk down the same USB you use to power it.

Less work and more cost - use a Pi with more USB onboard



--
"Socialist governments traditionally do make a financial mess. They
always run out of other people's money. It's quite a characteristic of them"

Margaret Thatcher

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