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   REPLY: <6pru5l-oju1.ln1@q957.zbmc.eu> d698df05   
   PID: SoupGate-Win32 v1.05   
   On 19/01/2025 09:04, Chris Green wrote:   
   > 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.   
   >>   
   > I don't understand the difference. Surely anything that's going to   
   > turn something on/off needs to be "one that sits in line (between the   
   > device and the supply)" doesn't it?   
   >   
   > Do you mean (the ones that cost 100 Euros or more) something that   
   > already has a mains plug and socket on it?  I think they're going to   
   > be expensive simply because they aren't much in demand.  What 'the   
   > world' wants is a WiFi connected switch and they're two a penny of   
   > course.   
   >   
   >   
   >> 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 think you'll probably have to bite the bullet and get a relay board   
   > of some sort. Does it **have** to be USB?  There's lots of quite neat   
   > relay hats for the Pi.   
   >   
      
   They aren't especially able to handle 230V at sane currents.   
      
   I made my own board up.  Featuring onboard PSU and mains chokes and   
   filers and a fuse, a 13A capable relay and a pi PICO. Also has an   
   optional temperature sensor hooked up to the ADC   
      
   Can send you the Gerbers if interested   
      
      
   --   
   If you tell a lie big enough and keep repeating it, people will   
   eventually come to believe it. The lie can be maintained only for such   
   time as the State can shield the people from the political, economic   
   and/or military consequences of the lie. It thus becomes vitally   
   important for the State to use all of its powers to repress dissent, for   
   the truth is the mortal enemy of the lie, and thus by extension, the   
   truth is the greatest enemy of the State.   
      
   Joseph Goebbels   
      
   --- SoupGate-Win32 v1.05   
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