From: cl@isbd.net   
      
   Mike Scott  wrote:   
   > Hi all. Two separate projects which will need a relay of some sort to   
   > run from a Pi or similar.   
   >   
   > I'm really looking for something plug-and-go rather than build-your-own   
   > (especially item 2 below)   
   >   
   > First is a dpdt relay to switch around 12-20 V at a couple of amps. spdt   
   > are easy to come by; the only dpdt ones I've found are on aliexpress,   
   > but their longevity is possibly open to question :-{   
   >   
   Try CPC (cpc.farnell.com), but you will probably need some sort of   
   'driver' between the Pi digital output and the relay coil.   
   Alternatively, as suggested here, a solid state switch or even an opto   
   isolator.   
      
      
   > Second is something to switch mains safely - a full 13A to run a 3kW   
   > heater. I've drawn a blank: best I can think of is to butcher one of   
   > those wireless mains switch modules, which would at least provide a good   
   > isolation gap :-)   
   >   
   Again CPC will probably have something, but again you'll need   
   something between the Pi and the 'whatever'.   
      
   Are there not ready made relay modules for the Pi?   
      
   --   
   Chris Green   
   ·   
      
   --- SoupGate-Win32 v1.05   
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