From: tnp@invalid.invalid   
      
   On 04/08/2025 09:04, Mike Scott wrote:   
   > On 02/08/2025 12:44, Gordon Henderson wrote:   
   >> Personally, I think that if I already had a working bank of mechanical   
   >> relays (with opto isolated inputs such as the multitude sold for Adruino   
   >> and Pi) I'd just suck it up and give it a separate 5v PSU capable   
   >   
   > Yes, sound advice. Thanks. I was working out late last night this will   
   > be outside a normal usb current limit. I do have a suitable bank of   
   > relays, and I'm pretty sure there must be a spare 5V wall wart around   
   > somewhere.   
   >   
   > Thanks to all for comments offered. I think I'll have to stick to the   
   > old-fashioned way here.   
   >   
   >   
   I've got bare pcbs with a 5V psu and buffered 4 buffered relay coils   
   that can interface to  a Pi if you want   
      
   Supply the voltage and have transistors and LEDS to drive and show relay   
   status   
      
   http://vps.templar.co.uk/Odd%20stuff/HC.JPG   
      
   Its interfacing to a zero there, but a Pico can run off 5V as well   
      
      
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   “it should be clear by now to everyone that activist environmentalism   
   (or environmental activism) is becoming a general ideology about humans,   
   about their freedom, about the relationship between the individual and   
   the state, and about the manipulation of people under the guise of a   
   'noble' idea. It is not an honest pursuit of 'sustainable development,'   
   a matter of elementary environmental protection, or a search for   
   rational mechanisms designed to achieve a healthy environment. Yet   
   things do occur that make you shake your head and remind yourself that   
   you live neither in Joseph Stalin’s Communist era, nor in the Orwellian   
   utopia of 1984.”   
      
   Vaclav Klaus   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)