From: usenet.16@scottsonline.org.uk.invalid   
      
   On 04/08/2025 11:10, The Natural Philosopher wrote:   
   > 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   
   >   
   >   
   Thanks for the offer, but as I already have the 8-way bank, I'll settle   
   for that.   
      
   --   
   Mike Scott   
   Harlow, England   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)