> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Joerg > Sent: Tuesday, November 04, 2008 7:15 PM > To: [EMAIL PROTECTED] > Subject: Re: gEDA-user: powermeter board, with less ground planes :-)
.... > >> If by circuit panel box you mean the breaker box (or a sub-panel) > >> legally you aren't supposed to do that AFAIK. > > > > I suspect you're right, but then again, I don't plan on these being > > *that* permanent. Ideally, they'd run off a transformer in the box > > and use radio or fiber to get the data out, but radio won't pass > > through a metal box that easily. > > > > Theoretically you could use a doorbell transformer, some come > in breaker-panel compliant sizes. For data USB needs a direct > connection and if that's all the R8C got, what can you do? > Ethernet would be isolated but I don't know what's out there > on the market to isolate USB. > I think WiQuest had that but AFAIK they are gone. Some > robotics places might have modules. B&B Electronics (www.bb-elec.com) has isolated usb hubs, as well as usb-to-ethernet and usb-to-RS232/485/422 converters that you might find useful. We use a ton of their add-in serial cards. ---------------------------------- David Kerber Warren Rogers Associates (800)-972-7472 x-111 [EMAIL PROTECTED] www.WarrenRogersAssociates.com ---------------------------------- _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
