The cape for $69 is not PoE compliant because PoE standard requires 48VDC and not 24 or less 13 Янв 2016 г. 5:39 пользователь "William Hermans" <[email protected]> написал:
> *The dongle on adaifruit requires you to provide the 5volt dc power >> supply.. It's just a passive adapter..* >> >> *but it got my thinking about the spagetti mess of 7 bbb's i have in the >> corner for 24/7 testing. ;)* >> >> *Regards,* >> > > Ah ok, yeah I did not realize it was only a power injector. I assumed it > was somehow stepping down 48VDC to 5V. So for your spaghetti mess, why not > get, or design a "power rail" like some do in data with many rack system, > but instead of 12, 5, and 3.3, just do 5 volts ;) > > > > On Tue, Jan 12, 2016 at 7:26 PM, William Hermans <[email protected]> > wrote: > >> OK, so I'm not an EE, even though I do have a lot of experience with many >> form of electronics, and definitely some with PoE too . . . But I'd think >> that it should not be unheard of to get the price of a PoE cape down to >> under $20USD. *That* would be useful to some I'm sure. >> >> On Tue, Jan 12, 2016 at 7:15 PM, Robert Nelson <[email protected]> >> wrote: >> >>> >>> >>> On Tue, Jan 12, 2016 at 8:13 PM, William Hermans <[email protected]> >>> wrote: >>> >>>> *It was also the right decision... over the life of this forum, only 17 >>>>> topics related to POE:* >>>>> >>>>> >>>>> *https://groups.google.com/forum/#!searchin/beagleboard/POE >>>>> <https://groups.google.com/forum/#%21searchin/beagleboard/POE>* >>>>> >>>>> *i think i spam more topics in the average week..* >>>>> >>>>> *Regards,* >>>> >>>> I would imagine most people would rather not spend the extra cost of >>>> PoE if they could avoid it. Even if somehow Gerald miraculously got the >>>> price down to ~$6 like the cost of that dongle you posted a link to Robert >>>> . . . Usually, PoE items cost a lot more, which has me thinking that dongle >>>> is somehow suspect . . . >>>> >>> >>> The dongle on adaifruit requires you to provide the 5volt dc power >>> supply.. It's just a passive adapter.. >>> >>> but it got my thinking about the spagetti mess of 7 bbb's i have in the >>> corner for 24/7 testing. ;) >>> >>> Regards, >>> >>> -- >>> Robert Nelson >>> https://rcn-ee.com/ >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
