Andrey, I'm wondering if it may be possible to perhaps buy 2 of the custom cables you guys had made up for eyesis? These would work fine with my 12v cameras, as long as I connected them to 12v power source right? Cheers, Nathan
Sent from my iPad On 15/06/2011, at 3:30, Andrey Filippov <[email protected]> wrote: > > > ---------- Forwarded message ---------- > From: Andrey Filippov <[email protected]> > Date: Tue, Jun 14, 2011 at 11:29 AM > Subject: Re: [Elphel-support] POE card in custom enclosure? > To: Nathan Clark <[email protected]> > > > > > On Tue, Jun 14, 2011 at 9:37 AM, Nathan Clark <[email protected]> > wrote: > Andrey, > > Thanks for your insight! That sounds really quite cool! > A few questions (and please forgive my ignorance) > > I am using the 12v model elphel 353's- I would like to set up my box without > needing a customized PCB... > would it be possible to use your method and connect directly to one of the > molex's coming straight from a 12v DC PSU? > > > Nathan, why not? The idea was just to minimize number of internal connectors > where disconnection/reconnection is not needed for normal operation. With the > internal wiring it is sufficient that you can disconnect the cameras > themselves from the cables. > > Also, can you tell me how you powered the switch? was it on the same power as > the rest of the assembly, or did you have to power multiple inputs, one for > the switch & one for everything else? > The "data storage box" has cradles for the HDD/SDD, so it has a power supply > with +5V and +12V (in addition to 48VDC for the cameras). So the switch was > powered from the 12VDC (it is a combined 5/12VDC unit) > > > Finally, I'd love to know which switch you used. > > We used Netgear GS105 > > Once again, please forgive my ignorance I am not savvy with electronics and > your valuable knowledge is highly appreciated! > > thank you for the nice words, > > Andrey > > > > Thanks, > > Nathan > > > > > On Wed, Jun 15, 2011 at 1:15 AM, Andrey Filippov > <[email protected]> wrote: > Nathan, Sebastian, > > I can tell you how it is done in the Eyesis (it uses regular 48V, 36-72V > input). In order to reduce number of the connectors inside the camera (and > connectors are the most likely to fail components so just the network > connector on the NC353 camera can be a source of interruptions) we ordered > custom modified cables - the cables are cut open near the other (opposite to > the camera) connector (~10cm from the end), the two non-signal pairs are > separated from the RJ45 connector, extended anothe 10cm and a 2-pin Molex > Microfit-3 connectors are attached. Then, inside the "data storage box" these > connector plugs go the the 48V DC connectors on the PCB there, while RJ45 > (with only 2 pairs left) go to a small 5-port GigE switch. While the cameras > are 100Mbps, usage iof Gigabit switch makes sense - the single (gigabit) > downstream cable going out of the switch can handle 3 attached cameras > without slowing them down when they are working in parallel. > > Andrey > > > > On Tue, Jun 14, 2011 at 5:11 AM, Sebastian Pichelhofer > <[email protected]> wrote: > I guess it would work If the voltage range matches. > > What about 2 of these? > http://www.optimal-microsystems.com/store/product_info.php?cPath=37&products_id=187&osCsid=d1c5619458c4128fa95f8e62d04adad5 > > I assume your router will be inside the custom enclosure so these have > the advantage that only the connectors that go to the cameras are on > the outside surface of the custom enclosure and the cables inside the > enclosure can be routed easier. > > Regards Sebastian > > On Tue, Jun 14, 2011 at 13:03, Nathan Clark <[email protected]> wrote: > > Hi Sebastian, > > > > I certainly could put the current power injectors- as supplied from elphel- > > within the box. Although this would be a bit of a hack. > > I am hoping to construct a more "finished" device. It would be very nice, by > > design, to have neatly placed I/O ethernet ports properly embedded into the > > assembly! > > Admittedly it is total "Overkill"... (the whole project is really)- but > > would it still work? > > > > Cheers, > > > > Nathan > > > > > > On Tue, Jun 14, 2011 at 8:41 PM, Sebastian Pichelhofer > > <[email protected]> wrote: > >> > >> Hi Nathan > >> > >> Your cameras run on 12-36V and you should have the power injector > >> adapter cable right? > >> For this you would not need any PCB or circuit at all to inject the > >> power its simply connecting certain pins of the Ethernet cable to the > >> voltage. > >> > >> The link you provided states: "is an adaptor that eliminates the need > >> to run high voltage power 110VAC to remote wireless access in order to > >> power RF transmitters/receivers" so I think that's clearly an overkill > >> ;) > >> > >> Couldn't you just place the 2 injector cable adapters inside your > >> custom enclosure and wire both of them to a single battery with a > >> Y-power splitter cable? > >> > >> Regards Sebastian > >> > >> On Tue, Jun 14, 2011 at 12:30, Nathan Clark <[email protected]> > >> wrote: > >> > Hi guys, > >> > > >> > I am planning to construct an enclosure to house peripherals attached to > >> > my > >> > elphel cameras. > >> > This way I have everything I need in one neat box which can be powered > >> > from > >> > a single PSU- making the setup easier to manage in various situations. > >> > Additionally, I would also like to use this box to have 2x POE injectors > >> > contained within- further simplifying the design of the camera rig. > >> > > >> > I am hoping someone could have a look at the following component, and > >> > confirm whether or not it would be appropriate. > >> > > >> > INJECTOR-PS48 - http://www.eidusa.com/Electronics_Kits_PoE_injector.htm > >> > > >> > or if it is not the right component, is there something you could > >> > recommend? > >> > > >> > thanks for your time, > >> > > >> > Nathan > >> > > >> > PS. you can follow the progress of this project at the Apertus forum. > >> > http://cinema.elphel.com/forums/viewtopic.php?f=4&t=108 > >> > > >> > _______________________________________________ > >> > Support-list mailing list > >> > [email protected] > >> > > >> > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > >> > > >> > > > > > > > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > > > > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > > > > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
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