I use OSH park, $5 per square inch for 3 boards. PCB's are designed in EagleCAD. RJ45 jacks are easy to do in Eagle as the templates are already there for a lot of parts.
Here is a link to a three port RJ45 jack that I have used in other projects. These are $12.19 each, but I could probably find something less expensive. http://www.mouser.com/Search/ProductDetail.aspx?R=5557561-1virtualkey57100000virtualkey571-5557561-1 The case would add to the cost but you just need a couple mounting holes in the PCB, also easily done in Eagle. So you'd be looking at $12 for the jack, about $7 for three PCB's (assuming 1.5 sq in), a few cents for a barrel jack and then whatever for your enclosure. So likely much more expensive to go this route, but as nothing else exists like it, so you're going to have to pay a premium. Pricing is reasonable if you only need a few. If you need hundreds then it becomes a problem and you would probably have to have someone else manufacture and assemble them, likely somewhere other than in the US. If you want I can cook something up in Eagle and spit out the gerber files for you along with a bill of materials. Shouldn't take more than a few minutes to do it, and it shouldn't be much larger than what is required for the ports themselves and the barrel connector. If you want any circuit protection that would increase the size of the board and raise the cost. Let me know if you want me to do it, if not, I'll let this thread die. -- Christopher Tyler MTCRE/MTCNA/MTCTCE/MTCWE Total Highspeed Internet Services 417.851.1107 ----- Original Message ----- From: "Matt" <matt.mailingli...@gmail.com> To: af@afmug.com Sent: Thursday, January 15, 2015 3:14:58 PM Subject: Re: [AFMUG] Custom Poe Injector > This would be pretty easy to engineer. I already have a PCB that does 66% of > this, adding a barrel connection to the board would be trivial. > Cost would likely be about 4-7 dollars per device. All passive components so > any voltage would be used. I have used PCB123 before but I would really need a neat small case for the PCB and female RJ45 to go in. Any ideas on components for that? > I would like to find something like this. > > http://www.wlanparts.com/tycon/poe-yinj-s-passive-poe-y-injector/ > > Only I want it to send 24 volts out both ends but in different > polarities. Female end will power up a Canopy SM while male end will > power up Mikrotik router. That way I can provide a managed router and > CPE that only uses one AC outlet. Anyone seen anything like that or > know where I can have it made?
