I've just tried it on a 493 board and it works, but the pinning/wiring is different, which is probably the same for any RB that uses the ethernet socket marked as 47F-1205BGYDNW2NL.Is the RB750 the only board this can be done to...how about a 433 board?
I think there is a diode to prevent this. But you could remove the diode, at your own risk.
if you plug power into the RB433 via teh dc jack wil there be PoE (out) on the PoE ethernet port?
That is true.If you make this with a 493, and you connect a laptop on it, it's possible to have problems with the POE and the lan of the laptop. Due to the laptop don't accept "powered pins", true?
Most decent laptops have built-in protection to prevent this. as more PoE devices start appearing, expect this to be implemented in more laptops and other devices.That is true.If you make this with a 493, and you connect a laptop on it, it's possible to have problems with the POE and the lan of the laptop. Due to the laptop don't accept "powered pins", true?
Some devices do not like PoE at all.
My laptop (acer) is OK with it.
This is something I'd like to know too. The reply you got about 'bridging' applies to the network-level bridging (ie. letting Ethernet traffic pass from one port to another), but what you (and I) are looking for is to know what happens if we:On the RB433,
it has one PoE port?
if you plug power into the RB433 via teh dc jack wil there be PoE (out) on the PoE ethernet port?
So i could connect a second Routerboard to the RB433 with one power supply, and they would be bridged then?
I already answered this. Scroll up.This is something I'd like to know too. The reply you got about 'bridging' applies to the network-level bridging (ie. letting Ethernet traffic pass from one port to another), but what you (and I) are looking for is to know what happens if we:
We have two RB433s, let's call them RB433-1 and RB433-2
- Plug a PSU via DC jack into RB433-1
- Plug an Ethernet cable between RB433-1's Ether1 and RB433-2's Ether1
- Do NOT plug a PSU into RB433-2
Will RB433-2 get power from RB433-1's PSU via PoE?
Anybody managed to do a hack to do this? with RB493?
Email me at adrian@adrianatkins.com for a PCB that makes it a lot easier to do the soldering.Hi,
Great mod this. Is there a device or a way to more easily soldar the poe across the 5 ports? I'm planning on using the peo mod on a lot of RB750 boards.
That is *exactly* what you can get.We have two RB433s, let's call them RB433-1 and RB433-2
- Plug a PSU via DC jack into RB433-1
- Plug an Ethernet cable between RB433-1's Ether1 and RB433-2's Ether1
- Do NOT plug a PSU into RB433-2
Will RB433-2 get power from RB433-1's PSU via PoE?
I stopped buying those aluminum cases ages ago !Similar device.
AA:God, Mikrotik and the Laws of Economics all conspire to protect the eager MT User : the PCB power tracks are too thin to support a fire-making current.
Basically there's a fire-preventing Fuse already there.
Can i ask what do you now use instead of those cases?I stopped buying those aluminum cases ages ago !Similar device.
They leak.
Condensation forms easily.
The rubber gasket falls out.
The Hex-head cover screws weld themselves in and need drilling out after about a year.
Use a different case !
Interesting, thanks for the info. I googled and using tools from links below verified what you are saying:AA:God, Mikrotik and the Laws of Economics all conspire to protect the eager MT User : the PCB power tracks are too thin to support a fire-making current.
Basically there's a fire-preventing Fuse already there.
I hate to beat this to death, but it's important to point out gross misconceptions.
I designed circuits for 15+ years before getting into networks.
I roughly estimated: 2oz copper, 1 inch length and 1/8 inch width from the picture.
Maybe more, maybe less.
BUT, even with those numbers, 10A will cause about about a 12.5C rise above ambient.
Hardly a fuse. Just warm to the touch.
The melting point of copper is about 1000C.
If the pcb copper gets hot enough to melt - effectively a fuse - you already have a fire.
10A will generate temperatures high enough to cause a fire as will 1mA if the conductor is not sized to handle it.
That's why survivalists like steel wool and a battery. Thin wire, high current, high temperature.
Here's a pcb trace calculator I found using the googles:
http://circuitcalculator.com/wordpress/?p=25/
If this post had bad advice about a route, I wouldn't care, but the average Joe may think this mod is safe reading your last post.
I think God and Mikrotik will stay clear of this one.
Cau you make future product? RB2011UP ?for other routers such mod would not be that elegant. Also, most probably not for GIG interfaces.
Also Nice hack!i'm interested in can i upgrade other RB? e.g. RB2011LS-IN...