4 Port Passive Hub Power

[njKeever]

I cannot find anywhere how we are supposed to hook up power to the 4 Port Passive Hubs. In the diagram it lists a standard PC power supply just like the 16 port hubs. But unlike the 16 port hubs there are not connectors on the hub and specific directions on hookup up the power. Are you guys just cutting off the main connector and wiring it to hub?

[chrisatpsu]

Ray sells 12 power supplies that could hook up to the 4 port hub)

if you have enough power in excess that you're not using from an active hub, you could add the 12v connector to the board, and use it to output power (using a separate cable) to the 4 port hub. (the cable size you use would depend on the amount of power being sent from hub to hub.)

[FireMedic4Christ]

I'm using 12v 400mA wall wart that has worked so far. It is only running 128 nodes right now, but by the end of the weekend I will be adding more. Hopefully it will be enough. I have a couple more with higher amps if needed.


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[chrisatpsu]

I'm using 12v 400mA wall wart that has worked so far. It is only running 128 nodes right now, but by the end of the weekend I will be adding more. Hopefully it will be enough. I have a couple more with higher amps if needed.


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wow..  I'm surprised it worked.   128nodes ~ 4A     400mA  =.4A

[rdebolt]

wow..  I'm surprised it worked.   128nodes ~ 4A     400mA  =.4A

Me too. I would not just go grab on to that wall wart, might burn your hand! 

[MrChristmas2000]

That could be a fire waiting to happen!!

[jeffcoast]

As long as he isn't turning them on white all at once, might not be an issue, but probably isn't a good idea, as sometime he may want that.
 

[njKeever]

So no one is running a PC power supply like in the You are not allowed to view links. Register or Login?

[rdebolt]

So no one is running a PC power supply like in the You are not allowed to view links. Register or Login?

Yes, but they are using an ATX power supply for the power. They are not using a wall wart. If you notice in the diagram the hub power supply is tied to an ATX power supply. You can use another 12 volt power supply source, but you need to make sure that when all of your lights are commanded full on that you are not exceding 80% of the sources output capability.

[injury]

I'm not certain but I think the real question he's going for is...in the block diagram it shows an ATX PSU powering the passive hub. However the power connector on the hub is 2 screw blocks so which wires hook up where?

[chrisatpsu]

it's a typo in the picture. we all make mistakes...

[injury]

Well with a homemade adapter grabbing the correct wires you could use an ATX psu right?

[chrisatpsu]

if you look online for a atx power supply hack, it's doable.

I usually don't give advice for it in case something goes wrong.

[FireMedic4Christ]

In the blinking test, it is working fine, but you are right as to it getting warm when all white. I didn't do any math to see how close that amps were, just wanted to make sure the passive hub and SS was working. When I mount it and hook up the other strings, I will obviously have to have another power supply of some kind.
 
Brian
 

wow..  I'm surprised it worked.   128nodes ~ 4A     400mA  =.4A

Me too. I would not just go grab on to that wall wart, might burn your hand!