Now that usb sticks are being sold by sidehack here is a new usb hub thread.

[isoneguy]

I placed one in the middle of a desk fan and it lasted a month longer than the other.

Still, poorly tested for flaws...Or maybe I just break things.

[NotFuzzyWarm]

As I discovered with my 7-port, 60W charging hub from Plugable -- pop it open and look at how the power is distributed.

On the Plugable, it takes 12vdc in and has 3 buck regulators taking that down to 5v  for the USB plugs. That said... 1 regulator feeds ports 1 & 2, the 2nd regulator feeds ports 3 & 4, the 3rd feeds ports 5-7. See where this is going?

After futzing around with 2x of the 2PAC's along with an original Compac just plugging them in 1-2-3 I was unable to run all 3 at decent speed without at least 1 stick dropping out. Looked inside the hub and found ^^ so...

Put one 2PAC on port-2, the other on port-4 and the Compac on port-6 so each stick has it's own 5v regulator. Now the Compac is back up to its usual 318.75MHz and the 2PACs are running 175MHz 225MHz giving a total of 65-70ish GHs pointed at solo.kano.org. Lovin' it

[mrbryceguy]

Hey man- you know your stuff! I am setting up a 2pac rig with with compacs, what USB port would you go for? I am having the same issue, the power is not evenly distributed through the power hub, had to swap them around- I will have 8 2Pacs and 4 Compacs- so I think I need a decent powered hub.... any ideas ?

[mrbryceguy]

would this eyeboot cut it of is it overkill?

https://www.amazon.com/Eyeboot-Port-Enclosed-Power-Supply/dp/B01MXK6K48/ref=sr_1_12?s=pc&ie=UTF8&qid=1488791245&sr=1-12&keywords=powered+usb+hub

[btckess]

I'm running about 200 watts on 10 sticks for 300gh. So I don't think that's overkill, could still use more lol. If you look at the left of my miner you'll see the kill-a-watt. It hovers between 180 - 205 watts.  But that also includes fans, hubs and pi's

https://i.imgur.com/nbc1aEN.jpg

[btckess]

So, an update, I underestimated the amount of power I would need by 2X. I have this power supply ordered (5v 60amp) to fix this.
http://www.ebay.com/itm/AC-110V-220V-TO-DC-12V-24V-5V-Switch-Power-Supply-Driver-Adapter-For-Led-Strip-/351769808694

Until then I split it into 2 miners each with its own power supply, pi, hub and 5 sticks
https://i.imgur.com/XAVfKFt.jpg


Other than upping the voltage on the 2 sticks with hw errors I'm pretty happy with this speed (1.48v at 300mhz)
https://i.imgur.com/A2EaOpM.png

[isoneguy]

would this eyeboot cut it of is it overkill?

https://www.amazon.com/Eyeboot-Port-Enclosed-Power-Supply/dp/B01MXK6K48/ref=sr_1_12?s=pc&ie=UTF8&qid=1488791245&sr=1-12&keywords=powered+usb+hub

I've got an orange 49 port eyeboot if you want to save a little cash on that.

[btckess]

Going along with hurricandave's suggestion of custom usb cables. I'm working on version 2 now, going straight to the jack this time. I hope I can cut down the power usage a little.

https://i.imgur.com/yX0uaBf.jpg

[sterone]

Will this hub be able to power 2pac?

https://www.amazon.com/D-Link-including-Charging-Adapter-DUB-H7/dp/B0000B0DL7

[ppetrovic68]

Will this hub be able to power 2pac?

https://www.amazon.com/D-Link-including-Charging-Adapter-DUB-H7/dp/B0000B0DL7

Yes, if you don't plan on running them over 100Mhz.

That hub will provide max 0.5A per port. Two fast charging ports can provide more power, but only if the hub is not connected to the PC/RasPi/whatever...

[lanegg]

Going along with hurricandave's suggestion of custom usb cables. I'm working on version 2 now, going straight to the jack this time. I hope I can cut down the power usage a little.

https://i.imgur.com/yX0uaBf.jpg

So you're running the beefy (24ga?) wires from power supply to the two outer posts on the USB connector and then the two inner data wires to the USB hub? Do the male plugs that go to the USB hub only have data +/- connected, do are you doing something with the 5v from that bus, too?

Would you mind providing a closer image of where the female ports connect to the wood supports?

I like this idea and may "borrow" it if that's okay with you...

[btckess]

Going along with hurricandave's suggestion of custom usb cables. I'm working on version 2 now, going straight to the jack this time. I hope I can cut down the power usage a little.

https://i.imgur.com/yX0uaBf.jpg

So you're running the beefy (24ga?) wires from power supply to the two outer posts on the USB connector and then the two inner data wires to the USB hub? Do the male plugs that go to the USB hub only have data +/- connected, do are you doing something with the 5v from that bus, too?

Would you mind providing a closer image of where the female ports connect to the wood supports?

I like this idea and may "borrow" it if that's okay with you...

Those are 18ga power wires on the outside and 28ga data inside.
I don't make them anymore. I make "upgraded" usb cables now.
They were too difficult to make and assemble and I didn't trust them.
I tested 10x patched cables against 10x homemade ends they didn't make much difference.
So now I just "upgrade" usb cables by cutting the power from the hub side, solder in 18awg wire powered from the meanwell.
and stick em in a plastic holder

https://i.imgur.com/2MCQ7VM.jpg

I made a post in the "I did it" thread with more info. The only real difference is I now cut the both power wires coming from the hub.

[lanegg]

Thanks!

So now I just "upgrade" usb cables by cutting the power from the hub side, solder in 18awg wire powered from the meanwell.
and stick em in a plastic holder

So for the last few inches/cm before terminating in the female plug you are running the thinner wire? What's the max amperage you have pushed through the connectors?

[btckess]

Thanks!

So now I just "upgrade" usb cables by cutting the power from the hub side, solder in 18awg wire powered from the meanwell.
and stick em in a plastic holder

So for the last few inches/cm before terminating in the female plug you are running the thinner wire? What's the max amperage you have pushed through the connectors?

yep it goes thinner as it gets to the female end. the usb cables i use are 28awg data and 24 awg power.
basic wire thickness from the power supply is ... meanwell  -> 16awg -> 18awg -> 24awg
 I have put 1.51v @ 300mhz which is about 2.8ish amps. But I am having stability issues so I don't know what i am going to run it at.

[lanegg]

yep it goes thinner as it gets to the female end. the usb cables i use are 28awg data and 24 awg power.
basic wire thickness from the power supply is ... meanwell  -> 16awg -> 18awg -> 24awg

Where do you do the split from 16awg to 18awg? I didn't see a distribution block in your pictures, is there one just off screen somewhere?

[btckess]

yep it goes thinner as it gets to the female end. the usb cables i use are 28awg data and 24 awg power.
basic wire thickness from the power supply is ... meanwell  -> 16awg -> 18awg -> 24awg

Where do you do the split from 16awg to 18awg? I didn't see a distribution block in your pictures, is there one just off screen somewhere?

I don't have good pictures yet. I'm still building it lol. Basically I "upgrade" the usb cable and then solder all 5 18ga wires from a "group" of miners to a single 16ga wire that i then run to the power supply. No distributions blocks just lots of solder and tape

if you look at it from the top you can see the clump of wire at the bend were 2 groups of miners come together that bundle of tape is where i soldered the wires.
https://i.imgur.com/32tVwBP.jpg

[lanegg]

I don't have good pictures yet. I'm still building it lol. Basically I "upgrade" the usb cable and then solder all 5 18ga wires from a "group" of miners to a single 16ga wire that i then run to the power supply. No distributions blocks just lots of solder and tape

Ratrod modding. I love it!

[swoosh]

I killed one with 3 futurebits.

and killed another with 4 du1's.

My "controller" was reporting power surging backwards along the usb 3 line into the computer. so I think it has a design flaw.

Great hub until the bed started smelling funny.

I guess in the defense of superbpag they might not be made to run in a 90-105F ambient room.

That's probably the issue- they dont have the best cooling features with just a copper fin and with so much power running through them something might've malfunctioned in the heat.

What is the best solution here? or any other hub suggestion for raspberry pi? Thanks

[swoosh]

Hi All,

I would like to build similar to this setup:

https://s21.postimg.org/fdfl4forb/miner1.jpg
Picture not mine. Thanks to owner

I will be using the items below:
* superbpag USB 3.0 70 watt hub - I saw on this thread
* 2pcs sidehacks 2pac usb stick
* artic fan
* raspberry pi 3

I would like to know if this will suffice to run for at least a year. Im doing this to experience only (not to ROI)

Also can I also attach the display, just like on the picture?

Thanks in advance.

[nuanicaj]

if you run them for a year, that would do nothing lol and spend  very little wattage.  I have 4 with my 20 port USB 3.0 with raspberry pi 3.0, pulling about 78watts.  that includes 2 usb fans.


I have links of the pictures on the subject of :

https://bitcointalk.org/index.php?topic=1848964.20