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

[sidehack]

Sounds like the common factor is your hub. It's probably weak, or at least has weak wiring for internal 5V distribution. When a new stick is plugged in, the current draw to light it up probably causes a sag on the internal 5V that trips up one of the three sticks.

Or there's some signal issue with your hub that's misbehaving with multiple USB2 devices (which these are).

Have you looked around to see if other people had problems with that model hub?

[1714919905]

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[1714919905]

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[pasuljeffreys]

Yeah, I was probably going to go with the 10 port hub a few on here seem to be using anyway... Looks like i`ll just have to make the switch sooner

Pj.

[nissarup]

I have the same Anker hub as you have. I cant recommend it. At least not for mining. I had trouble getting miners to work consistently and I had to replug them to get them started whenever I had to reboot. It also doens't work with Raspberry Pis.

I just bought the 10 port Sipolar hub. It just works. Both with the miners and the Pi.

[pasuljeffreys]

Perfect, looks like an earlier upgrade than planned it is then..

Pj.

[klintay]

I have the same Anker hub as you have. I cant recommend it. At least not for mining. I had trouble getting miners to work consistently and I had to replug them to get them started whenever I had to reboot. It also doens't work with Raspberry Pis.

I just bought the 10 port Sipolar hub. It just works. Both with the miners and the Pi.

yeah 10 port sipolar hub is nice, good build and quality. also is wall mountable. for 65 usd that is not bad at all.

[CreativeReef17]

I recently acquired a Block Erupter 49 port USB 2.0 Hub Rev 2.00 (Red board) to use with my 2PAC and Terminus pod that I purchased from sidehack as well as some miscellaneous USB miners.  Finding information about these hubs are more elusive than I imagined.  Does anyone know of a support thread or other resource to post my questions to?

1) Who was the OEM/Primary distributor for these back in the day?  Asicminer? Eyeboot?  Someone else?
2) The unit has what appears to be a 25A automotive style fuse.  Does that mean that is fused for 12V 25A?
3) 25A would only allow 500mA per port with only 500mA extra to handle startup surge.  Does that seem right?
4) Is it likely that the traces would allow more power than 500 mA if the board's total power rating is not exceeded?

More goal is to run more 2PAC and other USB miners as the price is right and I acquire them.  I should have asked what fuse was on the board since I have read about other 49 port Block Erupter hubs having 50 or 70A fuses.  Does it seem likely that I can run a few higher-power usb devices like 2PAC or Moonlanders on this board?

Thanks for any advise or pointers to better threads.

CreativeReef

[pasuljeffreys]

Entirely likely a noob question here but...

I have the siploar 10 port hub and 6 2Pac miners... When I had 4 in the hub, the time to payout (0.001 BTC) was 1 year, when I plugged the latest 2 in, it went up to 1 year 3 months!!!

The average usage ranges from 7GH/s - 16 GH/s on all 6, but it seem to not be helping in any way the output.

I also seemt o have no upload speeds now on the computer so wondering if I broke something or overloaded something?

Pj.

[pasuljeffreys]

https://i.imgur.com/Qk3Sud2.jpg

Old picture but this is still what I'm running. 10 Compacs on a single 10 port A-300 hub I believe it's a relabeled https://www.amazon.com/Sipolar-USB2-0-Bitcoin-Indicator-Powered/dp/B01K4LYX7U/ref=sr_1_1?ie=UTF8&qid=1486327095&sr=8-1&keywords=sipolar+A-300

$5 Purex 120mm case fan using a home made dc barrel to molex adapter 12vdc wall wart powering a $5 evercool single fan controller.

RasberryPi3 is now updated with Pixel and I followed Jake36 post to install novak's cgminer-gekko-rev2.

What is your transfer throughput like? AQre all those 15 Gh/s miners? I am having issues with 6 not sending any more than 45 Gh/s on average through...

Pj.

[marousi]

"10 Compacs on a single 10 port A-300 hub" - can you run these (all 10)  at 325 mhz on that hub?

[jsays]

"10 Compacs on a single 10 port A-300 hub" - can you run these (all 10)  at 325 mhz on that hub?

Probably not.

If memory serves, that guy is 60W...so if running all 10 is the goal, you'd be looking at ~150MHz ea. And, that's only if you can get the Vcore dialed in near just right across all 10.

I think you'd be better of trying to get ~5 running at 250MHz ea. on that hub.

Good luck.

[hurricandave]

Those were 10 single chip Compacs running at default freq, the hub was powered by a 7amp brick that I had left over from the failed U3's disaster of Bitmain's. The fan had it's own small brick for power as did the RPi. The weakest link was the RPi which would randomly lockup and have to reboot.


Unfortunately, even though I had surge protectors on all of my gear, the building was struck by lightning while I was at work. The surge took out all five of my desktop PC's and monitors. The low voltage afterwards that my 2 S7-LN's, these 10 Compacs, and 10 2PACS were connected too caused the main 110v A/C line to melt and destroyed most of the gear including the ceiling fan in the room which turned out to be on the same circuit.

[gvb]

Mornin',

A few years ago I bought one of these cheap usb hubs:

https://www.ebay.com/itm/7-Port-USB-Hub-AC-Power-Adapter-ON-OFF-Switch-High-Speed-For-PC-Laptop-MAC-/232257938944

Yesterday I added a 5V/2A (phone charger?) power supply to it which seems to work fine.

When I plug my 2Pac in it it's up to 7 times faster than plugged into the RasPi3 directly.

But when I plug in a second 2Pac this second one becomes active and the first one seems to drop in speed and the blue/white led stops flashing.

Can these cheap hubs be modded with some wiring to have more power on the ports?

[gvb]

I've opened the hub and took a photo of it.

https://www.dropbox.com/s/0f99tdd1jm40c4s/pcb_usb_hub.jpg?dl=0

[in2tactics]

...
Yesterday I added a 5V/2A (phone charger?) power supply to it which seems to work fine.
...
But when I plug in a second 2Pac this second one becomes active and the first one seems to drop in speed and the blue/white led stops flashing.
...

Your power supply is too weak. At the very best, you are going to get 10W out of that power supply, but likely much lower. One 2PAC can pull over 10W depending on your settings.

[mhyde71]

ok so struggling here a little bit

i bought one of these under the advisement of a buddy- he is running 10 moonlanders in one of these and said for me to get one to run my five 2pacs

https://www.amazon.com/USB-2-0-Hub-Aluminum-Mounting/dp/B076HLY2L9

but its not working

is it the hUb?? or is it something else going on??  its a powered mining hub, so why isnt it working
my guess is that not enough power being supplied??  

I have the 2pacs running just fine if i plug direct to usb on computer - but as soon as i use hub- forget it- nothing working and no miners mining

please help

[sidehack]

I'd talk to your buddy who already has a working setup. The biggest difference between 2Pacs and Moonlanders is the required USB driver, but hardware good for one should be good for the other.

[klintay]

I recently acquired a Block Erupter 49 port USB 2.0 Hub Rev 2.00 (Red board) to use with my 2PAC and Terminus pod that I purchased from sidehack as well as some miscellaneous USB miners.  Finding information about these hubs are more elusive than I imagined.  Does anyone know of a support thread or other resource to post my questions to?

1) Who was the OEM/Primary distributor for these back in the day?  Asicminer? Eyeboot?  Someone else?
2) The unit has what appears to be a 25A automotive style fuse.  Does that mean that is fused for 12V 25A?
3) 25A would only allow 500mA per port with only 500mA extra to handle startup surge.  Does that seem right?
4) Is it likely that the traces would allow more power than 500 mA if the board's total power rating is not exceeded?

More goal is to run more 2PAC and other USB miners as the price is right and I acquire them.  I should have asked what fuse was on the board since I have read about other 49 port Block Erupter hubs having 50 or 70A fuses.  Does it seem likely that I can run a few higher-power usb devices like 2PAC or Moonlanders on this board?

Let me have a think....Red board is one of the originals from first batch! Thus is uses the 25A as 0.5 amps per port was all the block erupters needed.
Newer boards have 50A built in fuse now.

[CreativeReef17]

Let me have a think....Red board is one of the originals from first batch! Thus is uses the 25A as 0.5 amps per port was all the block erupters needed.
Newer boards have 50A built in fuse now.

Thanks for the information!  Will the board allow for higher wattage per port if the total power drawn is below the 25A?

CreativeReef

[lotwana]

I got the Plugable 7 port 60 hub powering my RPI along with 3 2pacs running @ 200MHz with a small USB fan, any idea how many kWh I'm looking at?

[klintay]

Thanks for the information!  Will the board allow for higher wattage per port if the total power drawn is below the 25A?

yes it should do, you could even change the fuse if you wanted to.....for the new 50A boards you can check them out here:

https://www.eyeboot.com/block-erupter-49-port-usb.html