Bitcoin Forum

Bitcoin => Hardware => Topic started by: 1l1l11ll1l on June 20, 2012, 05:46:01 AM



Title: For all your USB Needs
Post by: 1l1l11ll1l on June 20, 2012, 05:46:01 AM

http://www.thinkgeek.com/images/products/zoom/eecf_mondohub.jpg


http://www.thinkgeek.com/computing/usb-gadgets/eecf/


Title: Re: For all your USB Needs
Post by: arklan on June 20, 2012, 06:15:19 AM
yea, when i saw this is the newsletter yesterday (from thinkgeek that is) i imediately wondered how good it would be for a batch of FPGA's.

course with that many cables ya'd need some sort of ducting just to handle then all and keep them untangled...


Title: Re: For all your USB Needs
Post by: rjk on June 20, 2012, 02:17:16 PM
Wow it's $90!  :o


Title: Re: For all your USB Needs
Post by: crazyates on June 21, 2012, 01:31:39 AM
The power adapter is only 5V @ 4A. That's only ~20Watts. How much power from your typical FPGA is taken from the USB port itself?


Title: Re: For all your USB Needs
Post by: arklan on June 21, 2012, 02:45:31 AM
The power adapter is only 5V @ 4A. That's only ~20Watts. How much power from your typical FPGA is taken from the USB port itself?

to my knowledge, none. they have seperate power usually, since they each need about 20watts. i'm going off what i've seen/read here though.


Title: Re: For all your USB Needs
Post by: AndrewBUD on June 24, 2012, 09:36:00 PM
It looks like a switch..... I doubt all USB ports can be used at one time.


Title: Re: For all your USB Needs
Post by: Morblias on June 25, 2012, 12:19:31 AM
would something like this: http://www.ebay.com/itm/NEW-10-PORTS-USB-HUB-2-0-High-Speed-w-Power-AC-Adapter-For-Laptop-PC-Computer-/330751373955?pt=US_USB_Cables_Hubs_Adapters&hash=item4d02517283#ht_3471wt_1396
work good for 8 asic's? just planning ahead in case BFL delivers in October.


Title: Re: For all your USB Needs
Post by: arklan on June 25, 2012, 12:56:54 AM
until we know the actual power draw the jalepeno's need from the usb port, it's a guess. but since that is a power hub, it should suffice. again, guessing though.


Title: Re: For all your USB Needs
Post by: seriouscoin on June 25, 2012, 01:05:37 AM
beware tho, many USB hubs are infact daisychain internally.... and some USB controllers dont like that.


Title: Re: For all your USB Needs
Post by: rjk on June 25, 2012, 01:50:08 AM
beware tho, many USB hubs are infact daisychain internally.... and some USB controllers dont like that.

Yeah, I'm guessing (hoping?) that they had the foresight to build in a connector for external power.


Title: Re: For all your USB Needs
Post by: Cablez on June 25, 2012, 02:18:42 AM
http://www.thinkgeek.com/images/products/additional/large/eecf_mondohub_power.jpg

It looks like 4A extra.