Quote from: Nemo1024 on August 15, 2013, 08:26:03 AM

Quote from: dave111223 on August 15, 2013, 03:16:53 AM

Hooked up 100 USB miners, using 2 raspberry PI.

In my testing each raspberry can only handle about 45 miners, after that the additional miners just don't get detected. However after you get into the 35+ range you start to get a much higher rate of HW errors.

So I had to split the miners 34 per raspberry and 32 on my desktop, got another raspberry in the mail, so will run 3 total to handle all 100 miners.

Currently cooled with just a standard room fan, but the rig really doesn't run that hot so I think I'll replace that fan with a small USB fan for each hub.

Dave, could you re-post your entire message in this USB hub thread as well?
https://bitcointalk.org/index.php?topic=253749.0
What's the amperage of the AC adapter that you got? I have Sipolar in a "beware" section, as it got some negative reviews.- Might consider moving it into the regular table...

I have only 1 Pi and 30 BEs, which all ran nicely through 5 D-Link hubs.
https://bitcointalk.org/index.php?topic=253749.msg2903723#msg2903723

I await 30 more from Canary, and then will try to run them all from the same Pi. If it does not work, as you post seems to indicate, then I'll just run them off a PC, which is up 24/7 anyway, while I'll use Pi for other fun stuff.

Oh, and seeing as Pi's chips were rather hot to the touch, I could not resist adding some cooling:

The supply I received was 4.5a 20v. Also note: 100-240 Input with a Chinese prong adapter.