Quote from: Jakegoodwin586 on March 19, 2018, 11:13:46 AM

Hi I have 6 fb ml2 powered by a block erupter hub. I can never get all 6 to mine. One always seems to drop to khs. Does anyone no why this is? They all work separately but a different one will fail each time they all mine together.
Also is there a way to program bfg miner on Linux to restart a miner if it drops below a hash-rate as it is not auto restarting. I have tried lowering the frequency but one will still start to drop hash rate after a while.
Thanks

Probably not enough power per usb port. Needs 2 amp minimum per port!

Quote from: AltScope on March 19, 2018, 10:33:02 AM

Quote from: BarTeam on March 19, 2018, 09:14:40 AM

Quote from: AltScope on March 19, 2018, 07:49:24 AM

...

There's a better deal... 13 port ones... 60W 2.1 A per port. Fits 7 MLDs at 700MHz

damn I already ordered the 10 port, oh well only got 5 of these on the way atm

Quote from: 0x03 on March 19, 2018, 10:10:15 AM

...
shameless self-reply: the 3 ASICs run stable at 900, when i point a fan at them. it's not USB bus saturation, it's temperature. waiting for the rest to arrive today, hopefully.

do these little guys get quite hot then? the hub i ordered has an Aluminium body hopefully help with heat dissipation

The 10 port 36watt will NOT be able to feed all 5 (you ordered 5, right?) MLD's. Sorry to dissapoint you but for most hubs these MLD's are just too hungry. Especially if you want to crank them up for a higher hashrate.

Mine have been hashing 21 hours at this moment, temps (with the fans on them) are between 32-35 and one runs between 43-47 degrees celsius. They are running at 900mhz. Amp draw varies between 2.25-2.4 amps.

I'm running them from this hub:
http://www.sipolar.com/page172.html?product_id=18&product_category=17
And will run maximum of 8 mld's on that. The hub is rated for 2.1 amp per port so i'm already stretching that a bit, but the hub itself is fan cooled as well and by only using 8 ports instead of 10 i'm guesstimating it'll work out.

Hope that'll help you and others with their setups. Also, when taking temps, be sure to measure at multiple points on the heatsink, the temps will vary greatly depending on where on the heatsink you are measuring and i feel that the slanted 'teeth' on the heatsink enable for some false readings when not being careful when measuring.

I just rebooted my bfgminer so i could turn up the voltage on 1 of the MLD's, they now all are running very nicely at 900mhz and hw error rate for all 3 now is about .5%! (the one i adjusted was almost 6%)