Post
Topic
Board Computer hardware
Re: [IN-STOCK] Dipo Electronic 19 port USB hubs [As low as $130 usd each]
by
razorfishsl
on 27/05/2014, 02:27:42 UTC
Hello, at time all run good on port 14 (But two BFx2 miner run slower and I'dont know), so i have order a xtar USB detector a will test each port and will report you Wink



regards

Luckily it's only  $5us
There is an 'inherent flaw' in such devices, some require to feed the target device via a low value resistor and then compute the voltage drop across the resistor.
( in doing so they drop the voltage but also have to pass ALL the current from the measured device thru the measuring resistor…)

So don't take the results it gives too seriously , it unlikely to  report the details correctly & it may stand a good chance of slowing the miner down a little (due to current limitation)( But it may reduce the number of HW errors you get!!!!)

Also do not leave it plugged into the port permanently as it is likely to  overheat  & distort the plastic case.

There are better units available that do not use such limited ways to measure the current.


RF