elsupreme The USB sticks aren't the only thing you need to consider when trying to adjust amperage. Your USB hub and what each port can provide voltage and amperage wise is also very important. I have the Bitcoin Merch 7 port one and I can tell you it's not great. Just like others have said, it has power problems and each port is inconsistent. Then not only what each port can handle, but how much they can handle when multiple ports are used. For me, I can only achieve a stable 445Mhz @ roughly 2.4 - 2.5 amps per stick. I have found that each port resets at different max amp draw causing the plateau and this decreases with each USB stick plugged in with the first port drawing the most power and amps which takes away from each port as it gets farther away from the power source. Use the USB ampmeter so you can watch and tell at what max amperage does it plateau and from that, you can then tell your approx max freq you can use on that hub. That is the most likely case of your issue.
As for eyeballing to set the rest of the sticks off one, good luck. Each stick and USB port is different. So you are better off adjusting each one, one at a time. Otherwise you are either going to be under volting getting low hashrates or overvolting for the hashrates you are getting.
For anyone achieving 500mhz or higher, can you please let me know what your hardware setup is like and model of your USB hub?
Its pretty much what i did all day yesterday dialing up & down , looking at cgminer as it hits plateau and resets every few secs and looking at the values on the usb ameter as it responds to cgminer and to be honest, i dont even know what am looking for ... i just see the amperage go up until it resets when cgminer hits plateau ..
its been more like blind tuning & gambling, hoping to hit the target..
i believe there are measures to reach this..
this was supposed to be one of the fun part, i waited another 2 weeks for this final phase using the ameter to finally set up the rest of the sticks but its not at the moment ..
I have atleast one stick i did not tune because it already runs efficiently at the set hashrate without issues ...
I have tried to use readings from that one to see how to set the others but still ...
lots of us here have used the usb ameter to tune their sticks into stable hashrate, i need your inputs ...
Am I looking in the wrong direction ? Am I mising something ? If you keep dialing clockwise / anticlockwise, does it start all over from 0 after a 360 dial ? or it keeps going 360+ , 720+ etc ?
and sometimes while dialing, i hear a tini tiny fast beep with fast flashing light on the stick, is that a too high dial or too low dial signal?
this is the ameter i use
https://www.amazon.com/Voltmeter-Ammeter-Current-Multimeter-Suitable/dp/B08RHKVHJZ/ref=sr_1_29?keywords=usb+volt+amp+meter&qid=1647004125&sr=8-29#descriptionAndDetailsHow can i use the reference stick to setup the rest of them ?
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