Dumb question

[B470]

Hi,

I'm newer on the coin mining, well with asic...

I've recently purchased two gc3355, I have one already setup using cgminer 3.8.5 and cpuminer(OC).

Now when I lunch cgminer but units will show up and connect to pool. The second device will just show rate, but not send or receive shares.

Thinking I messed up somewhere along the lines, of configuration of these two.

I would like to run both in dual mode, if possible.

I've already tried to generate cgminer.conf and edit that.

Nothing works 

Someone point me into correct direction?

Many thanks

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[JaredKaragen]

if you run each device alone;  they both will return shares?

What difficulty are you running on the device, and how many chips per device?


I have noticed when using multiple devices (10+), I would have to use usb hubs that power up each port one at a time....

If the hotplug feature is in your version of cgminer;  you should be able to plug in a new device once the first is up and going.

Also;  check power supply to the devices;  don't feed them not enough amperage.

[syrne]

ok

both work by themselves and both have identical power supplies, both tested.

I am thinking....I messed up the cgminer.conf, reason why is because when It would launch it would say, JSON fatal error. then abort process. Im not using a controller and both devices are sitting on com 2 and 6.

:/

[JaredKaragen]

I used cgminer 3.7.2 in windows

It had different config settings....

Code:

cgminer.exe --scrypt -o stratum+tcp://scrypt.mine.zpool.ca:3433 -u 1PHSDYvVp6HpqtuUPocK41DrdeHbbezaeP -p gridseed-1,scrypt --gridseed-options=baud=115200,freq=825,chips=40 --hotplug 5

This was the version that always worked the best for me.

With extra amperage available, you can run the GC3355 up to 1100mhz.  I typically ended up between 950 and 1000.   Chips setting is just for hashrate calculation in the app;  changes nothing but a value displayed on the screen.  Hotplug check on 5 sec interval.

Zadig the driver;  plug in one, start cgminer, then start plugging the rest in.

[syrne]

 

Thanks Sir!  I think the issue is this, the cord I had tested on both and each, is 12v but lower amp.  So therefore it works but does nothing. Good to know, feel like an ass.  But yeah, this is what its about, learning.

here is my script

cgminer.exe -o stratum+tcp://us-east.multipool.us:8888 -u yourworker.1 -p password --gridseed-options=baud=115200,freq=750,chips=5,modules=1,usefifo=0,btc=16 --hotplug=0

[JaredKaragen]

No prob.  some of the simplest mistakes can be some of the most problematic and annoying.

Glad you got it sorted.

Old PSU's from PC's (250w ish) are perfect for modifying to power gridseed devices.  I just remove the OEM looms from the mainboards, jumper the power line;  and solder barrel plug ended leads to the mainboard for clusters of orbs or blades.   A good way to have plenty of amperage at no cost if you scavenge a power supply.   99% of them all have markings on the mainboard for what is what, so its easy as pie to do.