Bitcoin Forum

I have a Gridseed Orb which does Scrypt and SHA256 mining.  So far I've only got it to go Scrypt and trying to get it to do Sha256. 

I know that scrypt batch files have the --scrypt switch but should a SHA256 have its own switch, or is that just default? 

Is this the usual syntax for the URL section?  stratum+tcp://domain:3333 or are there other variations?

Is there a type of memory in the device that needs to be reset by turning it off and on if you are going from one mode to the other, or even running a bat file?  Or, does it reset itself each time you call the executable of the miner you're using?

I did just get it to work by using a better BTC file and tweaking it.  It's nice to see Gh/z in the screen instead of Kh/Z. 

be really careful of overheating it.

Thanks.  Mine still has the fan but I'll see what else I can do.   Maybe set it differently? 

I am not getting a lot of lines saying accepted and ending with 0's which I take to mean an effective mining operation.  I'm getting "Network diff set...." and "Stratum from pool...." almost 8 to 1.  Is that a sign of the pool having an issue or is that possibly meaning my .bat file should be tweaked?

I think that's because blocks are going too fast for your ASIC. It doesn't create shares quickly enough.

Could it also be a sign that my Internet bandwidth isn't high enough?  I don't have one of the higher rates because I haven't needed it and I have three machines online.

you need very little bandwidth. i have 1.5 megabits per second and have no problems.

I have connected better going straight with an ethernet cable but told that I might do better adding a "'--dual' switch for sha256."

I am not sure what that is after looking around for it.  I notice that some dual mode ASICs have a small physical dual switch on them but I don't need
to do that. 

Is this the first part of the bat file with it?

Something like this? (which doesn't work)

cgminer.exe --sha256  stratum+tcp://us2.host.org:3333 

The Gridseed GC3355 was a very marginal performing SHA256 miner even when it was first released, at this point it's so far behind the times I doubt you could ROI one on FREE power.

 On the SCRYPT side, it was the ORIGINAL ASIC for Scrypt and it's break-even even now at around 4c/KWH electric cost, but will probably become unprofiitable on anything but FREE electric in a few months once the Innosilicon A4 starts deploying in enough quantity to drive the hashrate/difficulties up.


 The big difference is that Scrypt has proven to be a lot harder to achive super-high hashrates on vs SHA256, and has a lot less competition on building ASIC for it, so the older ones have had a lot longer chance at mining profitability than anything SHA256 has ever had the chance at because the relative efficiency of newer units isn't kicking up by 2-4 times a year (SHA256 in the last year has gone through 3 generations at about double the efficiency each time, Scrypt hasn't had a generational change in over a year).