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Servers : stratum.antpool.com:3333
User    : username.worker or username_worker - auto creates workers!
Password: anypassword

Servers : stratum.btcguild.com:3333
User    : username_worker
Password: anypassword

Servers : us1.ghash.io:3333
User    : username.worker  - auto creates workers!
Password: anypassword

Thanks for this

Will the EVGA 1300w work for this or is it too close to being maxed out all the time

It will work fine.    do you realize the sp20 works far better at 1200gh to 1400gh hash rates?

If you run at 1350gh it costs 750 to 800 watts

If you run at 1650gh it costs 1200 to 1225 watts

Even if you are a free power guy.  try running them at 1400 to 1500gh  as  the 1650 to 1700gh speeds are redline speeds.

 I run 8 of them in my home all around 1200gh. They use under 600 watts at this speed.

How is the performance in a moderate temperature environment?

eg  -6 to +6 deg C

It improves slightly, and  it does not like a 35c room it does a little worse.

I keep my noisy miners in an outdoor shed. Are you saying i will get better than the advertised 1700ghs at 0deg C ?

If so, thats great. any way to get group buy price without rewarding RS? Not interested in supporting people or companies that feel the need to troll others` threads to promote their own products, that behavior reeks of insecurity about something.....

 looking for about 16 new miners

The SP20 usually achieves more than 1750 GHs in 0C, assuming enough power. It's not very efficient machine at those levels, around 1250-1300 Watt at the wall with good PSU. We do have ASICs variations, the new ones are better.
You don't need to pay the reservation fees. Only 40% are going to RoadStress. It's recommended to do so.

no above 1650 is redlining the miners.  and it burns a ton of power.  efficiency drops like a rock.  If you have them in a good room and you have cheap power

run around 1500gh  check power draw. then try 1550gh check power draw. then try 1600gh check power draw.  decide if adding 50 or 100gh is wroth the extra watts.

Hint it really is not for almost all of us.

After about 30C you start to lose full hash rate, 35C you're going to have lost full hash rate, 40C then you're down to 1.35TH or so.

Hey guys,

I got my 3 SP20 Jackson's about a week ago and i love them, since they were in my living room - I only ran them at night, now I moved them to an empty room. So when i came home today and power on my rigs, i could not connect to myminer.io. Is Spondoolies-tech server down?

Thank you,

As far as I can tell, myminer.io is a local service hosted by your miners - so if you can't connect then they may not be connected to your network. Sometimes you'll see a fragment or old version of the page when no devices are connected. How are they connected now?

Please consider filling out a quick survey about my guides to help improve them! You'll be entered into a raffle to win 2x $20 vouchers as a thank you.
https://i.imgur.com/AXm1t8k.png
                              https://i.imgur.com/Rv2FyH4.png (http://goo.gl/Fkq40s)

yeah .. hosted by your miners ..  and you reviewed how many SP-Tech products?

Domain : myminer.io
Status : Live
Expiry : 2015-03-17

NS 1 : b.dns.gandi.net
NS 2 : c.dns.gandi.net
NS 3 : a.dns.gandi.net

Owner : Guy Corem
Owner : Spondoolies-Tech Ltd
Owner : Leshem 1, P.O.B 8673
Owner : Kiryat-Gat
Owner : IL

I didn't describe it well.... there is a component of that site which appears to be a local service. Hence the ability to get fragments from crashed units (if they're the last ones) still showing. If it was entirely remote then surely they wouldn't show up.

Please consider filling out a quick survey about my guides to help improve them! You'll be entered into a raffle to win 2x $20 vouchers as a thank you.
https://i.imgur.com/AXm1t8k.png
                              https://i.imgur.com/Rv2FyH4.png (http://goo.gl/Fkq40s)

which one of those SLOTS labeled as 1,2,3,4 are the slots that power the back chips ?
Thank you !

What do you mean by that bit?

which of those 4 slots power the back chips ?
2 slots power the 2 front boards and the other 2 slots power the back boards

I lost the login info. Is there way to reset the SP20 to factory settings?

There is a reset by sd card.  I would assume it would go back to default after.

Like this?

http://www.spondoolies-tech.com/blogs/technical-blog/13098521-sp10-sp30-recovery-sd-card-boot-sd-card-creation-instructions

Ok, that did it.

Hard to tell. Usually connector 1 & 2 or 3 & 4 is in parallel. From the picture it seem not parallel.
I don't own sp20 so i can't tell, but if you had multimeter, you can measure the connectivity between connector 1 & 2.
 

excellent post sir!

You just won the internet  ;D

1&2 powers one ASICS board 3&4 powers the other ASICS board

I think the back is the one near the fan, since the fan pushing air out, so it make sense the chips near the fan
get the hotter air from the front chips (which is nearer to the power connector? Make sense?
 
and #2 and #4 are the one connecting to the back

sorry im a n00b here... is this why OP said to use two 750w PSUs? in the quickstart video from the manufacturer available on youtube they mention you can use two PSU instead of one but that it will run at half the hashing rate if it is being supplied half the power demanded (1200w). i am still considering getting the evga 1300w psu and connecting this for a full 1300w but the difference between 1350 and 1650 seems quite nominal for the decrease in power bill...

I would just go with Evga 1300 personally, and that is what I did.   It's a quality psu and can be sold or used later projects.   I ROI'ed on mine... and they came in handy for ether project.   

But yes some do run two 750 server psu's due to price.  Just make sure to do 1 psu per hashing board, don't mix the PSU's power on a single hashing bard.  But honestly 1 PSU is just easier.

thank you... actually i bought the two 750's and connected just one up and it seems to hit 1300-1400 pretty often as someone here mentioned in one of the early posts. the particular one I have keeps restarting cgminer (might just be a less than perfect device that i acquired) and it hasn't run a full uninterrupted 24 hours I have come back to where it is located and just seen it completely off. It hasn't tripped the circuit because the wifi bridge it is connected to still has power... I am thinking maybe it keeps hitting 80C and therefore shutting itself down. I am going to stick it in a more well ventilated area and swap out the 750 for an 850 in the hopes for more stable 1500TH/s ranges.

If you have the CX750M, running it in anything but room temperature ambient will cap its maximum power pretty strictly at 750W before it gets overwhelmed. When I'd put mine in the hot boxes they'd start throwing out at about 35C with max load.

ya i am using the cx750m as linked in the setup guide.. it does get a little hot in the room the device is in but its not that bad. i jst moved the PSU to below the sp20 rather than above, maybe this will prevent it from overheating, hot air rising and all??

I run SP20 with HP 1200W platinum PSU for similar price as CX750M, it has no ATX cable, takes 10% less elec. and sits comfortable on top.

https://farm2.staticflickr.com/1563/26009203023_302344683b.jpg (https://farm2.staticflickr.com/1563/26009203023_129cbd73bb_h.jpg)

i was running the sp20 with the evga1300 psu for a couple days and it was running stable and hashing 1700 peaking at 1800 at times.. but after also adding an antminer s5 requiring 750w i couldnt keep them running together without tripping. after dropping the sp20 to the cx850 psu i am steadily getting ~1500 from it and able to run the s5 in conjunction and power seems to be running stable. with the s5 pulling in ~1100 this is so far a pretty nice combo. the 1300w psu i will save for when my s7 arrives. ive been curious... i've been seeing people who have pretty massive rigs which look like they are non-commericial residences... how are they able to not have circuits blow? mine seem unable to power above 1600w continuously on the same circuit...

They're most likely using 220 volt circuits.

110 volt circuits with a 15 amp breaker can only handle about 1400 watts continuous draw  ;)

You could swap the breaker to a 20 amp one BUT,you can overheat your wires or outlets doing this.DO NOT DO THIS!!!!

Definitely do NOT do this, your home insurance would be invalidated immediately while putting your life at risk. If unsure then consult a qualified electrician about the possibility of adding a 220V circuit.

Hi

I purchased a used SP20 and did not receive it with user name or password so I can't get into it. I would like to restore it to defaults but the Spondoolies support web page is gone now can anyone tell me how to do the factory default?

Thanks
Randy  ???

https://web.archive.org/web/20151217115908/http://www.spondoolies-tech.com/blogs/technical-blog/13098521-sp10-sp2x-sp3x-recovery-sd-card-boot-sd-card-creation-instructions