It look liked interwined strips of foamy material to me, and maybe my memory is playing trick on me but i thought thats what the guy in the video called it.
I'll have a look at all the sizes and things i will need in a bit, i'll probably have the time again to do... well... anything, starting from next Monday.
Most of the commercial evap media is made of a cardboard-like material, you'll also sometimes find it made out of wood, but in general I think that's more for consumer machines. Never saw any made out of foam, but have seen some made out of a kind of mesh plastic - but since all the commercial units I've seen use cardboard, that's my choice - spend a couple bucks more and just get commercial-grade evap media, it's all pretty cheap anyway (plus check eBay or Zoro). The other variable is how thick the media is - the thicker, the better - the more cooling it will provide. I typically use 4" (plus it's perfect when building stuff with 2x4's) media whenever possible, although my direct-indirect unit uses 4x 8" thick media, and it really does a great job. So do you like, cut 4 square of 4x5" to fill the 20x20x4 area of the 2x4 in a box build? Also if you ever posted about the project with pictures on this forum, do you have a link? That could be pretty cool. |
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I might need to re-read everything. There's a foam that absorb water, about 20x20inch of it, to blow the air through. If you come by a link, that would simplify the matter.
Are you talking about the evap media? Like this: http://amzn.to/1NZUGDEThis is what you should be passing the water over, not foam... It look liked interwined strips of foamy material to me, and maybe my memory is playing trick on me but i thought thats what the guy in the video called it. I'll have a look at all the sizes and things i will need in a bit, i'll probably have the time again to do... well... anything, starting from next Monday. |
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OK now it made me to think a lot, halving will happen in about two month or so right?
If it would happened in 1 year or so I would be buying miners right away, but now it's little confusing to me. If I was counting on ROI for 10 month~ now it became twice as large if the price will be same after halving.
First I was thinking to buy 15-20 units, after that I saw halving is so close I thought 5 units would be better choice as Phill said, but now I'm confused. Mine or not to mine..
Any advice would affect the decision I will make in next few days
Even in the former case, it was a horrible investment. ROI in 2-4 months or you do not do it. |
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Selling a SP20 for 0.18 is stupid, I would sooner throw them in the garage for 100 years and sell them as antique
Why are you selling the miner? Because it doesn't make much money anymore. Hence there is no demand for it, hence prices are low. If you wanted 0.75BTC you should of sold it back in Nov-Dec when bitcoin was $500 USD. If you want someone to blame, blame Bitmain for selling the S7 for only $500. Or blame Satoshi for making the Bitcoin halve. No point in arguing with OP. They're sold for less than 100 euros in his region, he just isint aware of the massive price drop. |
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Thanks, what about picking the right foam? I'm guessing some kind would get moldy after a while? Or is that unavoidable?
Are you talking the structural foam I was talking about for making the plenum/channels for air? If so, it's just the big foam insulation sheets from Home Depot... As far as getting moldy, if you're running the evap at the right flow level, it shouldn't increase the humidity that much - you typically only have that issue if you're running too much water over the media and it's splashing everywhere, etc. There's generally also not that much benefit over running more water - the key is to moisten the media enough so there is a thin sheen of water on it - the trick is it's the hot air moving over the thin layer of water, causing it to evaporate that makes the temperature drop. Otherwise you could just fill a bucket with water and blow air over it to get the same effect.  In a perfect world, the less water that comes out the bottom, the better, but you still want the media at the bottom to be fully saturated. One more thing worth noting, typically you'll want to start the pump and 'prime' the media with water for probably 30 mins or so before starting the fan, so it has a chance to fully saturate. I might need to re-read everything. There's a foam that absorb water, about 20x20inch of it, to blow the air through. If you come by a link, that would simplify the matter. |
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Bought these. They're running well. Virosa is a trustworthy guy to deal with.
Thanks for buying them. Its simplifying my new deployment by that much.  |
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I loved my S1s in the winter. I used either no fan or a 100% silent fan, undervolted, underclocked, 1W/GHs fully quiet heater that pay its own electricity.
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Thanks, what about picking the right foam? I'm guessing some kind would get moldy after a while? Or is that unavoidable? VirosaGITS, check your mining with oven thread in the other section.
Yes, but it involve a new circuit and lots of A/C. However i haven't been able to get myself an Oven yet so using both at the same time is a bit moot at the moment.  |
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Hi guys ! first fuck paypal service ! but I need to get one to be flexible in the net I need your advise on how to get full functional paypal account ! Which place shall I open an account to send /receive money without been verified For whom who is from other less Tiers may know what I'm talking about. there is a huge discrimination in Paypal policies over countries trully hope in the near Future Bitcoin will erase this shit from web surface till that time I need your help  Thanks in advise Whats the question? The methods to become paypal verified are pretty clear. Until then you won't have access to much. |
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I've got both asrock and biostar mining motherboards available with cpus.
I'd be interested in prices and which mobo/cpu for the Asrock line. Nothing against the Biostar, but i did not research those. And also shipping from where. The Biostar is a bit nicer, look it up: Biostar H81S2 I think $150 per mobo + CPU + heatsink would be a good price? Ships from Montreal area. Sorry, i been very busy. I can get 6 slots mobo + cpu for 150 CAD, shipped from retail. |
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That's uhm, REALLY cool. No pun intended. I could probably build some of these at some point. The problem i have right now is sourcing box fans like these that don't vibrate and make annoying noise.
In Canada i can only find the one i want at like 60-80$ (nuts).
Anyways i may find the time to do this during summer. Though for now i need something quick i can buy that will help with the cramped space in my "server room".
So any suggestions for something good (and maybe quiet) that will do the trick online and get here fast would be good.
Ah, looking over at Amazon.ca, I see what you mean - they all have brutal shipping charges, that sucks. The one thing to keep in mind is that I imagine when you run a box fan off something like the first video, you'll probably be running it at it's lowest speed, so vibration and noise really shouldn't be that big an issue. You can also just design around whatever fan you CAN get easily and cheaply, that's one of the advantages of rolling your own. TBH, the quality you're going to get building your own is going to probably be much higher than if you buy one of those consumer-ish things - most of those work like crap and aren't even worth the money. You might also check Craigslist - I can't speak for where you're at, but where I am there's probably well over 50+ box fans for sale on there right now, most asking ~$10. There's also a ton of evaps as well, but they probably aren't as common where you're at. I didnt have much luck, so i might take my chance with whatever Home Depot or Canadian Tire has. I'm interested in making the home made Evap cooler, any place Online i might be able to get what i need for cheap, shipped to Canada? I'd guess i'd need the tubing, the pump and the foam thing that will be soaked in water. I can get the wood, nails, fan etc easily i think. Though i'm not sure what to buy/use for the basin. how about a cement mixing tub? http://www.homedepot.com/p/Medium-Mixing-Tub-887101A/202086173I don't know what store you can find it in Canada ,but these are sturdy and low cost. Thats a pretty good hint, thanks. I been busy with relocating the mine. But if someone know where/what to order online for the pump, tube and foam, i'd like to hear it. I bought the 2x4 wood while i was at Home Depot the other day and i got some box fans that don't vibrate like an old dildo. |
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That's uhm, REALLY cool. No pun intended. I could probably build some of these at some point. The problem i have right now is sourcing box fans like these that don't vibrate and make annoying noise.
In Canada i can only find the one i want at like 60-80$ (nuts).
Anyways i may find the time to do this during summer. Though for now i need something quick i can buy that will help with the cramped space in my "server room".
So any suggestions for something good (and maybe quiet) that will do the trick online and get here fast would be good.
Ah, looking over at Amazon.ca, I see what you mean - they all have brutal shipping charges, that sucks. The one thing to keep in mind is that I imagine when you run a box fan off something like the first video, you'll probably be running it at it's lowest speed, so vibration and noise really shouldn't be that big an issue. You can also just design around whatever fan you CAN get easily and cheaply, that's one of the advantages of rolling your own. TBH, the quality you're going to get building your own is going to probably be much higher than if you buy one of those consumer-ish things - most of those work like crap and aren't even worth the money. You might also check Craigslist - I can't speak for where you're at, but where I am there's probably well over 50+ box fans for sale on there right now, most asking ~$10. There's also a ton of evaps as well, but they probably aren't as common where you're at. I didnt have much luck, so i might take my chance with whatever Home Depot or Canadian Tire has. I'm interested in making the home made Evap cooler, any place Online i might be able to get what i need for cheap, shipped to Canada? I'd guess i'd need the tubing, the pump and the foam thing that will be soaked in water. I can get the wood, nails, fan etc easily i think. Though i'm not sure what to buy/use for the basin. |
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Yeah 1 board is down.
I would reset my freq from 700 to 675 set my fans to 50% boot.
Wait a bit and then see if I was at hash of 4600 fan speed of 3600-3800 rpm check error rate under .0050 lastly check my temps under 63
Looks like I am now having the same problem with my miner. How much time should you wait with lower freq? And other things that can be done if this does not correct the issue? Thanks Its just to see if its the PSU being an issue. If you reboot with low freq after a power cycle and it still does not work, then barring something obvious missed, a board is probably having some issues. |
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If you're even a bit handy, you can really easily build a cheap/decent evap to test things out - and it will probably work substancially better than the one you linked to. Here's a youtube showing a decent build: https://www.youtube.com/watch?v=J_ubf0zqvSQor another popular one: https://www.youtube.com/watch?v=aHbQYajfGqMThere's very little to evap coolers, basically just a pump, fan, water reservoir and media. You can probably build everything from the first video for under $100, and the second video for even less (but it won't work as well). That's uhm, REALLY cool. No pun intended. I could probably build some of these at some point. The problem i have right now is sourcing box fans like these that don't vibrate and make annoying noise. In Canada i can only find the one i want at like 60-80$ (nuts). Anyways i may find the time to do this during summer. Though for now i need something quick i can buy that will help with the cramped space in my "server room". So any suggestions for something good (and maybe quiet) that will do the trick online and get here fast would be good. |
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I'm moving there next Monday and before i start running test its going to be hard to say. Most likely if possible i will want a setup with the room closed and seal on its own circuit, hopefully with evap cooling, so that the noise coming out of it, with acoustic panels will be nil.
Make sure that where-ever you live, the humidity is low enough to make evap practical - otherwise it's just a waste of time. Most evaps are really low noise, as the only two components are the water pump and the air handler, with AC the loudest noise is usually the compressor... Well its near here. Humidity is anywhere from 10% to 100% here lol. So on humid day i'd need A/C. What kind of job would this do on dry day?; https://www.amazon.ca/NewAir-AF-1000W-Portable-Evaporative-Cooler/dp/B00KOHMSHW/ref=sr_1_2?ie=UTF8&qid=1461319060&sr=8-2&keywords=evaporative+cooler |
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Seem like people are starting to offload GPU's, so i figured i'd bump this up.
Yeah, I envy you. You got really lucky with that 7950 you quickly snatched up in the other thread for like $80. I didn't get it, his shipping estimate ran up to 40$ and from the US it would take a while to get here. Still a good price but, meh. |
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I'll trade a gigabyte 380 4G for the sp 30.
Do you have an r9 390? Also, I just realized something... how does "a trade" work on here? How does escrow work with a trade? I may have to take the trade part off my post, if it is not feasible with escrow services. alobodys Collateral can be held by the Escrow. |
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I have the same cover, but it seems to push cold air inside, not suck warm air out.
That would probably be a poor design? (If its "Cold air") I mean we're in Canada and it get cold, so you'd want those 1 way flap to allow air out but not winter in, because those gets pretty damn cold ^_^" At some point i was able to pull a bit of air, from i assume surrounding appartements during summer, however. So it was 20C~ air, not Cold, but it wasn't too bad either. (Had both windows in the living room to output ASIC heat) Mostly though it was a HUGE draft from my bed room if i ever dared to open that window. |
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Seem like people are starting to offload GPU's, so i figured i'd bump this up.
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If you buy a server 2980 platinum or a 2880 silver server psu
They cost at least 100usd less. Can run 2 s-7's
Running two S7s @ 1400w each means you are running 2800w on a 2880-2980w PSU. You really dont want to push power supplies to nearly 100% of their rated power, server class hardware or not. Thats more like 90% load, and plenty of server grade PSU are designed to run at 100% load, which is DC, not AC. |
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