[CLOSED] ASICMiner Prisma 1.4th/s - 1.47 BTC

[GrapeApe]

If this is the case see above where I say I can't type "-" while in the RPi (minera) terminal.

Can you input the "-" character into anything?  Does it work in an address bar or text editor?

Yep everywhere else it works fine. Including the terminal on my Ubuntu machine.

[TracerX]

If this is the case see above where I say I can't type "-" while in the RPi (minera) terminal.

Can you input the "-" character into anything?  Does it work in an address bar or text editor?

Yep everywhere else it works fine. Including the terminal on my Ubuntu machine.

Yeah, there's no reason I can think of that it should accept it--it's a pretty commonly used character in the terminal.  I was trying to determine if it was a keyboard error, but it's obviously not!

Do you have a ~/.inputrc file?  Can you post the contents of that here?

[CrazyGuy]

I got my last shipment in thanks Crazyguy.

I have never used a RPi  before and while I'm waiting for the USB adapter I wanted to test it out on an old Jalapeno. I'm coming up blank on this. I keep getting the minerd isn't running error. I changed to the official CGminer via the settings page and added pool info. I don't need to go into the terminal and build the miners do I? The ones showing up in the GUI are already built right? Also while in the terminal I can't type "-" or "_" does anyone know why this is?

EDIT: Well I'm an idiot I forgot to add the port to the pool url. Good God...

But now It says no devices found. Do I have to configure CGMiner for BFLC (remember I'm testing it on a Jalapeno)? And if so how?

"build_miner.sh  cgminer  ./configure  --enable-bflc"

If this is the case see above where I say I can't type "-" while in the RPi (minera) terminal.

Yeh, cgminer has to be compiled with bfl support. All of the build options are within the build_miner.sh file, you can't pass them to the script like that. You'll need to edit it with nano. Also, don't you need to pass a bfl clock rate parameter to cgminer at startup? I don't remember for sure, it's been a long time since my Jalapeno has been plugged into anything.

You can set startup parameters in the miner configuration page of minera.

[GrapeApe]

Yeh, cgminer has to be compiled with bfl support. All of the build options are within the build_miner.sh file, you can't pass them to the script like that. You'll need to edit it with nano. Also, don't you need to pass a bfl clock rate parameter to cgminer at startup? I don't remember for sure, it's been a long time since my Jalapeno has been plugged into anything.

You can set startup parameters in the miner configuration page of minera.

Understood. No you don't need to pass a clock rate for the Jala though. I run it at cksolo pool for the hell of it and no clock rate needed.

I'm just going to wait for the adapter and get it working with the Prismas.

Also Thanks Tracerx for your time.

[mrpark]

If we want the Uart adapters and we are Batch1, should we buy them for you/pay shipping or will you just send them. How does it work? I don't mind either way.

AM is shipping the missing uart adapters express today, so hopefully I'll have them by the end of the week. Thankfully, I had enough spare BE controllers to get everyone from batch 1-5 up and running as quickly as possible. I appreciate those of you that temporarily gave up your reserved BE controller for other participants that need them.

With that said, I'll be sending reserved RPis tomorrow as well. Here's a short list of how to get them up and running.

1) You need a 5v 1a power supply and a usb cord with a micro usb connector
2) The RPi image is set up with DHCP. I gave it a hostname of "priminerapi". If you are unable to ping the RPi with that hostname, try running an app like "angryip" to find the ip address on your network
3) Minera is pre-installed with custom builds for ASICMiner and Rockminer enabled in the GUI. By default, I have the ASICMiner build selected with a startup parameter of "--bet-clk 23"
4) To access the minera interface, navigate to "http://priminerapi/minera" in your web browser. If the hostname is not being resolved by your router, replace priminerapi with the ip address assigned by dhcp.
5) Web login\password is minera\minera
6) Secure Shell superuser is pi\raspberry. Shell user minera\minera is also enabled and you should use this id for most of your actions in the shell.
7) Build scripts for all versions of bfgminer, cgminer, and AM/RM specific versions reside in /var/www/minera
Run the build script "build_miner.sh" as user "minera" to prevent any permissions issues.

[PlanetCrypto]

We looked at using those Hydronic radiator cores, and opted instead for mono extruded finned tube (https://www.finnedtube.com/extruded-fin-tubes) with "Turbolators" from MDE. For a plethora of reasons. The tube from MDE can be ordered to spec. As a hint, temperature cycling of the cores causes the aluminum fins to loosen causing poor thermal conductivity to/from the copper tube (as AL expands and contracts at a different rate than copper). Corrosion due to galvanic action between 2 dissimilar metals also becomes an issue over time.

Standard Hydronic Circulators (which by the way are NOT Pumps even though they are referred to as such) can be ordered from Supplyhouse.com (formerely known as PEX Supply). We prefer the Taco brand circulators with the built in check valves (best bang for buck) and can be found here http://www.supplyhouse.com/Taco-Cast-Iron-Pumps-289000 . Flow rate(s) of the pump(s) is dependent on a great many things from a system perspective and is way beyond detailing in this venue. Suffice to say a solid competency in thermo-dynamics and hydro-dynamics is a minimum requirement.

Using BTC Miners as a water heater/boiler is a 3 loop system. Loop 1 circulates fluid through the condenser coil in the sealed tank, Loop 2 circulates fluid, on thermostatic demand, to the PEX imbedded in the floor, and Loop 3 is a heat dump loop that circulates fluid to something to dump excess/waste heat when tank temperature exceeds design specs (i.e. this loop maintains a delta-T sufficient to maintain Novec vapor condensation and is dependent on the particular fluid 7000, 7100, 7200, 7300 or a blend thereof's boiling point that maintains the desired chip junction temperature Tj). All loops are feed from and discharge to a heat reservoir tank of sufficient size to buffer sudden changes in fluid temperature and account for fluid expansion/contraction. We use a 50/50 mixture of ethylene glycol and distilled/de-ionized water as the heat transfer fluid. Our systems run @ atmospheric pressure.

If the system is designed correctly one can, lower chip Tj (thereby facilitating severe OC'ing), optimize transfer fluid temperature for comfort heating, and create an extremely reliable system that can operate continuously for years unattended.

I was thinking about making something to transfer heat from miners, it may not be as complex, but by using scrap hydronic heating tubes (copper pipes with aluminum fins) and a pump I could make a system to transfer heat to another area.  The aluminum fins are supposed to disperse heat from water that is inside of the copper pipe.  Basically, instead of using a boiler, you use bitcoin miners.  I would imagine you would need a pump that could withstand the heat, and also you would not want to build up too much pressure. Thoughts?

bobsaq3 and sidehack are spot on at stock/factory clock rates.
We prefer to allow a little more head room for OC'ing the Prisma's and hence have migrated to one DPS-1600BB per Prisma.
OC'ing a Prisma only makes financial sense if the cost per Kwh is low ($0.08/KWh or less).

Then there are the heat dissipation issues that come with filling a room/Data Center with OC'ed Prisma's.
Pursuant to that we are prototyping Open Bath Immersion (OBI) cooling using the 3M Novec Engineered Fluids in custom built polycarbonate immersion tanks.
With the ultimate goal of immersing 32 OC'ed Prisma hash boards, controlled by an RPi w/wireless, in an OBI tank powered by 5 DPS-2000's.
Power consumption should be ~10Kw per tank and dissipate ~32K BTU continuously, enough to heat the average American sized home in a Minnesota winter AND GET PAID TO DO IT.
The residual/excess heat could be used to heat a garage, heat a driveway, heat sidewalks, melt snow off of the roof, heat a pool/hot tub/fish pond, etc. . . . . . .

Our Youtube channel (PlanetCrypto) has some videos of our initial testing.

Initial testing of 24x Tube Erupter boards in a Walmart fishtank:
http://www.youtube.com/watch?v=meOf0FJBkGA
http://www.youtube.com/watch?v=y_yfHJ8yoh8

A polycarbonate immersion tank with 2x Bitmain S3+ hash boards:
http://www.youtube.com/watch?v=gcb9TyQP5ZA
http://www.youtube.com/watch?v=fStHV_Q-x7s

We no longer power the fan in the S3+ tank as it is not required for condensation.
The heat generated from the S3+ tank supplements the in-floor heat in our little DC.
We have laid PEX in the ground outside the DC as a place to dump excess heat in upcoming expanded systems.

When we get a 32 Prisma board system up and running we'll post some vid's on the channel.

Awesome videos. If you flipped the 24x boards over it might look cooler since they were designed to push heat through the pcb. You would get lots of tiny bubbles instead of the big eruptions through the mounting holes. It might not be more efficient, but I think it would be cooler to look at.  I want to build an immersion tank as well, but lack of funds is preventing me from doing so. I do have several design ideas though. I know it was a test tank, but if you added a second radiator to the fish tank in a V formation you would get better condensation. You don't want to use fans in the tank because the name of the game is less energy used to cool the miners. Wow, sorry for sounding like a prick. I've spent a lot of time researching and designing a few different versions. It's nice to see someone putting a system together. Yes, I am jealous.
Heating a house with miners can definitely happen. It got to a frigid 40 degrees here last night in north Florida. I have 6 S1's and 2 S3's, with a box fan and relocating 2 miners the coldest part of the house was 68. The room where most of the miners were was 82. My central heat isn't working right now, so that was the miners keeping it warm in the house.  

The tube Erupter tank is disassembled, we were going to jump on those boards but the Prisma's came out (shout out to Crazy Guy for giving us the heads up).
Had lots of ideas too when we got into immersion cooling.
Thank the Bitcoin Gods we spent a day with Phil Tuma @ 3M.
Phil very kindly told us/me why a lot of our/my ideas wouldn't work (mostly cuz' he had already tried them @ 3M's expense).
Saved us a BUNCH of time and money not exploring crappy ideas.

Not saying any of your ideas are crappy, just my hair brained ideas.
V'ed coolers take up too much room in the tank versus mono extruded fin high thermal conductivity copper tube with Turbolators (https://www.finnedtube.com/extruded-fin-tubes & https://www.finnedtube.com/turbulators).
Fans don't survive cuz' the Novec fluid dries out the bearings and they stop spinning anyway.
Fans also dilute the vapor layer and consequently require larger condensation surface area/lower cooling fluid temperatures to condense the less dense vapor.
PVC coated wire leeches DOP (dioctyl phthalate) into the fluid which deposits itself on hot components (chips and copper back planes) and reduces thermal conductivity on the parts that really need it (http://en.wikipedia.org/wiki/Bis(2-ethylhexyl)_phthalate)
PTFE coated wire doesn't exhibit this problem but it's expensive as hell.
Unless the tank is purged of air, eventually, the water in the air will condense out, corrode metal components/circuit traces/solder joints and cause "ghosts in the machine" (bags of silica gel also solve this issue).

The 24x Tubes have a higher board chip density than the S3's.
Bitmain wouldn't sell us chips for our own high density board design (guess they were jealous).
Evidently somebody (friedcat) was listening cuz' the Prisma's have a much higher density than anything else out there on the market (big shout out to friedcat, thanks o brilliant one).
And in the immersion cooling world, board chip density is where it's at.

Suffice to say there are lots of hidden non-intuitive gotcha's in OBI cooling. But once over the learning curve it works like a dream and makes managing heat dissipation a breeze (pun intended).
Besides it looks cool as hell in a clear polycarbonate tank. LOL. We've had visitors pull up a chair and sit for hours watching the bubbles, kinda' like washing machine TV.

[TracerX]

Hey guys and gals, I just want to take a minute to show some appreciation to CG for the hard work he puts in for his group buy participants.  His level of communication is stellar, and the way he has handled delays outside of his control has been top notch.  If we've got any lurkers still waiting to pull the trigger on group buys (either this one or one in the future) I would highly suggest working with CrazyGuy.

I've not even been drinking, scout's honor!

[Blazed]

I would have to agree...I picked up a unit second hand not from his buy, and he has tried to help me regardless.

[CrazyGuy]

Thanks guys. I'm a miner as well, so I understand how frustrating delays, shipping mishaps, and troubleshooting can be. I advocate for all my customers and try my best to make sure everyone is taken care of.

[philipma1957]

Thanks guys. I'm a miner as well, so I understand how frustrating delays, shipping mishaps, and troubleshooting can be. I advocate for all my customers and try my best to make sure everyone is taken care of.

you have been a good seller to me for more then a year.

this unit looked nice.  I waited for it to be in your store rather then use btc.  So far no adapter so I can't order it.

I purchased some more s-3's on ebay with some coupons.

I am now at the spot of 10 in house s-3's.

 I can add one of your prosma's from asicpuppy use  paypal,  but still no usb adapter.

 Coins have bounced up a bit.  I have 1  20 amp circuit  with 1800 watts for 24/7 use just waiting for this gear.

please let us know if the usb cables are coming. If not I will have to just buy some more s-3's

[CrazyGuy]

The adapters are scheduled to be delivered today.

[mrpark]

I have nothing but good things to say about Crazyguy, I ordered a miner from him, and he kept good communications and helped me with shipping. My miner arrive well packed, and I got it up and working thanks to his thread and others helping me out here.  Buy with confidence!

[mrpark]

Anyone have an idea why Ghash.io is behaving like this? The black worker line (2nd line) is my Prisma, the other is a 1Th/s no name miner. I am on the Controller, would being in the RPI produce any different results? The miner itself is always running at 1.4Th/s so it must be Ghash.io?

[daddyfatsax]

Anyone have an idea why Ghash.io is behaving like this? The black worker line (2nd line) is my Prisma, the other is a 1Th/s no name miner. I am on the Controller, would being in the RPI produce any different results? The miner itself is always running at 1.4Th/s so it must be Ghash.io?

SNIP

I think Canary said he would not trust the Pi to run the Prisma's properly.

[ManeBjorn]

Now that is great news!

Good job as always CG.

The adapters are scheduled to be delivered today.

[LordPaco]

Got my 3x more prisma in from CrazyGuy a few hours ago they'd be hashing @ 99% efficiency working to ROI Great little machines and CrazyGuy is easy, fast, honest, and reliable to work with. So refreshing to see a little integrity in this business.

[CrazyGuy]

What are these things?...



I'll post some stats tonight. Group buy participants: if you haven't PM'ed me your preference on the adapters, please do so now.

[suchmoon]

What are these things?...

Naked flash drives?

Do these adapters work with the Tubes too? I'm looking to get a cheap Tube, would be nice to have it on USB as well.

[CrazyGuy]

What are these things?...

Naked flash drives?

Do these adapters work with the Tubes too? I'm looking to get a cheap Tube, would be nice to have it on USB as well.

Yes they do. I may have some used tubes up for sale soon. If anyone is interested, please PM me.

[CrazyGuy]

First 2.5 hrs mining mining on the pi and 2 prismas. No reboots and running solid. Total hashrate display in minera is inaccurate. Device hash rate below is accurate and matches what I'm seeing poolside. I'll have to look at the source this weekend and see what's going on.

One thing I did notice is that ASICMiner's build of cgminer does not handle the frequency parameter . When passing "--bet-clk 23", I received a ton of errors: "BET0: Unexpected value 00 received". Starting with no parameters fixed the issue