I have 10 L3's hosted at a climate controlled datacenter (US).  Current prices dont make that cost effective.  if you've got a cheap power source, these could be a cheap and reliable addition to your farm.  I would like to sell all 10 to a single buyer.

Each L3 has a bitmain PSU with it, none of them are doubled-up.

I will accept escrow at the buyers expense.  I would prefer ETH or BTC for payment.

$4300 includes shipping in the lower 48 USA, sorry no international.

Trying to get a couple L3s tonight.  fought through to get them in my cart and at the confirmation screen.   When answering the little math question at the end it sits on "Verifying! Please do not repeat the submission"

Do I sit here all night, or do I eventually give up and try to resubmit?   I tried this the other night with D3's and never got my order through (to the math screen 3 times).


Thanks for any tips from you pros!

Hello,

I know in general we want to control the humidity levels for ASICS to a reasonable level, but I was curious what your experience has been if you're working with miners in un-airconditioned spaces.

In the climate I'm in (U.S. Desert Southwest), I can control the temperature pretty well with evaporative cooling because the weather is so dry.  In the early summer, the humidity might only be 15% outside, so cooling with evap will lower temps by 20 degrees or so, and will raise humidity up to about 40-50% which should actually be healthier for the miners.   In the late summer this gets worse, with a chance for humidity to reach 60 - 70% if I cool the miners down to a level that is suitable for running.

If there is no condensation risk due to the heat, and the humidity is still below the mfg's specs (90% for S9), do you see any risk in this or am I tempting fate?

The other option is powering down for the worst days of the year and accepting a $0.00 profit those days (Actually negative because of rent / depretiation etc.).  That still seems cheaper than buying enough A/C to cover any sizable install of S9's.

Is anyone using AC to cool ambient from maybe 110 down to 85 or so and then exhausting the airflow outside?  When I look at CFMs needed from the AC to keep each miner exhausting ~200cfm, the AC winds up having about 2x's the tonnage than would be expected based on the heat load of the actual miners.

thanks for any insights

Hey,

I put this simple powershell script together to aid in checking on the status of miners.   Its nothing fancy, but I wanted to play with PS and JSON a bit and this gave me an excuse to do it.    Feel free to use / change it to your hearts desire.   

I understand a lot of guys on this board can make this on their own very easily (and probably better!). For those of you that can't, here's a head-start you can use to build a monitoring script of your own.

Copy the text below into a text file with a 'ps1' file extension.    You may have to either digitally sign the script or disable signature checking to run it.
 Disabling Signing - https://technet.microsoft.com/en-us/library/ee176961.aspx
 Self-signing (Optional) - https://community.spiceworks.com/how_to/122368-signing-a-powershell-script-with-a-self-signed-certificate

Launch from the command prompt    ./[scriptname].ps1  BTCAddress
i.e.
'./CheckNiceHash.ps1 1JZRzjuf1rw9g3i9pFhLZKrMdQ7CzbBjLZ'


Theres obviously nothing malicious in the code - feel free to read through it - its too simple to be dangerous! 


#Leverages NiceHash API to display the current mining stats for a given BTC address.  Only shows active Algos or pending balance.
#
#This was written as a simple test to learn a bit about leveraging JSON, and learning a tiny bit of PowerShell.   
#Most of this code is rough and can be cleaned up quite a bit, but it is functional and can be used to build some
#simple monitoring scripts for your own purposes.
#
#Provided for public use, no charge or credit needed.
#BTC Donations: 1JZRzjuf1rw9g3i9pFhLZKrMdQ7CzbBjLZ


function CheckMiner ([string]$addr)

{
    $Request = "https://www.nicehash.com/api?method=stats.provider&addr=" + $addr
    $Result = Invoke-RestMethod -Uri $Request -Method Get
    $Rig = $Result.result.stats
    return $Rig
}
   
function PadTotal ([string]$Total)
{

    [int]$TotalLen = $Total.Length
    [int]$MissingChar = 12 - $TotalLen
   if ($MissingChar -eq 11){
        $Total = "0.00000000"
        $MissingChar = 0
    }

    Do {
        #Write-host "made it!"
        $Total = $Total +  "0"
        $MissingChar = $MissingChar-1
        } While ($MissingChar -gt 0 )
return $Total

}

#build an array with all of the descriptive names of the Algos that NH will report back with
$Algos = "Scrypt     ","SHA256     ","ScryptNf   ","X11        ","X13        ","Keccak     ","X15        ","Nist5      ","NeoScrtpt  ","Lyra2RE    ","Whirlpoolx ","Qubit      ","Quark      ","Axiom      ","Lyra2REv2  ","ScryptJaneNf16","Blake256r8","Blake256r14","Blake256r8vnl","Hodl       ","DaggerHash ","Decred     "
#pass the BTC address at the command line
$BTCAddress = $args

#get the stats from the API
$minerStats = CheckMiner ($BTCAddress)

[float]$TotalHash = 0
[float]$TotalRej = 0
[float]$TotalBal = 0

cls
$Now = Get-Date
Write-host $Now "Stats for " $BTCAddress

write-host "Algo             Speed (GH/S)    Rejected (GH/S)    Balance     "
write-host  "--------------------------------------------------------------"
ForEach ($Algo in $minerStats) {
    $AlgoSpeed = $Algo.accepted_speed
    $AlgoBal = $Algo.balance
    $AlgoRej = $Algo.rejected_speed

    if($AlgoBal -ne "0.00000000")
        {
        $TotalHash = $TotalHash + $AlgoSpeed
        $TotalRej = $TotalRej + $AlgoRej
        $TotalBal = $TotalBal + $AlgoBal
        $AlgoName = $Algos[$Algo.algo]
   
        write-host  $AlgoName "    " $AlgoSpeed "      " $AlgoRej "         " $AlgoBal
        }
       
}

#add white space to the vars so they print to the screen a little better (Im sure there is a better way to do this!)
$TotalHash2 = PadTotal($TotalHash)
$TotalRej2 = PadTotal($TotalRej)
$TotalBal2 = PadTotal($TotalBal)

write-host "Total Speed:    " $TotalHash2 "    " $TotalRej2 "       " $TotalBal2