Topic: Avalon A7 announced - page 45. (Read 147612 times)

Can the power supply unit from Canaan be used in the US and similar regions?
or is it for Asia and/or UK?

Thanks

You will need some of these:
http://www.parallelminer.com/product/rev2-ultimate-2400watt-power-supply-kit-for-gpu-mining-94-platinum-efficiency-200v240v-w-32pcie-plugs/

As for networking you can build a few Rasberry Pi, they have a how to a few pages back by Philip. Canaan site state 20 miners per controller but I would do 8 per controller, it would be 2 daisy chains per usb port. Network is fairly simple doesn't require much to setup. Good luck on getting the 60 Avalon' s it's been quiet from Canaan lately.

Hello all,

Im brand new to the forum and joined to ask for some opinions and feedback. We just placed an order for 60 Avalon 741's (if it's ever processed by Steve ), and are planning to build a small farm with them. (we also ordered a couple L3+'s, four S9's and two D3's so far, but thats another story).

We hope to run ~55 Avalon 741's at any given time with plans for another bulk order, hoping for about 40BTC/year for a couple years while we can (insert sarcastic 'HA' here)

We have a steel prefab warehouse available, approx 750 sq-ft. We're installing a dry fire suppression system, 24hr security cams, there are guards on the compound, 30,000 btu HVAC with filters and exhaust fans.

I was told the warehouse is connected to 300w 3 phase power and is wired for 220v (IIRC)

Electricity is dirt cheap in my country (like 0.001 USD), and my business partner owns a fire/safety/electrical industrial (Oil/Gas) service company, so we have a certified electrician and network/IT admin assisting with the setup/networking.

I wanted to get some feedback/pointers/tips on:

Power Requirements
Network Requirements

Is there any special network hardware that may be needed to run 50+ miners? (or is it as simple as a simple LAN network, three 24 port switches and an internet connection??)

help an old guy out
Much appreciated.

did you use   a reducer  to shrink  the 6 inch fan to a 4 inch duct?

something like this?

http://www.ebay.com/itm/Antminer-s1-s3-s4-s5-s7-L3-Zeus-Lightning-Thunder-fan-air-duct-shroud-cooling-/152664040852?


if so  you will kill the fan way way way faster

you need to buy this  stick the fan end into it and a little of the metal  box seal it by wrapping the duct with a bit of duct tape

http://www.homedepot.com/p/10-in-x-25-ft-Insulated-Flexible-Duct-R6-Silver-Jacket-F6IFD10X300/100142376?


i used 5 inch flex ducting attached to fan (fan has 5inch diameter).
but already ordered 10 inch to replace it.
what speed is yours fan running?



then inject into your heating 

http://www.homedepot.com/catalog/productImages/1000/e4/e4d28c45-41b7-4b99-af65-3b1eab5bdd7a_1000.jpg

http://www.homedepot.com/p/8-in-Round-Tee-T8X8X8/100128619

I run a garage setup


I run the solar array  which is a lot like an attic



the solar array the exhaust fans are on top of the gear.  so the wrapping of the  two racks  allows for the wind tunnel effect


venting from your garage to your attic   works if you are a ranch  so  the  run would not be too long.

you may need a ceiling exhaust in the garage and a gable fan in the attic

l
<<< fan
l
i
i          fan       attic
---------^-----------------------------
            ^
            ^
          miners    garage   

Is there a benefit to fully enclosing the miners? Speaking more to a very small operation like mine (< 5 miners).

I'm kicking around ideas, but I am currently planning on building some type of enclosure that will funnel the hot air up from the miner enclosure in the garage into the attic. During the summer months, the heat in the attic greatly exceeds the heat in the garage, so even with the heat from the miners, the added circulation shouldn't increase the temp (and may even lower it due to the added circulation. And in the winter, it should represent a marginal reduction in the cost for heating the house.

You have a point  and the barn /loft  gear is in is a big space.    say 60 by 24 or 1400 sf ft.

But we don't  inject any ac .  he can inject ac into the space.

So it means  his gear would get cooler air then my gear gets.

We triple heat shielded the racks.

The silver  tarp reflected heat and shed water if the rook leaks
The silver bubble warp reflected heat
The car insulation directed hot air to the fans which are 18 inches from the racks

This setup  really reduces heat in the loft.  If you sit by the gear you feel the suction of the two fans  and the temps are 8 f cooler then if you move to the left of the gear.
I was really proud that about  200 usd  in material reduced the  heat  so much.  and protected against a roof leak

Hello,
Is avalon 741 ok to run fan on high speed (5400-5600rpm) ?
i put ducting on mine to turn it into under-house heating about a week ago and so far no problems,but its running at 30C and fan 5400-5600rpm

thanks

Phil your 2 racks are  fully wrapped with  the car insulation that is a heat and sound  barrier.

Anyone  can do that  even with bigger racks.  You have two three foot wide three foot high racks.

So you are six foot wide  three feet high   that is  6+6+3+3 = 18 ft of the  car insulation.

The photos look like you are almost on top of the two exhaust fans.

So a bigger operation  with 24,000 cfm fans would be hard to get the wind tunnel you get.

Thanks @philipma1957!!, thats the kind of info I was looking for. Cheers
We have two 24" 24,000 CFM fans we were thinking of using somehow. I am seeing from your calculations, thats no where near enough to keep the pressure ratio correct.

Any suggestions??


@bdog1234 "Hope you are to too old - you might not live long enough to see them. "
 

I hope you hear back from them also. We are exploring GPU mining, but the cards are over priced locally, so we need to find bulk suppliers.

I just got an email from Canaan a few minutes ago as we requested their company registration info before wiring any money. Have you reached out to them? (sorry if a silly question), we have been very persistent with them, but always very pleasant.

Thanks @goose1072!

400amp 220 volts sounds better

5 amps a unit  

derate 20%

320 amps  divide by 5 =  64 max


so running 55 is possible  


now  1100 watts = 4000 btu

55 x 4000 btu =  220,000 btu

you need lots of exhaust fans    

as for network  a 5 port   lan  router  one from the modem  then connect to 2 x   16 port switches

do  5 miners to a rasp pi3    put   6 rasp pi's on each switch  if the gear dies you can move all the rasp pi's to one switch.

Hello all,

Im brand new to the forum and joined to ask for some opinions and feedback. We just placed an order for 60 Avalon 741's (if it's ever processed by Steve ), and are planning to build a small farm with them. (we also ordered a couple L3+'s, four S9's and two D3's so far, but thats another story).

We hope to run ~55 Avalon 741's at any given time with plans for another bulk order, hoping for about 40BTC/year for a couple years while we can (insert sarcastic 'HA' here)

We have a steel prefab warehouse available, approx 750 sq-ft. We're installing a dry fire suppression system, 24hr security cams, there are guards on the compound, 30,000 btu HVAC with filters and exhaust fans.

I was told the warehouse is connected to 400w 3 phase power and is wired for 220v (IIRC)

Electricity is dirt cheap in my country (like 0.001 USD), and my business partner owns a fire/safety/electrical industrial (Oil/Gas) service company, so we have a certified electrician and network/IT admin assisting with the setup/networking.

I wanted to get some feedback/pointers/tips on:

Power Requirements
Network Requirements

Is there any special network hardware that may be needed to run 50+ miners? (or is it as simple as a simple LAN network, three 24 port switches and an internet connection??)

help an old guy out
Much appreciated.

the problem with that number  is that in ten minutes all the extra hash can shift to BCC  and the increase drops.

Last jump  diff was -28%  at block 400 of the 2016 blocks  late the hash left  BCC and cam back to btc and the  final number was 3.3%


look here

https://pool.viabtc.com/

we are at

BTC 7674p or 7.674E
BCC 1056p or 1.056E

It is no longer possible to know  what the diff will be since some times

BTC drops to 4500p and BCC jumps to 3900p

that can happen in an hour from now.

Hello all,

Im brand new to the forum and joined to ask for some opinions and feedback. We just placed an order for 60 Avalon 741's (if it's ever processed by Steve ), and are planning to build a small farm with them. (we also ordered a couple L3+'s, four S9's and two D3's so far, but thats another story).

We hope to run ~55 Avalon 741's at any given time with plans for another bulk order, hoping for about 40BTC/year for a couple years while we can (insert sarcastic 'HA' here)

We have a steel prefab warehouse available, approx 750 sq-ft. We're installing a dry fire suppression system, 24hr security cams, there are guards on the compound, 30,000 btu HVAC with filters and exhaust fans.

I was told the warehouse is connected to 400w 3 phase power and is wired for 220v (IIRC)

Electricity is dirt cheap in my country (like 0.001 USD), and my business partner owns a fire/safety/electrical industrial (Oil/Gas) service company, so we have a certified electrician and network/IT admin assisting with the setup/networking.

I wanted to get some feedback/pointers/tips on:

Power Requirements
Network Requirements

Is there any special network hardware that may be needed to run 50+ miners? (or is it as simple as a simple LAN network, three 24 port switches and an internet connection??)

help an old guy out
Much appreciated.

help an old guy out