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Author Topic: Avalon A7 announced  (Read 131146 times)
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throwaway2
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December 11, 2017, 02:14:05 AM
 #1961

is it possible to customize the fan speed on a 741? like can I specify a range (10-40) in the "minimum fan %" field on config or do I need to get fancy with "more options"

thought I read somewhere you can specify a custom range..thanks
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HagssFIN
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December 11, 2017, 02:25:01 AM
 #1962

is it possible to customize the fan speed on a 741? like can I specify a range (10-40) in the "minimum fan %" field on config or do I need to get fancy with "more options"

thought I read somewhere you can specify a custom range..thanks

There is no point restricting the maximum fan speed when it comes to the cooling, just let it control the fan speed automatically by temperature just like it does default.

If you need to have the miner quiet, you can try and follow this guide by philipma1957 https://bitcointalk.org/index.php?topic=2245487.0

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December 11, 2017, 04:00:39 AM
 #1963

Is the fan speed controlled by the Raspberry Pi, or the 741 itself.

Logically it would be the Pi controller...

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December 11, 2017, 10:28:50 AM
 #1964

Is the fan speed controlled by the Raspberry Pi, or the 741 itself.

Logically it would be the Pi controller...

Raspberry Pi.

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December 11, 2017, 11:44:39 AM
 #1965

As I have registered my interest with Cacaan.io regarding their Avalon 741, below is their official reply:-

Re: Product Enquiry - AvalonMiner 741

  Reply|
Today, 3:07 AM
You;
sales@canaan.io
Hi,

Thanks for your inquiry.

1)   We are sorry to inform you that A741 has been EOL (end of life). We already sold out all A741 machines this year. And we won't sale it anymore.

2)   We will launch the new product  recently. And A8 will be shipping in the first quarter 2018.

      We will announce all the details (include specification and price) when it is launched.

      Please be patient and keep focusing on our official website and social media.


3)  Our minimal order quantity is 60 units.

     For order less than 60 units, please turn to our distributor https://canaan.io/official-distributors/.


4)  If your order is over 60 units,please click the following website to fill the form.

     Everyone need to fill out a profile
DKirk
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December 11, 2017, 02:15:50 PM
 #1966

looking forward to seeing what the A8 can do. i noticed they had a teaser for it on the blok forge home page: https://www.blokforge.com/

PS does anyone set a custom range for their fan speed % on the 741? Thinking I may be able to tweak mine just a tad lower.

I'm also looking forward to seeing what the A8 can do.
I just missed the last batch of S9's but perhaps that could end up working in my favour. Smiley

Just spotted this post on instagram https://www.instagram.com/p/Bcc_p2jl9Ro/

when do you expect it?

My guess is as good as the next man but I'm hoping Canaan make an announcement this month. (this week even ha ha)
Would be awesome if we could also pre-order by January for Feb shipping or sooner.
And hopefully it is over 14th/s and under 1400w required electricity.
All speculation with crossed fingers. Smiley


Apparently it will be first quarter of 2018. A8 is also being teased on Blokforge - https://www.blokforge.com/

Hopefully it will be towards the first part of the quarter rather than the later.
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December 12, 2017, 01:26:07 AM
 #1967

I've been trying to purchase an Avalon 741, but as it is out of stock pretty much everywhere I made in order from Amazon where it is temporarily out of stock and won't charge me until it ships, whenever that may be.  I was looking on Alibaba though, and I found some going for around $1,000, which is quite a good deal it seems even after expensive shipping from China.  My question is, has anyone had any experience ordering one of these on Alibaba before?  I know there can be scams there, but the vendors I was looking at accept credit cards.  I assume that if I got scammed I could just do a chargeback, right?  It almost seems too good to be true since they are hard to find elsewhere, which makes me a bit nervous.

I can't speak to what your credit card will do for chargebacks, better check with them. I personally try to only buy from the distributors or you can try the marketplace here on the forum. That would be a really good deal though considering the A7's went through another price increase recently. I noticed on the Canaan page they are up to 1200.
The other side of the huge increase in BTC price.

https://canaan.io/shop/

That is ridiculous. At that price it then makes ZERO sense not to just buy an S9. Even with the price increase. Bitmain hasn't raised the price of the S9 recently, so all Canaan did was make the 741 less competitive.

I mean, S9's are going for like $3,500 these days if you don't want to wait at least 3 months.  That's kind of the deal these days.  The price isn't really the price if nothing is in stock.  I actually heard back from a lot of the people on Alibaba, and most actually want over $4k for S9's and about half that for the 741s'.
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December 12, 2017, 04:17:03 AM
 #1968

Does anyone know where you can find replacement  AUC3 I2C 5PIN Cable for the 741. Or even an option that would be a little longer?

i have a brand new one unopened. I have two avalons i bought brand new so i got an extra one. how much is worth to you. not trying to rip you off its of no real use to me but i know it has some value so give me a fair offer and we can do buisness
CryptoHodler30
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December 12, 2017, 06:34:14 AM
 #1969

Does anyone know where you can find replacement  AUC3 I2C 5PIN Cable for the 741. Or even an option that would be a little longer?
i have a brand new one unopened. I have two avalons i bought brand new so i got an extra one. how much is worth to you. not trying to rip you off its of no real use to me but i know it has some value so give me a fair offer and we can do buisness

How much are you asking?
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December 13, 2017, 12:37:15 AM
 #1970

They have a new page up on the 761: https://canaan.io/product/avalonminer-761/

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December 13, 2017, 12:38:49 AM
 #1971

Canaan is giving the good old A3212 chip one more good go.  Smiley
This is the same ASIC chip that was in the A741 model.

They are going to release the AvalonMiner 761.

https://canaan.io/product/avalonminer-761/

Quote from: Canaan
The AvalonMiner 761 is the ROQ Solid Miner, Refined. The AvalonMiner 761 is made with Reliable Open Quality, now with Airforming Cooling Technology and a built in Power Supply Unit

Containing 104 x A3212 16 nm chips, AvalonMiner 761 is the latest Canaan AvalonMiner with a 8.8 Reliable Hashrate Per Second (RTHS).

By connecting our AvalonMiner Controller (sold separately) to a single AUC3 (AvalonMiner USB Convertor 3), you may connect five AvalonMiners. For maximum usage, you may connect the AvalonMiner Controller to 4 AUC3 devices which may each connect to 5 AvalonMiners for a total simultaneous management of twenty AvalonMiner 761 to reach 176 TH/s (RTHS).

If you manage a large installation of AvalonMiners, we can help you to deploy our openly developed AvalonMiner Management System which enables you to efficiently manage thousands of AvalonMiner machines.

This product contains: 1 X AvalonMiner 761, 1 X AvalonMiner USB Converter 3 (AUC3), 1 X AUC3 I2C 5PIN Cable, 1 X Micro-usb cable. The power Supply is integrated with the miner so no additional PSU is required

Quote from: Canaan
Hashrate:   8.8 TH/s (RTHS) (8.8-9.5RTH/s in field)
Power Consumption:   ≈ 1320W, +0% ~ +15% (with 93% PSU efficiency @ 25 C)
Power Efficiency:   0.15 Joules/GigaHash at the wall
Rated Voltage:   Max 12.53
Chips:   104 x A3212 16nm ASIC
Frequency:   Smart Speed
Hash Error Rate:   ~2% on chip validation
PSU output pins:    NA
Network Connection:   Through AUC3 + AUC3 I2c to AvalonMiner Controller
Controller:   AvalonMiner Controller
AUC3:   Each AUC3 may daisy-chain connect up to 5 devices
Operating Temperature:   -5C-40C
Air-intake Temperature:   -5 °C to 40°C
Cooling:   Airform Cooling 1 rear fan 6000 RPM
Fan:   1 X 12038 PWN
Noise:   50-60db
Dimensions:   341 mm x 168 mm x 136 mm
Gross Dimensions:   405 mm x 215 mm x 206 mm
Net weight:   5.8 kg
Gross weight:   6.2 kg

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December 13, 2017, 12:42:01 AM
 #1972

Built in PSU is interesting - I'm guessing they'll be platinum rated too.
HagssFIN
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December 13, 2017, 12:44:29 AM
 #1973

Built in PSU is interesting - I'm guessing they'll be platinum rated too.

Yeah, this will definitely be an interesting solution to see  Smiley

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December 13, 2017, 02:05:56 AM
 #1974

Built in PSU is interesting - I'm guessing they'll be platinum rated too.

Yeah, this will definitely be an interesting solution to see  Smiley

I agree, this should be very interesting! I can't wait to get my hands on some of their machines.
I've seen alot of positive posts about their reliability.  Thanx for sharing this info!

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December 13, 2017, 02:06:26 AM
 #1975

Too bad no picture of the miner yet...
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December 13, 2017, 02:07:58 AM
 #1976

I started a different thread about a new Avalon 741 (my first) with fan issues, someone suggested I post here instead.  

Most of the time when I start the miner (about 8 times now in a week), sometime the fan starts sometimes it does not.  Tonight while testing a new power supply for the Pi (I'm reaching), the fan did not start on the first power cycle.

Miner went to blue and the temp climbed,

API said  0 rpm/33%

I shut it down when the miner hit 80 degrees C.  The fan was not moving.

When I rebooted, the fan did start, fast ramp up, then back down again.  This time it kept running but it was pulsing, and slowed down when the temp was climbing.  it went to 180rpm/95C and I killed power

When spun by hand there seems to be a hitch or catch as it spins.

I opened a ticket with Canaan, I think they will send a new fan
I reflashed the Pi once.
I got a new walwart power supply
I have a new Pi on order from Parallel Miners (ordered Sunday, no shipping info, paid 9$ extra for fast shipping)

1) Could it be the PWM signal, does that come from the miner or the Pi
2) does anyone have a source for a fan, the web does not show me one.


Thanks for any direction given.


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December 13, 2017, 02:18:14 AM
 #1977

Testing pic link

HagssFIN
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December 13, 2017, 03:02:31 AM
 #1978

Now there is a teaser website opened for the AvalonMiner 821  Cheesy

https://canaan.io/product/avalonminer-8xx/

Quote from: Canaan
The AvalonMiner 8xx is the ROQ Solid Miner, Refined. The AvalonMiner 8xx is made with Reliable Open Quality, now with Airforming Cooling Technology and a built in Power Supply Unit

Containing 104 x A3210 16 nm chips, AvalonMiner 8xxx is the latest Canaan AvalonMiner with a X.X Reliable Hashrate Per Second (RTHS).

By connecting our AvalonMiner Controller (sold separately) to a single AUC3 (AvalonMiner USB Convertor 3), you may connect five AvalonMiners. For maximum usage, you may connect the AvalonMiner Controller to 4 AUC3 devices which may each connect to 5 AvalonMiners for a total simultaneous management of twenty AvalonMiner 8xx to reach xxx TH/s (RTHS).

If you manage a large installation of AvalonMiners, we can help you to deploy our openly developed AvalonMiner Management System which enables you to efficiently manage thousands of AvalonMiner machines.

This product contains: 1 X AvalonMiner 8xx, 1 X AvalonMiner USB Converter 3 (AUC3), 1 X AUC3 I2C 5PIN Cable, 1 X Micro-usb cable. The power Supply is integrated with the miner so no additional PSU is required

Quote from: Canaan
Hashrate:   
Power Consumption:   
Power Efficiency:   
Rated Voltage:   
Chips:   104 x A3210 16nm ASIC
Frequency:   Smart Speed
Hash Error Rate:   ~2% on chip validation
PSU output pins:    NA
Network Connection:   Through AUC3 + AUC3 I2c to AvalonMiner Controller
Controller:   AvalonMiner Controller
AUC3:   Each AUC3 may daisy-chain connect up to 5 devices
Operating Temperature:   -5C-40C
Air-intake Temperature:   -5 °C to 40°C
Cooling:   Airform Cooling 1 rear fan 6000 RPM
Fan:   1 X 12038 PWN
Noise:   50-60db
Dimensions:   
Gross Dimensions:   
Net weight:   
Gross weight:

I guess they are still yet to confirm the exact technical specifications for the A8.

Anyways, I'm off to sleep now, way too late here  Cheesy

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December 13, 2017, 03:30:01 AM
 #1979

That is hilarious. I feel like someone is just sitting there revelling in this, waiting to post 1 smidgen of Info at a time... do I tell them the power consumption, or tease them with the first digit of the hashrate. Haha,

Just excited to see some info coming out.

EDIT: I just read through it more closely, and must say I was surprised they are integrating the PSU on these units.
Atleast there won't be 100 questions about power supplies, and 50 rebuys for a proper one

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December 13, 2017, 05:10:03 AM
 #1980

try disassembly fan & clean. its easy
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