Avalon Clone Assembly Service Europe

[cryptograd]

Oh shit I didnt realize it was you Johan

sorry

lol I thought i was flaming a n00b

carry on, great work

[strombom]

2013-07-10: Update, I have started to do test assembly of the mechanics, there are some issues, for example the screw threads for the router are misaligned, I have to fix this somehow. Overall it looks good though



Regarding the HW error rate, I have not looked into it. A week ago I compared the voltage ripple at 1.2 V on the original hash unit and my hash unit, I could not see any noticable differences. I will make a more serious test with heat compound and the real heat sinks and fans later on to see if there are any issues.

What is the definition of a HW error? How does the system determine there was a HW error? What are the sources that can produce HW errors? Where to learn more?

[strombom]

Update on HW errors...

When I was getting 25% HW errors I was using this setting: --avalon-options 115200:24:10:32:375

When I use my usual firmware on 245 MH/s I don't get many HW errors on the new hash units:

[thorvald]

I think that hw errors are counted as real work .
It was related to cgminer
The error count increased from 1.3% from your version519b to 1.7% with version703  for higher clock >360
for 445 from 0.7% to 1.2%
The shares submitted with version 703 have a lower pool speed variance .(I`m now constant at 57k 57.5k  with version 519b variance was +-5k on btcguild)

[strombom]

Here are the timing settings I used in 159b:

40:300
39:305
38:310
38:315
37:320
36:325
36:330
35:335
35:340
34:345
34:350
33:355
33:360
32:365
32:370
32:375
31:380
31:385
30:390
30:395

[magnets99]

Hi strombom,
I would like to purchase a controller board from you.
Is this possible? I'm not in a huge hurry, my chips don't arrive until September.

I am trying to make a water cooled Avalon.

Thanks

[strombom]

magnets99: All components from my first batch is sold out. We have ordered a second batch which will arrive in a few weeks. I will reply to you in a PM.

[strombom]

And so it begins... shipping the first (unassembled) units

[server]

Wonderful, truly wonderful...

I really find it amazing that you managed to make an exact Avalon clone.
And within just a few weeks time.

Respect and congrats

[JstnPwll]

All right! These are looking great. I wish my chips would hurry up and ship...

[strombom]

Today I have assembled a few more, where are the chips?

http://imgur.com/a/lxMWi

[strombom]

I have a tracking number for the first chips on the way to me, it seems they have arrived in Sweden so I expect them to arrive very soon!

[hacko.bg]

I have a tracking number for the first chips on the way to me, it seems they have arrived in Sweden so I expect them to arrive very soon!

You are talking about Avalon chips, right? When did you place the order with Avalon?

[strombom]

Since the chips arrived I have been working on the assembly process, I have had to work out quite a few different problems. I have slowly been finding a process that gives consistent quality, at first a lot of chips were not soldered properly and I had to do rework. Still going a bit slow, I will have to ship units in the order the chips arrive, so far I have assembled around 500 chips.



hacko.bg: I received chips from zefir first batch.

[loshia]

Since the chips arrived I have been working on the assembly process, I have had to work out quite a few different problems. I have slowly been finding a process that gives consistent quality, at first a lot of chips were not soldered properly and I had to do rework. Still going a bit slow, I will have to ship units in the order the chips arrive, so far I have assembled around 500 chips.



hacko.bg: I received chips from zefir first batch.

Nice:)

When done please PM us tracking numbers

[strombom]

loshia: Absolutely

Soldered chip:

[strombom]

Starting to assemble more modules...

I am not sure how much thermal grease should be applied. If anyone knows I'm all ears!

Soldered boards:


Inspected boards:


Heat sink:


Thermal paste:


Thermal paste:


Assembling hash unit:


Thermal paste:


Lots of screws...

[loshia]

About grace,
I am not sure how much shit you have to apply, but it is a good idea to make sure that there is enough paste to fill the gaps in between the bottom of the chips and radiator

[strombom]

Today I sent 3 modules. Unfortunately I don't think I will be able to send any full clones before the weekend, it will have to wait until monday :/

[server]

Do you check if the modules work before you send these to the clients ?