[CLOSED] Bitmine CoinCraft A1 28nm chip distribution / DIY support

[silver71]

Got my PCB made this week. Anyone else working on a reference build? Would love to compare notes  

I'm in 1 chip testing now.

It works with my Raspberry pi.

https://doc-10-04-docs.googleusercontent.com/docs/securesc/l4djka008adkbo5eb3peri1thtdq598p/ost2lihsqe4b0546nst514da23th9s8l/1394064000000/15398276951700677173/15398276951700677173/0B0zzUhzSOpuLSm45YVpNUHNOM0JYN2Z0UnNuZm5RcTRMd3BV?h=16653014193614665626&e=download

nice job!
could you show assembled board? both sides? would be interesting to see your cooling solution.

I taked picture before sending command to A1.
(It can't be running without heat-sink.)

I attached 55mm fan(with heat-sink assembly) to the bottom of PCB and attached to 50mm Heat-sink top side of asic( using 3M cooling pad. )

I consider Peltier cooling for this summer.

And where would you find 12x12 mm peltier ? Though 15x15 mm exists... Beware of condensation !

[1715136555]

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[1715136555]

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[1715136555]

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[1715136555]

1715136555

[intron]

I consider Peltier cooling for this summer.
--
Beware to keep temperatures above dew point:)

[zulover]

Got my PCB made this week. Anyone else working on a reference build? Would love to compare notes  

I'm in 1 chip testing now.

It works with my Raspberry pi.

https://doc-10-04-docs.googleusercontent.com/docs/securesc/l4djka008adkbo5eb3peri1thtdq598p/ost2lihsqe4b0546nst514da23th9s8l/1394064000000/15398276951700677173/15398276951700677173/0B0zzUhzSOpuLSm45YVpNUHNOM0JYN2Z0UnNuZm5RcTRMd3BV?h=16653014193614665626&e=download

nice job!
could you show assembled board? both sides? would be interesting to see your cooling solution.

I taked picture before sending command to A1.
(It can't be running without heat-sink.)

I attached 55mm fan(with heat-sink assembly) to the bottom of PCB and attached to 50mm Heat-sink top side of asic( using 3M cooling pad. )

I consider Peltier cooling for this summer.

whats the cost on the pcb and how many chips will it take alltogether?

[loshia]

Got my PCB made this week. Anyone else working on a reference build? Would love to compare notes  

I'm in 1 chip testing now.

It works with my Raspberry pi.

https://doc-10-04-docs.googleusercontent.com/docs/securesc/l4djka008adkbo5eb3peri1thtdq598p/ost2lihsqe4b0546nst514da23th9s8l/1394064000000/15398276951700677173/15398276951700677173/0B0zzUhzSOpuLSm45YVpNUHNOM0JYN2Z0UnNuZm5RcTRMd3BV?h=16653014193614665626&e=download

nice job!
could you show assembled board? both sides? would be interesting to see your cooling solution.

I taked picture before sending command to A1.
(It can't be running without heat-sink.)

I attached 55mm fan(with heat-sink assembly) to the bottom of PCB and attached to 50mm Heat-sink top side of asic( using 3M cooling pad. )

I consider Peltier cooling for this summer.

whats the cost on the pcb and how many chips will it take alltogether?

Are you blind dude?
Can you count?
It can take two chips. Get a quote from PCB factory

[silver71]

Another issue with hashing speed boost might be something we haven't previously thought about, and that is actually Raspberry Pi's FTDI, SPI and wrappers whose quality might influence operations with data Rx/Tx between NETWORK<< >> RPI<< >>BOARDS<< >>CHIPS.

Depends in most cases weather RPI parts are original or clone/fork.

See this russian test :

http://zeptobars.ru/en/read/FTDI-FT232RL-real-vs-fake-supereal

This article for which I posted link above, is a synthesis of one important dogma in PCB production.

And it comes out to this : IT IS OF NO MINOR IMPORTANCE FROM WHOM YOUR PCB MANUFACTURER ORDERS PARTS AND ARE THEY REAL OR FAKE; GOOD OR JUST GOOD-ENOUGH. Few cents could cost you thousands in debugging time...
...so the cheapest is not always the smartest choice.

Resume from the article :
"It seems that in this case Chinese designers implemented protocol-compatible "fake" chip, using mask-programmable microcontroller. This way they only needed to redo 1 mask - this is much cheaper than full mask set, and explains a lot of redundant pads on the die. Fake chip was working kinda fine until FTDI released drivers update, which were able to detect fake chips via USB and send only 0's in this case. It was impossible to foresee any possible further driver checks without full schematic recovery and these hidden tricks saved FTDI profits.

What's the economic reason of making software fake of well-known chip instead of making new one under your own name? This way they don't need to buy USB VID, sign drivers in Microsoft, no expenses on advertisement. This fake chip will be used right away in numerous mass-manufactured products. New chip will require designing new products (or revisions) - so sales ramp up will happen only 2-3 years later. Die manufacturing cost is roughly the same for both dies (~10-15 cents) .

From now on one should pay more and more attention when working with small shady distributors. Their slightly lower price could cause numerous hours of debugging fun."

This article above, covers 500/600-800 nm DIE and 68/123/143 µm SRAM 2
technology, but the same principle in COMPONENT CHOICE(S) have to be applied to this DIY ASIC PCB and 118 components which goes on it as well as components on power-train (PCI-E power bars), Raspberry Pi, and not to forget - POWER SUPPLY (SUPPLIES).

[Bicknellski]

The initial bring up 2 Chip Wasp A1 in hand... pick and place and re-flow ongoing. Room for 4 chips... 6 unlikely.

[giorgiomassa]

The initial bring up 2 Chip Wasp A1 in hand... pick and place and re-flow ongoing. Room for 4 chips... 6 unlikely.

Wow good work guys!!

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

[silver71]

Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

[drinkmorecoffee]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

I get if you're not including the actual A1's, but a DIY kit should include everything someone needs to assemble the device.  That is, the PCB and stencil are great, but it should include all the SMD components as well.  A "platinum" kit or something could also be made available which includes the A1.  I'm okay with paying a bit more for all the work you put into producing the kit and sourcing the components, but I can't justify $300 for nothing but PCB's and a stencil.  Even if that's a legit cost (I don't want to accuse you of unfair pricing), it's still too much for me to drop on a "kit" that doesn't include everything I'd need to do the job.

[gcube1305]

Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

I get if you're not including the actual A1's, but a DIY kit should include everything someone needs to assemble the device.  That is, the PCB and stencil are great, but it should include all the SMD components as well.  A "platinum" kit or something could also be made available which includes the A1.  I'm okay with paying a bit more for all the work you put into producing the kit and sourcing the components, but I can't justify $300 for nothing but PCB's and a stencil.  Even if that's a legit cost (I don't want to accuse you of unfair pricing), it's still too much for me to drop on a "kit" that doesn't include everything I'd need to do the job.

+1

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

I checked license for selling.

I'm hust selling PCB and stencil for DIY guys.

24USD per board is chipper than sample PCB making in my country.

It you need many PCB, you need to order it to PCB factory.

But if you need just 5~10 PCB with Stencil, you can save time and money by my item.

[silver71]

Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

I checked license for selling.

I'm hust selling PCB and stencil for DIY guys.

24USD per board is chipper than sample PCB making in my country.

It you need many PCB, you need to order it to PCB factory.

But if you need just 5~10 PCB with Stencil, you can save time and money by my item.

You still didn't answer what are you selling :

a) NAKED PCB
b) ASSEMBLED PCB
c) ASSEMBLED PCB WITH A1 CHIPS

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

I checked license for selling.

I'm hust selling PCB and stencil for DIY guys.

24USD per board is chipper than sample PCB making in my country.

It you need many PCB, you need to order it to PCB factory.

But if you need just 5~10 PCB with Stencil, you can save time and money by my item.

You still didn't answer what are you selling :

a) NAKED PCB
b) ASSEMBLED PCB
c) ASSEMBLED PCB WITH A1 CHIPS

answer is A. :-)

you need SMD components.

I'm selling $24 per board. ( b and c are impossible in this price. )

[silver71]

Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

I checked license for selling.

I'm hust selling PCB and stencil for DIY guys.

24USD per board is chipper than sample PCB making in my country.

It you need many PCB, you need to order it to PCB factory.

But if you need just 5~10 PCB with Stencil, you can save time and money by my item.

You still didn't answer what are you selling :

a) NAKED PCB
b) ASSEMBLED PCB
c) ASSEMBLED PCB WITH A1 CHIPS

answer is A. :-)

you need SMD components.

I'm selling $24 per board. ( b and c are impossible in this price. )

Why would someone pay 24 USD for bare board from KOREA, when public design is published and transport costs more then it's production ?

If you could scale up assembly price to 24, that would mean something, this way it's a rip-off...

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

This board has a granted public licence on github for 2-chip PCB, so what are you selling then ?

You're selling produced boards or what ?

24 USD per board ? Assembled, without A1 chips or just board and nothing else ?

I checked license for selling.

I'm hust selling PCB and stencil for DIY guys.

24USD per board is chipper than sample PCB making in my country.

It you need many PCB, you need to order it to PCB factory.

But if you need just 5~10 PCB with Stencil, you can save time and money by my item.

You still didn't answer what are you selling :

a) NAKED PCB
b) ASSEMBLED PCB
c) ASSEMBLED PCB WITH A1 CHIPS

answer is A. :-)

you need SMD components.

I'm selling $24 per board. ( b and c are impossible in this price. )

Why would someone pay 24 USD for bare board from KOREA, when public design is published and transport costs more then it's production ?

If you could scale up assembly price to 24, that would mean something, this way it's a rip-off...

Oh, I don't known your PCB maker's sample PCB production fee.

But in my case, I ordered this PCB before,  ( 8pc sample production 4 day deliver ) is was $200. ( $25 per board ).

If you need small quantity (5~10), It almost same price with sample production.

You don't need to wait production time.

If you want over 10 pc,  you just make your order and wait over a week for production.

I just think someone need this PCB with stencil for small DIY. (It is not a mass production price.)

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

I get if you're not including the actual A1's, but a DIY kit should include everything someone needs to assemble the device.  That is, the PCB and stencil are great, but it should include all the SMD components as well.  A "platinum" kit or something could also be made available which includes the A1.  I'm okay with paying a bit more for all the work you put into producing the kit and sourcing the components, but I can't justify $300 for nothing but PCB's and a stencil.  Even if that's a legit cost (I don't want to accuse you of unfair pricing), it's still too much for me to drop on a "kit" that doesn't include everything I'd need to do the job.

I see.

You want complete kit.

I only have 10 set of components for me. ( It was $1330 for 10 set. including shipping fee & customs VAT, I order from Digi-key, mouser, LTC)

It will be $357 per board. ( 1 PCB + set of components + 2 A1 chip )

[silver71]

Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

I get if you're not including the actual A1's, but a DIY kit should include everything someone needs to assemble the device.  That is, the PCB and stencil are great, but it should include all the SMD components as well.  A "platinum" kit or something could also be made available which includes the A1.  I'm okay with paying a bit more for all the work you put into producing the kit and sourcing the components, but I can't justify $300 for nothing but PCB's and a stencil.  Even if that's a legit cost (I don't want to accuse you of unfair pricing), it's still too much for me to drop on a "kit" that doesn't include everything I'd need to do the job.

I see.

You want complete kit.

I only have 10 set of components for me. ( It was $1330 for 10 set. including shipping fee & customs VAT, I order from Digi-key, mouser, LTC)

It will be $357 per board. ( 1 PCB + set of components + 2 A1 chip )

You are too expensive, maybe it's time to think about some other PCB facility to make you boards and kits ?

Do you need any recomendation ?

[end18]

http://thumb1.photo.ndrive.naver.com/12466325518?type=m3&setidc=2&filelink=yfTmbvStTJqzcRbH2MfRorLctZzh5CYXzrBXVQnCTp7GYMsDdY39QL7tPvicDbfACA==&authtoken=vmXj1+V/HENT4jAODAk29gI=


Anyone need reference board PCB?

I'm selling reference board PCB with stencil.

Here is my site.

http://theminingware.com/

I get if you're not including the actual A1's, but a DIY kit should include everything someone needs to assemble the device.  That is, the PCB and stencil are great, but it should include all the SMD components as well.  A "platinum" kit or something could also be made available which includes the A1.  I'm okay with paying a bit more for all the work you put into producing the kit and sourcing the components, but I can't justify $300 for nothing but PCB's and a stencil.  Even if that's a legit cost (I don't want to accuse you of unfair pricing), it's still too much for me to drop on a "kit" that doesn't include everything I'd need to do the job.

I see.

You want complete kit.

I only have 10 set of components for me. ( It was $1330 for 10 set. including shipping fee & customs VAT, I order from Digi-key, mouser, LTC)

It will be $357 per board. ( 1 PCB + set of components + 2 A1 chip )

You are too expensive, maybe it's time to think about some other PCB facility to make you boards and kits ?

Do you need any recomendation ?

OK, what's proper price per board do you think.

[end18]

I changed the price $6 per board.

Instead adding shipping fee ( EMS shipping )

My material cost of PCB is $5 and Stencil is $85

And selling it with $6 / $90 each.

Is this fair price?