DIY PCB with AVALON: "The Quarter Stick" - Needs Help!

[jeprokzki]

Anyone bought the chips? stocks are available?

Avalon ASIC Chips 10,000

฿780.00

Probably you need about $50K ?

READ FIRST!

In stock

I proposed a consortium auction.  No one has bid at this time.  The chips appear sold out.

Just contacted Zefir. He had declared that he would buy chips to support Burning and
this DIY project. If I don't hear back from him soon then this is number one priority at
the moment.

How many chips would people be willing to purchase? Can we get a count?
Important to note that chips could be sitting around for months before being
utilized realistically speaking.

I don't know if I have the trust needed, but I could manage it, but better if
a very reputable member of the community stepped forward and helped out.

I'm good for a 500 Parts!

im interested to order 100pcs of this. but i dont have a skill to tinker this

[gateway]

Anyone know the estimated hash rate per chip? For example, buying 10 chips and using the dyi project can anyone care to guess potential hash rate..

I heard or maybe I could be wrong the selling avalon boxes have 240 chips in them.. ?

I just bought 10 chips and might buy more, but the boards are for 10 chips only is that correct?

looking forward to this project and the chips when they arrive

[northcape]

I read its one 1 mh/s per mhz, so ~250 to 300 mh/s per chip.

[dan99]

I read its one 1 mh/s per mhz, so ~250 to 300 mh/s per chip.

I read somewhere that pcb only can hold 10 chips ..

[bcpokey]

Avalon 66 GH/sec miners hold 240 chips IIRC. So that means that each board in their miners hold 80 chips, and each chip runs 275MH/sec. If you bought 10 chips you should reasonably expect to have a 2.75GH/sec miner. Not bad for $80 or so?

[becasual]

depending on the module you have the first avalon batch well over 60 ghash and second batch was 60 ghash and if each of these had the 3 modules some people have extra module going up to 85 ghash!
These modules range from 20 to 22 ghash and depending on the clock speed! I read on forum people usually doing it at 283 mhz which give you 283 mhash per chip 80 chips in each module!

[gateway]

Avalon 66 GH/sec miners hold 240 chips IIRC. So that means that each board in their miners hold 80 chips, and each chip runs 275MH/sec. If you bought 10 chips you should reasonably expect to have a 2.75GH/sec miner. Not bad for $80 or so?

Yea i wanted to buy more but my btc account = 0 now .. I prefer to do like 40 chips, and use this project.. also is the author of this thread active here?

[ektwr]

hi all

i have read this thread and i would like to take part in. I m new to BTC mining but i can help to PCB design and i can offer my site http://www.mineasics.com for free promotion of the project. I like BTC mining and i would like to have a DIY mining machine like this.
My site will be available for promotion maybe in the end of next week or sooner.
It would be amazing idea to mining with a powerfull modular and home made system.

waiting for your reply

[haaning]

you can count me in for 200 parts. maybe a few hundred more, i will know in a few days.

[samurai1200]

I don't have the time to read 12 pages of posts right now, but I will when I am off work. However, I'd like to quickly chime in here to say that I am an electrical engineer who has done somewhere in the range of ~150 PCB designs from block diagram to mass production, including testing, some embedded C/C++, etc. If I can be of some help in the development of this open source mining rig, please let me know!

Like I said, I'll read the rest of the thread tonight and see where I can assist, if anywhere.

[bennybong]

As an Avalon miner myself, I love this idea. Count me in if you need any funding....

[Syke]

It would sure be nice if Avalon would release the PCB sources. The Avalon is built around a 10-chip module. That would be a great starting place.

[alexuk]

I don't have the time to read 12 pages of posts right now, but I will when I am off work. However, I'd like to quickly chime in here to say that I am an electrical engineer who has done somewhere in the range of ~150 PCB designs from block diagram to mass production, including testing, some embedded C/C++, etc. If I can be of some help in the development of this open source mining rig, please let me know!

Like I said, I'll read the rest of the thread tonight and see where I can assist, if anywhere.

Hi Samurai - burnin / Zefir eariler were mentioning eariler - that they need embedded c/c++ help - pm burnin (who is helping to design the PCB) and see if you can fit in

[erk]

It would sure be nice if Avalon would release the PCB sources. The Avalon is built around a 10-chip module. That would be a great starting place.

If the chips are on the top, how is the heat getting to the heatsink on the other side of the PCB, wouldn't the board act as an insulator?

[BR0KK]

this package transfers heat to the pcb. Heat will be dissipated though the PCB. Note: the cooler is on the backside of the chip/pcb!

Avalon maker explained it somewhere in the thread..

Like in this pdf: http://www.cirrus.com/en/pubs/appNote/AN315REV1.pdf

[samurai1200]

It would sure be nice if Avalon would release the PCB sources. The Avalon is built around a 10-chip module. That would be a great starting place.

If the chips are on the top, how is the heat getting to the heatsink on the other side of the PCB, wouldn't the board act as an insulator?

Unless there is significant copper ON the PCB conducting the heat THROUGH to an exposed pad on the other side of the board. This is why QFN packages usually have large ground or gnd/thermal pads on the underside... good copper & via placement on a PCB can sink heat very well (and in some cases allow you to use PCB copper as a heatsink INSTEAD of a traditional extruded metal sink).

[erk]

this package transfers heat to the pcb. Heat will be dissipated though the PCB. Note: the cooler is on the backside of the chip/pcb!

Avalon maker explained it somewhere in the thread..

Like in this pdf: http://www.cirrus.com/en/pubs/appNote/AN315REV1.pdf

Absolutely fascinating, thanks for that. I never knew the QFN packages worked like that, learn something new every day!

[aeronautical]

I don't understand how you can come up with this without a data sheet from Avalon.
I don't want to be a bitch but a BOM how? and what go are you going to put in the PIC32MX210F016B-I/SP
I'm a Microchip design partner (C900-1156) how can anything go forward without the Avalon ASIC data sheet?

Do you have one, i happy to help out.

MC

[allten]

I don't understand how you can come up with this without a data sheet from Avalon.
I don't want to be a bitch but a BOM how? and what go are you going to put in the PIC32MX210F016B-I/SP
I'm a Microchip design partner (C900-1156) how can anything go forward without the Avalon ASIC data sheet?

Do you have one, i happy to help out.

MC

I understand your concerns and there will be no PCB ordered until there is an official Spec'.
Someone with FPGA experience gave me some input that made me feel more confident, but we'll
see. Doing something was better than waiting.

[ektwr]

how many layers this PCB should be? I suppose 4 layers, one would be the GND?