[DIY] - Reward $100 | Antminer S1/S3 Blade on Raspberry Pi

[J4bberwock]

There is another way.
You can consider each board as a loop.
Controler>RXD>chips>TXD>controler
So there should be a way to link 2 loops together this way:

Controler>RXD>chips on board 1>TXD>RXD>chips on board 2>TXD>controler

Not sure it would work, but it could another thing to try beside running them parallelled.

it should work, thats how all the chips are linked on one board. i could dig my boards back out and try it for a few mins because i dont have heat sinks on them.

edit:
if i could find some cheap or free boards i wont have an issue trying more stuff.

try those

https://bitcointalk.org/index.php?topic=827879.0

[sobe-it]

tried hooking them together.... and no luck. it   couldn't get it to set a clock with or without clock settings.

[HerbPean]

If Bitmain confirmed that we could use one existing S1 controller for 8 blades. Why don't they share the info to do it ?

[allcoinminer]

The significance of this project is already dead or being dead.
What you guys think?

[J4bberwock]

If Bitmain confirmed that we could use one existing S1 controller for 8 blades. Why don't they share the info to do it ?

The chips used in the controller board have 4 TX/RX lanes, so 4 boards would have been possible, if they were all connected (only 2 are)
At a time, Bitmain were speaking of a new controller that will allow more boards (up to 8?), but they never released anything.

[chainchomp]

What you guys are doing here is great!
I've got an S1 with a dead controller that I would love to get some more life out of (undervolted or not), so I'll gladly contribute $20 to the bounty if this guide is ever completed.

[HerbPean]

If Bitmain confirmed that we could use one existing S1 controller for 8 blades. Why don't they share the info to do it ?

The chips used in the controller board have 4 TX/RX lanes, so 4 boards would have been possible, if they were all connected (only 2 are)
At a time, Bitmain were speaking of a new controller that will allow more boards (up to 8?), but they never released anything.

Thanks for the answer ! :-)

[HerbPean]

The significance of this project is already dead or being dead.
What you guys think?

I Disagree. undervolt them with cheap electricity = win (add some fun too )

[WPlug]

Lets keep project alive!

FYI (Who dont know) original controller based on pic32mx250 (ready boards are Penguino or Fubarino Mini) which support 4 uarts. Possible to apply PicKits - but bitmain close source codes =(
PIC32MX795 (ready board http://fubarino.org/sd/index.html) - possible to attach 6uarts
- so needed programmer for this project way

another way - i will work
use USB-UART (based on cp2102 - less 1$ for piece on aliexpress) - attach only one board to the controller...
But in my way needed software ... code open by bitmain
https://codeload.github.com/bitmaintech/cgminer/zip/master
i will work on these... 

check driver-bitmain.h for example

now i am waiting boards and controllers to begin (shipped)

[HerbPean]

Soooooo, i took a look at the current PCB and BOM files that Bitmaintech put on github.

For like 100 units, it will cost at least 30$ each. I don't think producing the current board will be economically viable

I had to check !

[zziggi]

 hi guys! Great theme, cp2102 works fine with a single blade a lot of HW
The board overheating without a heat sink causes it. After lowering the voltage to 0.82V the blade stays cold, but I still screwed it to a piece of the monitor as a heat sink)
The best string that I’ve found is --bitmain-options 115200: 1: 8: 1: 200: 5002 gives the minimum number of errors and gives 38Gh on pool. It’s possible to change frequency with cgminer 4.7.0 with --anu-freq string, it recognizes the blade but it works like a single chip. Frequency greater than 250 dramatically increases the number of errors due to undervolting. At the frequency of 270 it consistently shows 43Gh on the pool. I sometimes managed to achieve speed about 80Gh on the pool with voltage turned to 1.1V.  The main problem is the old version of cgminer, I will try to compile a bimain version and describe the results here
http://s020.radikal.ru/i700/1410/b8/2acae425e183.jpg

[klondike_bar]

hi guys! Great theme, cp2102 works fine with a single blade a lot of HW
The board overheating without a heat sink causes it. After lowering the voltage to 0.82V the blade stays cold, but I still screwed it to a piece of the monitor as a heat sink)
The best string that I’ve found is --bitmain-options 115200: 1: 8: 1: 200: 5002 gives the minimum number of errors and gives 38Gh on pool. It’s possible to change frequency with cgminer 4.7.0 with --anu-freq string, it recognizes the blade but it works like a single chip. Frequency greater than 250 dramatically increases the number of errors due to undervolting. At the frequency of 270 it consistently shows 43Gh on the pool. I sometimes managed to achieve speed about 80Gh on the pool with voltage turned to 1.1V.  The main problem is the old version of cgminer, I will try to compile a bimain version and describe the results here
[img]http://s020.radikal.ru/i700/1410/b8/2acae425e183.jpg[/im

put the fans blowing on the back side of the PCB - it wil be a lot more effective than trying to cool the outer side of the chips

[zziggi]

its prototype) blade cold, place the fans I checked the temperature dependence of the HW.Heatsink required if the voltage is above 0.9v

[udaredme]

why wouldnt a block erupter controller work? curious..

[CHAOSiTEC]

j4bberwock will soon have a controller board ready.. he is waiting for the pcbs to arrive

[pekatete]

why wouldnt a block erupter controller work? curious..

Have you got one and a couple of S1 boards lying around? Try it and let us know .... if you have any other questions along the way, ask here and you'll be answered.

[udaredme]

i have an extra s1 yes, thought about getting a controller just to try...seems logical it might work..

[WPlug]

j4bberwock will soon have a controller board ready.. he is waiting for the pcbs to arrive

its first step, next will sofware
contollers are not a so problem

[allcoinminer]

hi guys! Great theme, cp2102 works fine with a single blade a lot of HW
The board overheating without a heat sink causes it. After lowering the voltage to 0.82V the blade stays cold, but I still screwed it to a piece of the monitor as a heat sink)
The best string that I’ve found is --bitmain-options 115200: 1: 8: 1: 200: 5002 gives the minimum number of errors and gives 38Gh on pool. It’s possible to change frequency with cgminer 4.7.0 with --anu-freq string, it recognizes the blade but it works like a single chip. Frequency greater than 250 dramatically increases the number of errors due to undervolting. At the frequency of 270 it consistently shows 43Gh on the pool. I sometimes managed to achieve speed about 80Gh on the pool with voltage turned to 1.1V.  The main problem is the old version of cgminer, I will try to compile a bimain version and describe the results here
[img]http://s020.radikal.ru/i700/1410/b8/2acae425e183.jpg[/im

put the fans blowing on the back side of the PCB - it wil be a lot more effective than trying to cool the outer side of the chips

Put one fan on each side to make the temperature under control.
Don't forget to add a good heatsink on backside.

[CHAOSiTEC]

j4bberwock will soon have a controller board ready.. he is waiting for the pcbs to arrive

its first step, next will sofware
contollers are not a so problem

that is why j4bber is sending out 2 controller boards, one to me, and another one so we can get on hacking at cgminer