more that 3 hashboard on S9

[30ppp]

Hi

on the S9 controller board, there is more than 3 socket please and I want to use them.

I soldered a new socket and connect the 4 hashboad but the firmware didn't detect it.
I tried many other custom firmware but all of them only support 3 hashboards.
Is there any config for this limit ??
here is the controller board picture: https://ibb.co/NFMNyqy

I mean like this: https://ibb.co/VCvMB5P

[BitMaxz]

I never heard someone success adding more hashboard in s9 they are only run at 3 hashboards.

Did you try to flash it with Braiins OS? If not try it and maybe it may detect another hashboard.

You can download the OS from here including the documentation from here: https://braiins-os.org/

[philipma1957]

The old controllers on batches 1,2,3,4 had more then three jacks at least four and they all worked with the old 2016 firmware.

Btw this is a repeat thread question but I am on an iPad and do not want to look back for the old thread.

[mikeywith]

There is no 3 board only limitation in the controller itself, it's all in the firmware, people used to connect 6 S7s boards to one controller and 4 S9s boards on a single S9 controller , you just need to figure out the right firmware and get a longer data cable since that extra board will be a bit far to reach to.

Btw this is a repeat thread question but I am on an iPad and do not want to look back for the old thread.

here are some similar questions phill

https://bitcointalk.org/index.php?topic=1173573.msg12529952#msg12529952
https://bitcointalk.org/index.php?topic=1629130.0
https://bitcointalk.org/index.php?topic=1234807.0

[30ppp]

I  already installed Brain OS, on the menu, it shows that it can support 6 ASIC boards.
https://ibb.co/610J3TG
But when I connect 4's ASIC board it didn't detect it and it didn't work.
I think there should be some manipulation on the board controller.
there some jumper on the backside on the controller board that I think should be soldered because the normal one is soldered.
here is the original board image:
https://ibb.co/0rHM572[
and here is the one that I soldered.
https://ibb.co/f9TchS8
And also I saw that there three resistors new to the male connector on the board, I added three new resistors for the new connector that I added, here is the picture:
https://ibb.co/7kHxBLw
But All these things didn't work.
The S7 controller board is different and it is true that it supports more than 3, I did it 3 years ago but right now the concern is S9.

[BitMaxz]

It seems that you are trying everything.

The soldered part you are talking about on the back the control board is for RX, TX, ETC... so I think with or without soldered they should be fine.

Where did you get the resistors? is it from another control board? if you put a random resistor there is a possibility that the control board may damage.

I tried to search about adding hashboard for antminer s9 in the whole night but no success. I already used any keyword but no result.

Try to go directly on Braiins OS official thread and maybe the author or other Braiins OS users will give some tips to link more hashboard. Here is the official thread below.

- https://bitcointalk.org/index.php?topic=5036844.0

[30ppp]

Thanks for your effort
Yes, I tool the resistors from another broken control board.
for sure I will toch Braiins OS official thread too.

[bobzombie]

EDIT: i just found that video:

Antminer S9 - 6 Boards per Controler Modification

https://www.youtube.com/watch?v=D9Pfqcdx6BM

picture:
https://ibb.co/7kHxBLw
But All these things didn't work.

long time ago , Some where on the youtube i watched a video , but i cannot remember if it was S7 or S9 or what ..
but he added/soldered lots of resistors for each extra socket , also on the back of the board
as far as i can remember , that board was kind of like your board , but he soldered the resistors on somewhere like (on your picture) R138 to R140 , and R142 to R144 and ....

[BitMaxz]

It's ctrl_c41 control board model and according to some comments that there are slots(terminals) are not working so I think he needs to place it to other slots and add another resistors. Try any of these slots j2, j3 and j4.

The default firmware is fine according to some comments so no custom/modified firmware just to show up another hashboards. Any version might work.

He needs to make sure the resistor won't die while soldering this might be the reason why his first try failed.

[30ppp]

Thanks, everybody for helping me to do this task.
finally, I did it.
Also today I found a youtube video that demonstrates how to do it, you can reach with via below link:

https://www.youtube.com/watch?v=PoXCEMNdVCI&list=WL&index=7&t=0s