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UPDATE: Finished bfgminer port for these....between this and fpga firmware update they run full speed on almost any scrypt pool! PM me for details

I have been working on a big update to the Alcheminer / MAT excalibur over on litecointalk (I won't repost the whole thing here but you can read up here : https://litecointalk.org/index.php?topic=27370.0

Long story short I found a huge flaw in the FPGA firmware that drives these machines, and updated the FPGA code as well as the python driver code to support the new logic. I have the machines running at full speed (around 250MH up from stock firmware/driver of around 210-220) at around 8W/MH.

There are also a lot more driver updates including the ability to change clock rate and tweaks to the stratum proxy.

Now that I have had a few users test out the firmware and upgrade process I'm posting it on here in case anyone with these machines has not seen the liitecointalk discussion and wants to get a bit more performance out of these.

Shoot me a PM on here or litecointalk for more info! (same username).

Finished bfgminer driver for these PM me for more details!

https://farm6.staticflickr.com/5788/21712430766_5f8b0e5574_b.jpg (https://flic.kr/p/z5DTdA)

Is this miner the same thing as the Hashcoins Ares 256MHS miner? I have one of these and can't seem to get more than about 180MHS out of it. Thanks in advance.

The only reseller of the Alcheminers I know about is Mining Asics Technologies (MAT). If you have pics of the outside/hashboards ill let you know for sure.

After a little searching I came across this: https://bitcointalk.org/index.php?topic=951075

So yes this is an exact copy of an Alcheminer....I guess these guys had more resellers than I thought..

The updated firmware and bfgminer driver should run on that no issue.

Update: Driver has been added to main branch of bfgminer and is synced with bgminer 5.4! Just PM me for the flasher file needed to flash the firmware for these systems to work with the bfgminer driver.

Huge thanks to jstefanop. With the firmware upgrade and bfgminer I got my Alcheminer running at 240 MH/s instead of 180 MH/s. Still experimenting with settings, some boards might need to be under/over clocked for best efficiency.

I'll add my little bit to the Alcheminer community on this - I just went through the process of installing Minera and getting it going on the Alcheminer; here's the exact steps:


Replace the contents of BFGMINER_CONFIG with "CFLAGS=-O3 --enable-scrypt --enable-alchemist --disable-other-drivers --enable-broad-udevrules"

Go in and change the contents of server.document-root to "/var/www/minera"


Now the one tricky part, you need to replace JSON_PRETTY_PRINT with 128, you can search to find the files using this string:


As of right now, that's these files (ignore matches in the logs directory):

application/models/util_model.php
application/controllers/app.php
application/views/settings.php

-------

With that, you'll have an install of Minera that actually works well, and is running the latest BFGMiner as well.

Here are my settings in Minera:

Select LTC/BTC as your Altcoin Price
Data tables set to 10 (shows all the blades)
Section panels, all off except Local Miner, Local Pools, Shares Chart, System Load and Hashrates chart
Pool Settings - add your pools
Local Miner - select BFGMiner
Set to Manual
Turn on "Append JSON conf"
In manual options, set it to this: "--scrypt -S ALC:all -S ALC:/dev/ttyO1 -S ALC:/dev/ttyO2 -S ALC:/dev/ttyO3 -S ALC:/dev/ttyO4 --set ALC:clock=336"
on API Allow, add "W:0/0"
Miner Autorecover on
Miner Superuser on
Set your system hostname to whatever
Set your timezone to whatever

-------

And now you have a nice and fancy updated interface to go with that spiffy firmware jstefanop did!

I'm stuck at the bolded step, got minera installed I cant find and BFGMINER_CONFIG file in the minera folder

and also all that is done in the minera folder ? I already have BFGMIner instlled using jstephanop's instructions are we doing a brand new install of bfgminer here ?

NM if I missed the nano editor command , that's where the config details are at sorry skipped that line

I'll continue the process and let you know how it goes thanks !

p.s it does look like a new install of bfgminer is occurring on the next like where you do the install.

would it be possible to just change the miner source path and other settings in the config file instead of re-installing BFGminer from scratch ?

It's not in the minera folder, it's inside the build_miner.sh, that's the nano command right before the bolded part.

As far as the build - that's correct - it builds all of this under the minera folder (as per their config).  It's using the latest release from the git repository, which has all of jstefanop changes in it.  One of the older writeups of getting Minera working had you copying the bfgminer from jstefanop steps into the custom miner folder - but I think this was done prior to him taking over scrypt support in bfgminer.

You could copy over and do the custom route if you don't want to build in that path - but I think that will be much more of a PIA to keep current - don't forget, this is integrated into the release of bfgminer now, and that change that you make to the build.miner.sh make it the same as his original build instructions.  On all of my devices, I don't install the older version anymore, just the latest git version.

It's runs amazingly well, and with the Minera interface is really an exceptional miner.

Don't have an alcheminer but used to like to watch the 'hack' and firmware thread over there at www.litecointalk.org (http://www.litecointalk.org)

But now that it is GONE...litecointalk I mean..is there an area here on bitcointalk that has replaced this?

 Everything is on litecointalk.org BUT the actual firmware for the boards that you used ot PM to folk

can you get us a link to such..got a buddy wants to flash the works after slog'ing thru the old litecointalk org thread archive

(or anybody got a copy for that manner that did same..can you post such?)

Hello,

i followed the instruction on the ltc-talk and all works fine, but the file "Alche_FPGA_v2_flasher.svf" is missed. Kann anyone please sent or upload? I tryied few times to connect to jstefanop, but he dont want me rewrite.

Thank you!

You need to buy it from him - he's the one who wrote the mod, etc.  I can't remember how much exactly it was, but he was responsive when I bought it a while back and it makes the machine run infinitely better, well worth the money.

yeah no joy....i know he is on litecointalk.io but he is not responding there ...got a buddy who also needs it bad..last step in the upgrade he is caught up on thread
with all the rest anyway for what it is worth you can try there ....if you find out anything let me know we planned to tip him anyway.....but buying works..
www.litecointalk.io (http://www.litecointalk.io)

Hello, after "grep -r --include \*.php "JSON_PRETTY_PRINT" ."  Minera goes dead.

I got this to run... and i think minera is trash for slowly processors. Very laggy, needs over 10min to save.
Commandline use is the best miningsoftware.

Hey sorry have been pretty busy lately....just pm me on here and ill get up to date to all the PMs I got. Bfgminer port is open source and is included in luke's official repo so its just a matter of downloading it. Like others said you do need to flash the boards with new firmware, and ill PM you the flash file you need for that. The instructions for it are detailed in the litecointalk thread.

Jstefanop, did you know about PWM Fancontrol with the Stockcontroler? Or try anything in this way? The Fans needed only 2 extra cables.  
An flat Temperaturesensor can easy put on... But can bfgminer driver read this signal?

i use minera every day with no lag btw jat i sent him a copy of the firmware free if he had paid me any thing i would given it to you i told him not to , i hope that was ok.


I'm using the new beta version  of Minera with the old version of minera as the software controller  right now with no issue sense the beta only supports network miners with API access not just CGMINER :) but will  do it all soon im told  .  with two script miners and bfg one is a AlcheMiner/MAT miner.  I'm even trying to get eth mining working with minera and windows that a lot of joy just getting the new minera to install on a windows box but poss if it's win 10 .

https://i.imgur.com/6PmHIgu.png

 i would post some SS of it in the new minera but not sure if the DEV wants me to yet, i asked .

with these settings



and setting the difficulty to 8192 all the time ( i found anything lower or higher it doesn't like ) and hashes bad .

that's with all five boards flashed on a usb 3.0 hub with custom made cables and power cables from each board to the PSU, i had to many issue with the patch cables it had , it works great on any pool i use with minera.

How replace JSON_PRETTY_PRINT with 128? Thanks

Thanks again :-)
I want to pay jstefanop for his awesome work, but he dont answer to my messages  :-\
And i have problem with install.sh and autostart,sh ... The files dont exist. So i cant leave the MAT alone and have to stay on SSH connection and everytime open terminal.
Cant leave it without terminate bfg,

I make the experience, than every pool works with another workdiff better. litecoinpool.org 32k , clevermining 16k (on KNC Port 3444) and with low poolhashrate works the miner on 65k workdiff better.
With 8k i dont get the full hashrate and get 2% rejected. With >16k i going under <1% rejected.


Very important information! I make it too, also i inverse the air direction and without the patchcable i can placed the fans straight on the heatsink. For reducing noise level every fan got an NTC Resistor.

I tiried all those ports at first and now end up  using it at

my boards work well or seem to like that setting best, no board is doing 12 MN while the rest do 32 MH if I use that differently setting as part of my set up . I tested it a lot  and it all most worthless to over clock them with the new firmware beyond tried a few times at max 352 it worked for while then shut down and i had lots of  cool air blowing on the boards,  it gets  some really strange high HW errors then say some thing about floating point limit reached in BFG then stops mining till it's shuts off or reset with the clocks at 320, so i leave it there and have no issue at all . and the firmware acttly works another way or has so far for me if i have the fans off it will shut down if it gets to hot after 12 mins and has so far every time @ 12 mins,  i tested it . so with the update it seems it can't over heat and burn out the boards Jat did some nice work fixing the manufacturer mistakes .


.

are you using the MAT controller if so that why . let me find that post how to fix it .
you have to change stuff  on that controller if  you replaced it with the new BFG or other GUI after you flashed the boards according to what Jat said on the old lite coin forums all that controller is a watered version of a raspberry PI  once you over write the old software you have to change some paths and other stuff on that controller ,I'm using my own controller with custom plugs to a USB 3.0 self powered Hub plugged into a Cubieboard PI running either minera or just BFG with Ubuntu 16.04.1 .

hey can you post Screens shots of that fan set up, i might try it to cut down even more on noise and run them cooler .


here's my post about how to use it with a custom PI or your own controller .

https://bitcointalk.org/index.php?topic=1468120.0

Yes, i use the MAT Controller until i get my ROI, than i invest time and money in Raspi-Solving. Actually iam trying/playing with LM317 IC with Temp-Sensor to controll fanspeed...



This question i have too :-)
Can you please answer

here is about that start.sh issue im looking for the post were  some one loaded minera on one of those controller and  explained kind of  how to replace it  ,


for the start.sh issue  

https://archive.litecointalk.org/index.php?topic=27370.msg286291#msg286291


Make sure your running exactly

sudo ./start.sh   ...it needs the sudo

also type ldd bfgminer in bdfminer dirrectory

I think your missing one of the libraries. Its a hidden file inside the libbkmaker folder so make sure you do a recursive copy of the folder I gave you otherwise all the needed files wont copy over.

If your still haveing issues just PM me your box info and I can SSH into and check it out for you.  

 or


@marvel logged into your box via your VPN and the issue was you somehow changed permission on the files...thats why it was not working. I copied over a fresh install and its up and running now! Just log into the screen session and quit the running instance and edit start.sh with your pool info and just start it back up with sudo ./start.sh.
this might help with the print thing  


https://bitcointalk.org/index.php?topic=1171007.msg12984898#msg12984898


Now the one tricky part, you need to replace JSON_PRETTY_PRINT with 128, you can search to find the files using this string:

Code:



As of right now, that's these files (ignore matches in the logs directory):

application/models/util_model.php
application/controllers/app.php
application/views/settings.php

other wise sorry don't know have yet to have to, only remember reading about it .

Or ask

MarkAz :) .

once you know what file to copy use the cp command something this like this i guess

cp the file  /application/models/util_model.php
cp the file  /application/controllers/app.php
cp the file  /application/views/settings.php

I'm guessing at this point .

Thank you, i try it today.

Can you please answer what means "128" ? :-)

I Installed minera now again and get the same issue, that minera dont want save any changes and the saving popup dont going away. And all files are in the right destination... why i have replace anything? Otherwise on the startpage i have JSON errors.

So, i got one Minera to running on the MAT, what are cleaned from Python Miner.
But i have Problems with the MAT, which dont cleaned by me. The *** python miner grabing the hashboard before minera can do this and because minera, i cant go to the python miner to terminate this... Another problem with minera is, that an reboot is like lotto, you dont know what will be happened with minera, once its dead and needed to be reinstall, once all savings are deleted, once it changed to cpuminer, once my pools are changed to the donation pools...

And by the MAT, which is with running minera, i miss 60mh/s...  

Commandline bfgminer is still the best :D

actually it's the same with mniera or not the problem if you not willing to give it shot it with any PI type controller make you own your USB->UART dongles and run it with  a good  usb 2 or 3 hub self powered  to a PI of your choice after you follow this guide

 https://bitcointalk.org/index.php?topic=1468120.0

I list every thing you need , i don't make  videos, i hate making video and never will . i can add more pictures, i guess if needed . to lazy, I guess why i didn't.

in  minera don't use CPU miner or if you manually install it edit one of the files and set BFG as default on install . i know there is adds just pay 5 bucks to remove them forever, it is very stable if you  use Ubuntu 16 and  manually install minera but you have to use 7.0 php and change some lines in the install_minera.sh so it installs right with Ubuntu 16 and i also added this miner to the miners_conf.json with presets as part of a manual install.

if you want a copy of those files I'll give them a way freely .I even had minera eth mining as the controller on a  rig with three RX 470 sort of, to see if i could but sense i don't like using Ubuntu as my main OS and don't mind using it on PI's . i put my PC back to windows .


did you PM  JSTEFANOP  in a nice way and offer to pay for his time, that might work .



I have no idea never had to worry about it or came across it, if i had id be more then willing to share what it means and how to fix it. i do know it has some thing to do with Java script i looked it up once but didn't fine much  other then it's a java function of some kind . I may even be wrong about that .

Hi toptek, thank you for reply,

i have the feeling, that we have a little missunderstanding. My controller works very fine, is very stable without any issues or crashes and i love the stock-controller and want be together until death parts us. The 5 Bucks are not the problem, i invest over 50bucks for small changes and want invest more for new custom heatsinks (maybe watercooled) and small heatsinks on other side for every chip.

It cant be so difficult to write in the startup file the bfg comand or write  an bash-file, what have to execute after start... But i cant find this configfile.

And i have wrote jstefanop und want to pay him, but he dont answer.

Once i dont want pay for minera, if they dont work fine. They dont want that i cant feel/use the full minera experience, than i havent feelings to pay.

try this for BFG start up in command line is that what your really looking for

http://blog.verticodelabs.com/raspberry-pi-bfgminer-service/

i could never get that to work right, may be you can.

or some thing like this edit how you want .


that's from here i changed the device setting at the end i think you have to use the same device setting for Mat  miners,  if you flashed the boards.

https://www.rastating.com/mining-dogecoin-with-a-zeusminer-blizzard-and-a-raspberry-pi/  

I used to use that a lot with Zeus miners it should work the same for any thing BFG controls .

bottom of the page remember all PI's work the same. or seem to from what I've done .

not sure how well that works with Ubuntu 16 it's different, I'm still trying to figure out why BFG won't  auto start with minera with Ubuntu 16 but will with 15 or lower .other wise  i have no issue with minera 7.0 or the beta Ive been testing.

the start up conf files for miinera are in the etc folder  /etc/rc.local  and /etc/lighttpd/ and minera it self is here /var/www/minera use this on a windows box if you have one https://winscp.net/eng/index.php?#utm_source=winscp&utm_medium=app&utm_campaign=5.9.2 with SSH  it awesome  not sure if this is what you want .

My MAT works with bfgminer and SSH... And that is the Problem, because i need everytime other PC with SSH connection and stay on. If you close SSH, than this will terminate bfgminer. Because this i want configure bfgminer as startup app, or better as deamon. Thanks for the first url! I will try this and exactly what i searched.

https://www.gnu.org/software/screen/

install screen or use screen it should be installed, you installed as part the BFG compile :) .

https://www.digitalocean.com/community/tutorials/how-to-install-and-use-screen-on-an-ubuntu-cloud-server

 screen works with any Linux OS.

if not this is how short version :

use it like this :

 
then whatever path you use for bfg    
then close it out by hitting

then being ssh backup and type


to test it .

 if it worked right bfg should still be running and  you can close the SSH screen  until you reboot or turn off the PC/PI .

if you set a startup script from one of  the links above it should startup after reboot or shut down .

sorry i did misunderstand .

:) .

if you water cool let me know how that went id very interested in doing that. I just need five heat sink that fit the boards i have the rest pump rad etc . unless Innosilicon put outs A model that can do 1 GH these thing are still worth using and would be hard to find for sell till then the only set back now is power usage but if you have cheap power it won't mater or lots of speeds, it will pay for it self .
 
whats makes the A4 so good is it's power usages not the speed  the AlcheMiner/MAT and the titans can keep up with no problem,  i read some place with the right cooling on these beast with all 8 boards they can be overclocked to hit close to 300 MH  at a cost in power not much but some . the key there is keeping them cool enough to handle it .  with the flash from Jat  it would work . other wise the A4 is king . if the company hadn't gone bankrupt they were going to make a AlcheMiner 2 or some other name i forget that beat the A4 in speed and power usage and cost less to buy but i guess they didn't get the funding they had hoped for and went bankrupt. not Mat .  

Thanks top .

I will try screen, sounds good as firstaid...


Yes, i think too, that the MAT are the best miner for cheap/free power. And the best way is to use the MAT until they burns away, because at the moment they are powerfull and if the next scrypt generation comes out, nobody want this miner... I run my MAT flashed at clock 352mhz and get with 8 boards 250-260mh/s (336mhz@244mh/s) at pool, but the summer will come. It will produce to many heat, because this i want self made a simple watercool-heatsink at one side (maybe 2 boards on one watercool heatsink) and smal VGA/DDR Heatsinks at other side, that allow to remove 3 Fans and speed down the other.
Remove 3 Fans and speeddown the other will safe >70Watt and i can go with the clockspeed higher than 352mhz. I want try to target 384mhz and expect 280-290mh/s

The jstefanop flash is the lifesaver for MAT, without flash the MAT are unusable for most pools (->30% rejected on clever without flashing)

I will try screen, sounds good as firstaid...

that's the only way if you use ssh and want to close it out on your PC and keep everything running, it works with everything big downloads etc..just use screen before you do anything, your set.

Thanks  top..

Yes, but i want try your first clue with the bfg as linux service (http://blog.verticodelabs.com/raspberry-pi-bfgminer-service/)

if you don't charge to much I'll buy whatever  heat sinks are need from you the vga hs i can get . if you do and are willing to sell a few or share the design il have them made local .

I will post the CAD data, if the project starts. But they would be not optimized for perfect cooling, more for making the heatsink "at home" with usual homeworking tools like milling- and grindingmaschine, "tap and die" tools ...
Very difficult will be to make the heatsink planar without right tools. I dont want to use 100gramm thermal compound for each board like factory made by MAT .


I think we take an cooling radiator from automobile...  ;D

cool thanks I'll get them made by shops around me i have the tools, I'm to lazy and very good with designs but not good at designing. I won't steal your idea that's wrong :).

yea 7 to 9 inches of paste is a lot .I couldn't believe how much was on mine when i took a board off the heat sink.

Watercooled miner isnt epic idea ;-) And i think with the heatsink for MAT you cant make money, in best case you get your invest back. I asked an factory for tooling, they say me the mashine costs for me 50€ per hour ... I think we need 10-15min at maschine for each Heatsink part, we need minimum 2 parts.

And dont forget the costs for material...

Thank you for screen instruction, it works :-) But the service dont works... i get everytimes "unrecognized service " by trying to start the service.

I get the same with the service idea so i gave up on that one . or I got some thing about bad links with BFG, i could never fix.
I'll go back one day for the hell of it and do it . when i feel up to it and no i won't get bored trying.

I made ROI on mine and even got a nice feeling by donating a board to a school so I'm good there, i just wanted to cut down the noise more. i have a grind seed i still use form time to time you don't even know it's  running when i use it that i lowered the noise from the loud ass fans it came with, to all most no noise at all, more like normal PC fan noise and my replacement fans run at full speed. i put in bigger much quieter fans .

I mean the big one 25 MH script miner not the little 5 MH one .

I found a few new fans i might try sense i have a window fan blowing on top with the case open i don't  hear over the two stock fans l left in my AlcheMiner/mat miner .

thanks for the idea but it might not be good  sigh ,,, or not worth the cost . good idea but cost to much ? .


Thanks top .

The stock fans from MAT are good and can be very quiet... I remove the adhesive label from the fan and see 4 solder points. Only GND and 12V+ are soldered, we can solder Signal and PWM to the fans  :)

The costs are for the tooling factory... I dont want use there, but rather make it self. Yesterday i measure the hashboard and will make next days CAD sketch. It possible to make WC-HS on both sides of the board, but i think one side is enough, because too much canals leads to high pressure. The idea is one WC-HT for two boards.
But one WC-HS for each board it easier to realise and assembling...

I make any sketches for all ideas and then you can better imagine and discuss the better idea :)

i have tons of fans with Signal and PWM  I can use , why i wanted to see how you used that with one of these and that are better then the ones that come with the miner. i used them on other miners when i had them to cut noise like  s5 s3 etc even lower in noise i had s5 running very quiet the fans run around 2500 to 2800 rpms and not the 3300 or higher whining noise the stock fan had and they stayed below 60 c i would panic if they went higher i know it was over kill but that's was me. you could sleep in the  room next to  5 s5, that how quiet i got them they stayed below 60c .I sold them fast when I sold Off my S5 and stopped mining bitcoins then got luck bought this miner non working on the forums. all my S5 went ROI i never noticed till  a friend asked was it worth it. those were the days cheap miners and you could actually make something and not invest a lot.

two boards on one Hs might be better then two per board or like C1 two boards per HS can't say these things do get very hot

I think the ASIC can bear heatness. The stock Heatsink goes untouchable after few minutes at roomtemp, so it will be 55-65°C on the HS... If i loot at the thickness of thermal grease... than we have realy >90°C at chip and >100°C in the core of chip...

Every solution is better than one 1,5kg Alu-HS with 3mm TG  per board ;D Two boards will produce at all ~500w in heat and a part goes on the side without HS. So we Have 400-450w heat on a 2x huge surface (in relation of for example CPU-IDE with 90W on 10mm*10mm)  :)



Jstefanop is alive  :D He got his realy merit coins. Thank you again Jstefanop for your job!

hello,

can anyone help me find the Alche_FPGA_v2_flasher.svf file from jstefanop. tried to contact him but had no luck to get an answer.
 i will pay or donate for his work and the file..

thanks for your help,
 stephan

I PMed you.

Without knowing much about cryptocurrency, my friend obtained a trailer loaded with used mining equipment. There were lots of ASIC devices including some AlcheMiner systems. I think he already sold 1 AlcheMiner before he really looked into what it could do. The one he's left with probably has some bad cards, but we want to see if we can figure out which ones are good or bad. I know even less about cryptocurrency than my friend, but I'll be helping him the best I can. I'll try to familiarize myself with all this and I hope I'm not a burden to you all.

Looking at the AlcheMiner we still have, the boards had already been modified to remove the 8-pin power connections and they were replaced with thick gauge wires coming from PSUs. Because lots of USB UART adapters and rPis were included, I suspect the boards are already running jstephanop's custom firmware. I suspect I'll just have to update to the latest version to be sure.

Some of the hardware is visibly damaged and it's possible all of the boards are bad. If there are failures as we try to set it up, I won't know if it's due to bad hardware or due to my lack of understanding. I'll want to be sure I'm doing everything correctly.

If I understand correctly, the README doesn't really apply for the latest firmware. Is that right? Where should I start?

Thanks!

Hello everybody,

I'm ready to flash my Alcheminer, only the flashfile is missing.
jstefanop, are you still reading here and would you please PM me?
I would be happy if I got an answer!

Regards
derDaniel

Yes I'm here...just PM me :p

Hallo,

i'm totaly new in this totaly noob  ;D. my hobby is a bit electronics and stuff, bult my self 3D-printer and co2 lasercutter. but mining is new to my (sorry for my bad Englis, i'm dutch)

last week i buy 2 MAT blades with 2 USB wired to it, the 2 USB goes to a powered hub in to a rpi. so i think (and hope) that the blades have a FPGA update from superman Jstefanop  ;).

i tray to run it but my program in linux skils are noob, i try to make it work with Minera, but its havy to understand. i reed this post a lot and also the total post "AlcheMiner/MAT New Firmware and BFGMiner Port Discussion" van Jstefanop.

do sombody know a post a bit easier to read oubout this matter, is it poseble to connect the blades to a normal pc, for testing, so that i can learn more about Bfgminer ( i use win 10).
I have a lot questions, but were is a good start for this matter

a play a bit with putty, to tray to install bfgminer (but if i tray to connect to Minera via putty, i stuk by the password, so no install bfgminer custum  ???)

well you read i m a totaly noob in this materie, but if sombody have the patience and the time...  ::)  every tip is welcome

(i have some gridseed 5 chip miners that i connekt to a other rpi and Minera, i works fine. that is my only experience for now)

please help  :)

thanks for reading my post

Hello,
does anybody know the root password for alcheminer/MAT miner?
I have make a update and now sudo don't work. I can't make anything.

Or can I reset the System. Or is there a image for sd-card?

Can anybody help?

root pw is never set. Log in as admin/admin and set an root pw if needed.
Sometimes its set, but if set, than its root/root or root/toor.

jstefanop, are you still reading here? Please check your private messages, thanks!
And I think it's no problem with rpi as controller but the flashfile is missing. I will pay or donate for his work and the file.

Same problem but I found no solution without rpi as controller. See Alchemist updated support added for RPI with a broke controler (https://bitcointalk.org/index.php?topic=1468120.0)

Good question. I hope anyone has more details.