Topic: Bitmain L3+ Voltage Control Tool...Free :) - page 3. (Read 14077 times)

Is there a compiled version for A3 or is the compiled version of v3.2 from L3 + suitable?

make a script - turn off the fans (maximum speed) when rebooting

$$$

Unfortunately all I have are L3+'s, so I don't know.  If they are using the same pic, the answer is yes.  If you have one and want to try, it will tell you if it doesn't find the same pic version.  The L3 version expects a pic software version of 0x03, the A3 version expects a pic version of 0x81 and uses a slightly different protocol. 

Is the L3 and L3+ the same as far as using this tool? 

Hey all,
I took the work that jstephanop did for the L3, cleaned it up a bit to make it easier to script with (there is a quiet mode which just outputs values).  I then added support for the A3 based on the work that FNT did.  We now have a single program that will work with both the L3 and A3 (don't have a D3 but it may work on that too).

At this point I would call it pre-release since although I have tested it on my L3's and A3's, it has not had a lot of testing.  Some of the changes I made include timing changes in theory to make it faster, so I would be interested if you are seeing any error messages at all. 

Like any of this stuff, use at your own risk.

Code and binary are here: https://github.com/darval/bitmain-tools

@jstephanop @FNT
If you guys want to merge all this into a single repo, I am good with that.  Take a look at the changes I made and see if you see any issues, or are interested in merging it back into your versions.

So i still have some old L3's around here.  Will this work with the old original L3?

What exactly works?

I probably was not clear...if the price of LTC say reaches a point, where you can't mine it with the elec costs for the majority of the 'consumer' small guys

1-20 Bitmain units say...then that leaves Bitmain......centralized mining....likely with new 'supposed' 1.5gh units they will mine for 5 months over the summer

and allow us 'crumbs' of pre-orders in the fall ...after driving up difficulty another 30% say...thus, the choice is see all your pow-scrypt current miners scrap'd

and watch bitmain play these games and have to 'start over' with their products on their timeline in say late fall...

so my point to the 'voltage' fix...sure...it helps a lot....say you get 15% reduction in power..sure...it helps...but just saying...looks a bit rigged...Bitmain...coupons expireiing (most) june 1st, I think it is, etc, etc

and may not really matter much in the next month if trends continue..the end result is pow scrypt pretty much centralized to bitmain data halls and the rest of

the stuff doorstops ..remember we are looking at 30% difficulty rise per month....we saw this game by KNC in 2014 using pre-order money to make BTC Neptunes for

their data halls first and then release to thenpublic...they were good for 5 months and made 25% of cost back at best.....not exactly the same thing...but the intent to

control pow-scrypt seems to ben the same...as KNC BTC tricks ..back in the day...

I will get this stuff up eventually, electrician issues on the place I'm hosting and they have to get 160 L3+'s up (bigger folk than me) thus probably  be 2

weeks before a guy can get to these mods on my stuff

anyway, we will be the first to know I guess

I'll get the donation out as soon as 1) installed 2) and see what I'm making to give him appropriate $$$ he deserves... but a couple months more of sideways

in price with difficulty rises and especially if bitmain really does have supposed 1.5gh units for pow scrypt coming out this summer and same pre-orders for fall

that has me a bit concerned...hopefully I'm dead wrong in a big way...

later
brad

If I had access to my miners at my hosting location I would certainly give this a shot... And I would gladly donate to this effort.   So I am stuck paying through the nose for power I shouldn't have to consume.  

What is the average power savings so far with this mod?  I fired off an email to my support at my hosting location to ask them if they would be willing to perform this mod. 

I think your logic is a bit off If anything lower prices/profits will motivate people more to reduce voltages and increase efficiency. If your scraping by and can reduce power by 10-20% thats pretty big...of course 10-20% power reduction did not matter when the L3's were making 1k per month last year

I will donate as soon as me and my partner get around to making these tweaks...but as of now my partner is still setting up L3+'s in the box

and dealing with an electrican...with his stuff..if this keeps up ..the whole thing will be 'moot' anyway...my L3+'s that are up are making

53c a day after electric....just saying..others may be in despair and not really also be jumping on this mod...as we speak..for the same reasons as

me ....why bother improving the engines on the Titanic if the iceberg of difficulty is gonna sink the L3+ boat anyway...

IF we manage to get the LTC price say above $160 again, (where I'm making more than a $1 a day) you

may have some more motivated people...as to myself ..I watch this mess and basically am turning into a

'lump' of an unmotivated miner....ie (are the miners up ...good....goes back to bed pulls covers over his head)

Well I have mine OCd would this kill that?

Hi guys,

Finally, I got an A3 to work, other routines but work now for A3 and should also work for D3.
https://bitcointalksearch.org/topic/a3d3-voltage-modification-file-for-antminer-a3-and-d3-free-4032178

Bye, FNT

Agreed. Windows users just need winscp to move the file "set_voltage" from their PC download directory to their L3+ /config directory.  Drag and drop the file over from your PC to the L3+

Then use SSH or PuTTY to run the few commands listed on page 1.  Not difficult.

how do I read the chain voltage?

I tried :

root@antMiner:/config# ./get_voltage

but its says not found... FYI, I can apply voltage successfully..

I thought of reading it before applying changes...

Yep, well said philipma!

I have used it on about 20 L3+ so far.  That might go up based on reliability of the modded units. 
The big benefit for me is not the $ saving on electricity or any boost in hashrate. 
It reduces my overall temps and pulls my electrical current consumption back to safer levels. 
The drop in temps is very dramatic, 3-4 degrees C per board. 
I was planning to monitor my machines for a while more before donating, but it's worth .25 LTC and more to me, so here's my first transfer. 
There will be more if I'm still happy in a month or so.

https://live.blockcypher.com/ltc/tx/ab4d415f25773ceca707831a8600528366078fca2fba5fb5ccfb454eb393ad27/

so I was checking donations made or at least deposits made

https://blockchain.info/address/1LeA29mLjTFCyB5J6Yiq4TFtAck2VDPUZf

0.01412 btc since may 7

https://blockchain.info/address/14w9Lea6kdVzspJk8TQRe7qSYu9LhzJJsh

0.0042 btc since may 8

https://live.blockcypher.com/ltc/address/LQZpb8AqbggUmsdPKr28DzdNcRP7MJ8kEf/

.2762 ltc  last 10 days


https://live.blockcypher.com/ltc/address/LX5vpxrQE4eLRLPobKwZhw2comkKFCh3p4/

0.0633 ltc last 10 days


so

0.0183 btc =  150 usd

0.3395 ltc =    45 usd


so he has received a max of 195 usd in donations.

Consider that this software saves  me about 100 watts a miner  and I have 12 miners  = 1200 watts  = about 30 kwatts a day or 3.00usd a day at 10 cent a kwatt.

that is 90 a month.  I gave him .0042 btc or 35 usd so far.

If I could code this  I would want a few more then the 195  for the ltc alone.

So I think he will not be rushing to do more for us. @ op I will send you 0.0058 soon  which will be 0.0100 total  and that will equal 1 month of my power savings.

If people want D3 or A3  you could those him more coin.

Be sure to send to his address in his op  https://bitcointalk.org/index.php?topic=3546316.msg36338080#msg36338080

D3 and A3 - still not supported?

@Nazzer (and others as well) - what are your targets for HW errors? For nonce HW Error %, but also, number of HW errors per minute for any particular hash board.
I see that @philipma1957 says he tries to keep under 0.05% nonce HW error%. I think you are saying in this post you target 1%?

I have seen references to keeping under 1 HW error per minute, but not sure if this is per board or total HW errors per minute across all boards. I would think it important to know per board so I/we don't push any individual board too hard on HW errors.

I have thus far been trying to keep each board at less than 1 HW error per minute with Nonce HW Err % to 0.05% or less.

Also, I saw in the L3 thread, that in early 2018 - there was a change in L3+ has boards - type N and type S and that one or the other cannot be OCed as high as the other. Do you know how we can tell which hash boards we have and what max ranges of OCing can be accomplished on each?

Thanks!

BTW, I have tweaked 2 - L3+'s and 1 - L3++ (voltage and OCing) and have improved hash rate with lower watts - currently have dropped wattage use across the 3 by about 330watts! I have one more L3++ to tweak and may be getting another L3+ soon. Once I tweak the last L3++ and figure out my overall savings, I will contribute some BTC to @jstefanop for this cool software!