Avalon A7 announced

[NotFuzzyWarm]

As Haggs said, -2 is the lowest value for voltage offset. If you look at the code Haggs posted it gives the accepted range each switch will use.

To drop lower you have to use the --Avalon7-voltage switch in Other Options. I went as low as 10 at which point the 721 would only start enough to run at 1.5THs. Using voltage 11 fired up all strings but put speed around 3.5THs. 12 with -2 as offset was the sweet spot for me with very low power use (and temps) and decent hash speed.

edit: for voltage adjustment the command code is
 --avalon7-voltage-level  <number>
 "Set Avalon7 default level of core voltage, range:[0, 15], step: 1")

You can see the result of different numbers by looking at the cgminer API log for the string Vin and Vout

[1714951324]

1714951324

[notabeliever]

Running my A721 in the Basement . I run a square 24" fan pointed to the miner on the intake side. I created a 3-sided frame around the miner using wood from an old toddler bed then draped styrofoam put 16 x 6' insulation panels on the 3 sides over the wood. (yes aware of fire hazard and researching Phils's way)

Run miner with these settings
Voltage Offset = -2
Min Fan 10%

Temp is 26/88
Fan is 3540rpm / 42%
Avg GHSasc is 6434

Run it on certain pools and the miner will hum nicely.
CKpool is one that loves these miners.

Also working on using a mini compac fridge to provide some cooling or a humidifier but again this is taking ideas and seeing if it is a worth while project.

[NotFuzzyWarm]

Just remember that any refrigerator is designed to keep things cool and do so by removing just a small amount of added heat load from warm food/drink -- NOT continuously remove significant additional heat loads! Food, drink, whatnot does not continuously generate more heat.

[yxt]

As NotFuzzyWarm has already written: The compressor is not designed for continuous operation...

[notabeliever]

Okay I see your point. The miner would suck all the cold air out faster than the compressor could generate more and with the door open would not be storing cold air. Its better to wait 6 mos for more cold weather as Phil would say

[goose1072]

I know it's not the best thing in the world but you ever considered the bucket a/c, I have seen a few good ones and all you need is a fan, bucket, pvc pipe and one of those cool gel packs.
might work out for one or two miners, look it up on you tube. A/C bucket

[BadgerHobbs]

I have an issue where my Avalon 741 is only hashing at around 3.6TH for some reason.

It is running off a Bitmain 1600W PSU so that is not the problem.

From what i can see from the log, 2/4 of the MW pieces are all 0, which i assume means that they are not hashing, which would explain the 50% speed.

I've updated the firmware, left it running with and without the controller plugged in, attempting to reset it somehow but it the issue still persists.

This is the log:

Code:

[Firmware Version] => Avalon Firmware - 20170310
    luci: ac134a1
    cgminer: 32e8ad3
    cgminer-packages: 5a94b8d
Reply was 'STATUS=S,When=1526539048,Code=70,Msg=CGMiner stats,Description=cgminer 4.10.0|STATS=0,ID=AV70,Elapsed=26204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,MM ID1=Ver[7411706-3162860]
    DNA[013f06349f5346f9]
    Elapsed[26206]
    MW[303987 303974 239490 303974]
    LW[1151425]
    MH[299634 0 0 509]
    HW[300143]
    DH[4.223%]
    Temp[35]
    TMax[86]
    Fan[2790]
    FanR[34%]
    Vi[1218 1217 1217 1217]
    Vo[4438 87 152 4480]
    GHSmm[3953.80]
    WU[50572.14]
    Freq[351.01]
    PG[15]
    Led[0]
    MW0[1052 1095 1060 969 941 1088 1098 1043 1058 1044 1022 967 1065 1049 1013 1088 1045 1018 1027 1114 1094 1026]
    MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW3[1054 920 1002 912 978 1001 1014 1001 932 952 900 920 940 943 985 937 918 964 933 1005 998 991]
    TA[44]
    ECHU[0 768 768 0]
    ECMM[2]
    FM[1]
    CRC[0 0 303824 0]
    PVT_T[21-78/10-86/79 0-126/0--41/-60 0-126/0--41/-60 0-73/11-80/77],MM Count=1,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=15032,AUC Temperature=29.60,Connection Overloaded=false,Voltage Offset=0,Nonce Mask=29,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=1,ID=POOL0,Elapsed=26204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=2583.00000000,Min Diff=1937.00000000,Max Diff=4000.00000000,Min Diff Count=984,Max Diff Count=39371,Times Sent=6303,Bytes Sent=1007112,Times Recv=7228,Bytes Recv=10490263,Net Bytes Sent=1007112,Net Bytes Recv=10490263|STATS=2,ID=POOL1,Elapsed=26204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=5,Bytes Recv=1327,Net Bytes Sent=145,Net Bytes Recv=1327|STATS=3,ID=POOL2,Elapsed=26204,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=0.00000000,Min Diff=0.00000000,Max Diff=0.00000000,Min Diff Count=0,Max Diff Count=0,Times Sent=2,Bytes Sent=145,Times Recv=5,Bytes Recv=1327,Net Bytes Sent=145,Net Bytes Recv=1327|'
[STATUS] =>
(
   [STATUS] => S
   [When] => 1526539048
   [Code] => 70
   [Msg] => CGMiner stats
   [Description] => cgminer 4.10.0
)
[STATS0] =>
(
   [STATS] => 0
   [ID] => AV70
   [Elapsed] => 26204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM ID1] => Ver[7411706-3162860]
    DNA[013f06349f5346f9]
    Elapsed[26206]
    MW[303987 303974 239490 303974]
    LW[1151425]
    MH[299634 0 0 509]
    HW[300143]
    DH[4.223%]
    Temp[35]
    TMax[86]
    Fan[2790]
    FanR[34%]
    Vi[1218 1217 1217 1217]
    Vo[4438 87 152 4480]
    GHSmm[3953.80]
    WU[50572.14]
    Freq[351.01]
    PG[15]
    Led[0]
    MW0[1052 1095 1060 969 941 1088 1098 1043 1058 1044 1022 967 1065 1049 1013 1088 1045 1018 1027 1114 1094 1026]
    MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
    MW3[1054 920 1002 912 978 1001 1014 1001 932 952 900 920 940 943 985 937 918 964 933 1005 998 991]
    TA[44]
    ECHU[0 768 768 0]
    ECMM[2]
    FM[1]
    CRC[0 0 303824 0]
    PVT_T[21-78/10-86/79 0-126/0--41/-60 0-126/0--41/-60 0-73/11-80/77]
   [MM Count] => 1
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 15032
   [AUC Temperature] => 29.60
   [Connection Overloaded] => false
   [Voltage Offset] => 0
   [Nonce Mask] => 29
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS1] =>
(
   [STATS] => 1
   [ID] => POOL0
   [Elapsed] => 26204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 2583.00000000
   [Min Diff] => 1937.00000000
   [Max Diff] => 4000.00000000
   [Min Diff Count] => 984
   [Max Diff Count] => 39371
   [Times Sent] => 6303
   [Bytes Sent] => 1007112
   [Times Recv] => 7228
   [Bytes Recv] => 10490263
   [Net Bytes Sent] => 1007112
   [Net Bytes Recv] => 10490263
)
[STATS2] =>
(
   [STATS] => 2
   [ID] => POOL1
   [Elapsed] => 26204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 5
   [Bytes Recv] => 1327
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 1327
)
[STATS3] =>
(
   [STATS] => 3
   [ID] => POOL2
   [Elapsed] => 26204
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 0.00000000
   [Min Diff] => 0.00000000
   [Max Diff] => 0.00000000
   [Min Diff Count] => 0
   [Max Diff Count] => 0
   [Times Sent] => 2
   [Bytes Sent] => 145
   [Times Recv] => 5
   [Bytes Recv] => 1327
   [Net Bytes Sent] => 145
   [Net Bytes Recv] => 1327
)#

[/code]

[Kuulani]

BadgerHobbs

Take a look at the PMU output in your log. It is in there as V_i and v_o Voltage in and out. Your V in is good on all 4 ports however your V out on ports 1 and 2 are way to low not providing enough power for 2 out of the 4 hash boards to initialize.

Hope that helps.

[yxt]

@ mod team
It would be nice if you would stop deleting my own postings from my self-moderated topic due to off topic, thanks

[lok8nusa]

I have an issue where my Avalon 741 is only hashing at around 3.6TH for some reason.

It is running off a Bitmain 1600W PSU so that is not the problem.
~

You'll probably want to ask here: https://bitcointalk.org/index.php?topic=3224256.0, the A-721, -741, -821, -841 Support thread.

I will suggest that you should try another PSU. That one may be defective.


Mine on!

[philipma1957]

I got a hold of 2 of these the other day. the 721s

my cost was zero

anyone have a good setting

to do say 5th at 700 watts?

don't feel like reading the whole thread.

[throwaway2]

I got a hold of 2 of these the other day. the 721s

my cost was zero

anyone have a good setting

to do say 5th at 700 watts?

don't feel like reading the whole thread.

Maybe try 12 @ -2 or 11 @ -1?

I run my 741 at 10 @ -2 and it does about 6.5th/s

from above:

To drop lower you have to use the --Avalon7-voltage switch in Other Options. I went as low as 10 at which point the 721 would only start enough to run at 1.5THs. Using voltage 11 fired up all strings but put speed around 3.5THs. 12 with -2 as offset was the sweet spot for me with very low power use (and temps) and decent hash speed.

[Stepan163]

Guys, tell me how to reduce the voltage more than the value of -2, read on the forum that you can fix the config, but I do not understand how to do it.
Thank!

[tomcat2]

In the configuration page
Enter in the more options

Code:

--avalon7-voltage-level 12

the level can be changed from 6 to 15 i think?
10 gives me around 6.2 th ( on a 741)
Just see what suits your gear.

[Stepan163]

Thank you very much dear friend !!
Have a nice day and good mood !!!!
You are very cool

[elokk]

Currently testing voltage offset +1

Sorry for the dumb question, but whats the difference between GHSasc and GHSav. I assume the latter stands for GH?S average?

Hi everyone,
Am new in ming BTC, I just acquire 9pcs of Avalon 841 with 13.5th/s. And as to my little research, I learn that I should be able to mine at least $5 in a day. I acquired 9 pcs with all together 121.5TH/S but surprisingly I can only make between $3 to $4 dollar in a day with 121TH/S.
Please I need a guide, is it what am doing is wrong or do I need more things to do that is the current profit rate to run 121.5TH/S.
I will appreciate forum support and guide.
Thanks

Attempting to calculate $ profits is not really feasible, just a guess. stick with calculating btc returns but keeping in mind that number will fluctuate with difficulty changes