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Topic: Official Avalon Technical Support Thread - page 14. (Read 48885 times)

legendary
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
I just used a soldering station to remove it. Takes 30 sec or so.

member
Activity: 61
Merit: 10
Is it still recommended to remove the f1 fuse on batch 2 avalons. 

New Avalon shipments should already have the fuse removed.
sr. member
Activity: 342
Merit: 250
Is it still recommended to remove the f1 fuse on batch 2 avalons. 
full member
Activity: 160
Merit: 100
My batch 2 Avalon sometimes stops mining until the watchdog restarts cgminer.  Cgminer output looks like:

-snip-

I'm running the 0519 firmware.  I have removed the F1 fuse.

Make sure you've disabled wifi as well.
legendary
Activity: 966
Merit: 1000
My batch 2 Avalon sometimes stops mining until the watchdog restarts cgminer.  Cgminer output looks like:


Code:
 [2013-06-17 12:12:54] Accepted 0c78fe3d Diff 20/16 AVA 0 pool 0                     
 [2013-06-17 12:12:54] Accepted 0c64d208 Diff 20/16 AVA 0 pool 0                    
 [2013-06-17 12:12:54] Accepted 0885bc37 Diff 30/16 AVA 0 pool 0                    
 [2013-06-17 12:12:54] Accepted 01a9c233 Diff 153/16 AVA 0 pool 0                    
 [2013-06-17 12:13:48] Avalon: Timeout on select in avalon_get_reset                    
 [2013-06-17 12:13:49] Avalon: Reset failed! not an Avalon? (0: 00 00 00 02)                    
 [2013-06-17 12:13:49] Avalon: Goto idle mode                    
 [2013-06-17 12:13:49] AVA0: FPGA controller messed up, 0 wrong results
 [2013-06-17 12:13:51] Avalon: Timeout on select in avalon_get_reset                   
 [2013-06-17 12:13:51] Avalon: Reset failed! not an Avalon? (0: 00 00 00 02)                   
 [2013-06-17 12:13:54] Avalon: Timeout on select in avalon_get_reset                   
 [2013-06-17 12:13:54] Avalon: Reset failed! not an Avalon? (0: 00 00 00 02)                   
 [2013-06-17 12:13:55] Avalon: Goto idle mode                   
 [2013-06-17 12:13:55] AVA0: FPGA controller messed up, 0 wrong results
 ...and so on...

I'm running the 0519 firmware.  I have removed the F1 fuse.

I'm thinking I'll try a different power supply and see if that helps.
legendary
Activity: 2955
Merit: 1049
summer is coming and the temperatures are rising
which temperatures and fan speed do you have in Avalon (and which temperature outside)
I have now the lowest Frequency of 256 and
Code:
Fan1 Fan2 Fan3   Temp1   Temp2 Temp3
1200 3240 3120     32     -1     50

ambient temperature outside ~26° C but there are coming ~35° C  Huh
heatwave...
legendary
Activity: 2955
Merit: 1049
is there any way to disable the blue led of the fan (with software)?
(in luci is:
Code:
LED Configuration:
Customizes the behaviour of the device LEDs if possible.
but how to disable?
TIA
full member
Activity: 250
Merit: 100
RockStable Token Inc
Ah, they have upgraded the picture! It used to show Version 1.2 of the Control Unit. Thanks again!
legendary
Activity: 1600
Merit: 1014
Thanks el_rlee! So P2 is unused, doesn't even have a header soldered to it.

I see you still have your F1 fuse on, the one that powers the USB-A connector. You should remove that. Get a cutter, and cut it in the middle.

I already took out my F1 Fuse, this picture is from the wiki - https://en.bitcoin.it/wiki/Avalon
full member
Activity: 250
Merit: 100
RockStable Token Inc
Thanks el_rlee! So P2 is unused, doesn't even have a header soldered to it.

I see you still have your F1 fuse on, the one that powers the USB-A connector. You should remove that. Get a cutter, and cut it in the middle.
legendary
Activity: 1600
Merit: 1014
full member
Activity: 250
Merit: 100
RockStable Token Inc

Thanks for your reply.
Temperature is measured on two of the heat sinks. Cgminer shows 3 temperatures, I guess the third one is on the control unit itself. Interesting is the numbering of the fans with number one being in the middle IIRC...

I am not near my miners, but P2 is either the LED's on the front of the housing, or if they are connected somewhere else, empty.

Thank you also. Yes, the third digital thermometer is on the Control Unit.

When you get the chance, please take a look at P2. It's exact location is shown on this picture:


legendary
Activity: 1600
Merit: 1014
Hello Avalon mining system users, I need a little help. On the Control Unit card, Version 1.5, there is a P2 header with 6 pins, near the JTAG1 and P3 headers. I know that the P3 header is for the thermal transistor that measures the temperature of one of the heat sinks. However, I don't know what the P2 header is for. Is there anything plugged onto this P2 header? Or are there jumpers? A picture of your Control Unit with the P2 header clearly showing would be a big help.

Thanks for your reply.
Temperature is measured on two of the heat sinks. Cgminer shows 3 temperatures, I guess the third one is on the control unit itself. Interesting is the numbering of the fans with number one being in the middle IIRC...

I am not near my miners, but P2 is either the LED's on the front of the housing, or if they are connected somewhere else, empty.
full member
Activity: 250
Merit: 100
RockStable Token Inc
What type are the thermocouples used on batch #2 heat sinks? Do they have any function besides regulating the fan speed?
I want to water-cool my Avalon - should I put in a thermocouple or can I use a fixed resistor for instance?
The digital thermal transistor/IC used is DS18B20+PAR, and here is the datasheet for it:
http://datasheets.maximintegrated.com/en/ds/DS18B20.pdf

The Control Unit reads the temperature from this 3-pin IC as digital values transmitted serially. From this precise reading, the Control Unit then determines how fast the fans should be going. The Control Unit can also determine if there is overheating, and can shutdown the system.

I would try placing the small thermal IC on your water-cooled heat sink. That way if the water cooling somehow malfunctions, the Control Unit can shutdown the system.
full member
Activity: 250
Merit: 100
RockStable Token Inc
Hello Avalon mining system users, I need a little help. On the Control Unit card, Version 1.5, there is a P2 header with 6 pins, near the JTAG1 and P3 headers. I know that the P3 header is for the thermal transistor that measures the temperature of one of the heat sinks. However, I don't know what the P2 header is for. Is there anything plugged onto this P2 header? Or are there jumpers? A picture of your Control Unit with the P2 header clearly showing would be a big help.
legendary
Activity: 1600
Merit: 1014
What type are the thermocouples used on batch #2 heat sinks? Do they have any function besides regulating the fan speed?
I want to water-cool my Avalon - should I put in a thermocouple or can I use a fixed resistor for instance?
member
Activity: 107
Merit: 10
I just flashed it to my Avalons and so far so good  Smiley
sr. member
Activity: 473
Merit: 250
Sodium hypochlorite, acetone, ethanol
Does anyone know the precise model number of the fans the Avalon units have in them stock or a possibly good replacement for them?

NMB-MAT 7
Model 4715KL-04W-B56
Minebea-Matsushita Motor Corporation


http://www.pccooler.cn/en/index.php/products/pc/fengshan/251-f126w-水晶.html  


when the two black fans are running at max speed , the 25 mm one starts running slower, sometimes even stops. I was worried the fan was broken, but it seems to be normal behavior.


member
Activity: 82
Merit: 10
Does anyone know the precise model number of the fans the Avalon units have in them stock or a possibly good replacement for them?

NMB-MAT 7
Model 4715KL-04W-B56
Minebea-Matsushita Motor Corporation
member
Activity: 83
Merit: 10
Waveform Type - Stepped Approximation to Sine Wave


is this OK for AVALON?

It all depends on the power supply. If the power supply has APFC (Active Power Factor Correction) it is highly recommended to use a UPS that outputs pure sine wave AC.

I believe that PFC power supplies should use true sine wave UPSs. The reason for this is that PFC power supplies require a much faster changeover time when the battery kicks in, and that due to the design of stepped sine wave UPSs, they were not always fast enough to satisfy the power supply. This could lead to the PSU shutting down when the battery tried to kick in. A stepped sine wave UPS wouldn't "damage" the PSU, but that it simply might not work, and that if it DID work, it might not "always" work. It all depends on the specific power supply. The UPS shutting down has happened to me when using a non sine wave UPS with a APFC power supply.

Most PSUs that you'd want to buy these days will have APFC.

The problem that I see here (and this has been discussed in another thread I believe) is that it takes a LOT of juice to keep an Avalon running so you're going to need a beefy UPS and even so most reasonably priced UPSs (1440VA) that you can attach to a 15 amp circuit are only going to be capable of keeping it alive for maybe a few minutes at full load (even less if you run it clocked at 300).

IMHO it's worth while to have a least one on a UPS so that if there is a brief blackout at least one unit is mining and you're not losing _as much_ money (in lost revenue).

Now as for what UPS to choose. Personally I recommend the APC SmartUPS series. I've been using them for a long time and they are very reliable units. The SmartUPS series output pure sine wave by the way.


I used to swear by APC too but lately I have heard a lot of complaints about APC's AVR - esp w/ high-end EQ, anybody else?

might wanna check these too : CyberPower CP1500PFCLCD  1500VA  /  900W   

this guy did some testing : Pure Sine Wave Or Not?  http://www.youtube.com/watch?feature=player_detailpage&v=4QlF5vJlXaA

this thing has smart AVR w/ pure sine wave, lcd, green tech...
I just got one, the CyberPower rep at a show said it's good to have about 50% over actual power consumption and it was good deal here : $199 (free shipping)
http://www.amazon.com/CyberPower-CP1500PFCLCD-Sinewave-Compatible-Mini-Tower/dp/B00429N19W/ref=sr_1_1?ie=UTF8&qid=1370053696&sr=8-1&keywords=cp1500pfclcd+ups+1500va+900w+pfc

please give me some feedback if your aware of anything else
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