Order through webstore:GRIDSEED 115$(shipped) Worldwide, 37 USB Miners for 1200$ - page 5.

melmo

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Activity: 213

Merit: 100

Quote from: dyland on March 20, 2014, 04:15:09 PM

Melmo, you in Toronto?

I'd pay you to make the voltage mods to my units.

Sorry, I don't think I would trust myself to work on someone else's units because I'd be afraid of frying it. Those solder pads are surprisingly small - I almost didn't do the mod because I was shocked at how tiny they were.

MaxGen

member

Activity: 79

Merit: 10

For the voltage mod, are you just bridging the pads with solder, or are you adding some resistance?

Also, from your last post, am I correct in assuming you are running the PS at 220 for the savings? I don't think mine powered on at 220V

Thanks melmo

Quote from: melmo on March 20, 2014, 03:40:33 PM

A couple of tips: I noticed that the power supply has a switch on the side to select voltage. I had been running with it set to 220V, and was only pulling 58 watts from the wall. It was pretty stable like this at 850 MHz so I measured the voltage on one of the plugs and the power supply was only providing 10.8 volts. After switching to 110V, I was reading 11.9 volts and power usage went up about 10 watts.

After doing the voltage mod, I'm running stable at 401 Kh/s and pulling 82 watts at the wall for my 10 units.

dyland

full member

Activity: 238

Merit: 100

We must become the pitiless censors of ourselves.

Quote from: melmo on March 20, 2014, 03:40:33 PM

A couple of tips: I noticed that the power supply has a switch on the side to select voltage. I had been running with it set to 220V, and was only pulling 58 watts from the wall. It was pretty stable like this at 850 MHz so I measured the voltage on one of the plugs and the power supply was only providing 10.8 volts. After switching to 110V, I was reading 11.9 volts and power usage went up about 10 watts.

After doing the voltage mod, I'm running stable at 401 Kh/s and pulling 82 watts at the wall for my 10 units.

Melmo, you in Toronto?

I'd pay you to make the voltage mods to my units.

karanveer

member

Activity: 98

Merit: 10

Thanks melmo

check new prices..,
2070 shipped (no accessories)
2220 shipped (with accessories)

melmo

full member

Activity: 213

Merit: 100

A couple of tips: I noticed that the power supply has a switch on the side to select voltage. I had been running with it set to 220V, and was only pulling 58 watts from the wall. It was pretty stable like this at 850 MHz so I measured the voltage on one of the plugs and the power supply was only providing 10.8 volts. After switching to 110V, I was reading 11.9 volts and power usage went up about 10 watts.

After doing the voltage mod, I'm running stable at 401 Kh/s and pulling 82 watts at the wall for my 10 units.

karanveer

member

Activity: 98

Merit: 10

Quote from: dyland on March 20, 2014, 08:27:35 AM

is there any info on removing the fans?

Also, Karanveer, am i shipping yet?

Yes seems like a single fan would do based on what Maxgen and Melmo have done.
Have paid the seller and will be updating tracking info soon

MaxGen

member

Activity: 79

Merit: 10

Quote from: dyland on March 20, 2014, 08:27:35 AM

is there any info on removing the fans?

You'll need to remove the fan screws on the top, remove the screws on the botton that hold the 2 heatsinks together, then use a soldering iron with a small tip to remove the + and - wires from the circuit board. They are easy to remove, just touch the joint with the iron and the wires will pop off.

Temps are fine, I'm still getting 0% HW errors. Note only do this if you plan to run the units in Scrypt mode only. If you run in SHA256, you will need the fans!

dyland

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Activity: 238

Merit: 100

We must become the pitiless censors of ourselves.

is there any info on removing the fans?

Also, Karanveer, am i shipping yet?

MaxGen

member

Activity: 79

Merit: 10

The top units are cool, and the bottom units are slightly warm to the touch.

melmo

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Activity: 213

Merit: 100

Quote from: MaxGen on March 19, 2014, 09:10:34 PM

Removed all but 2 of my fans. Think I'll get rid of one of the Power Supplies next and follow melmo's lead and remove all fans and have a larger fan pointing at the stacks.

How well does that configuration work with the single fan on top of each stack? If you lift up the top 4 units and touch the bottom one, is it cool to the touch?

Stacking like this really saves a lot of space... I think I have room for 10 more, but I'm not sure if I have the cash for them

MaxGen

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Activity: 79

Merit: 10

Removed all but 2 of my fans. Think I'll get rid of one of the Power Supplies next and follow melmo's lead and remove all fans and have a larger fan pointing at the stacks.

melmo

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Activity: 213

Merit: 100

I removed the fans to reduce the noise and the amount of space required. I'm also running everything off one power supply.

After running for several hours half have zero hardware errors, and the other half all have less than 10. I'm running at 850 MHz and I just have the one case fan pointing at the two stacks. Without the fan the heatsinks started to get pretty warm but with the single fan they are all cool now.

melmo

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Activity: 213

Merit: 100

Quote from: MaxGen on March 18, 2014, 07:58:34 PM

I just followed this guide: https://bitcointalksearch.org/topic/m.5305449

step by step. At step 6, I did the fix at the bottom of the same post.

At 900, I had 3 units that were throwing errors. All miners are 0% errors at 850 though..

I had to back mine off to 850 as well. 888 also had a lot of hw errors, so I'm going to try something like 865 and see how that goes.

If anyone removes the fans, please post if the hardware errors go up. Right now each unit is drawing about 8 watts, hopefully the fan isn't really needed.

karanveer

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Activity: 98

Merit: 10

Quote from: melmo on March 18, 2014, 04:45:20 PM

I haven't got them set up yet, I'm still compiling cgminer

Great

Happy mining times

karanveer

member

Activity: 98

Merit: 10

Quote from: MaxGen on March 18, 2014, 07:29:15 PM

Mine came in today as well. No duty

Set it up in about 1 hour, however I trashed the controller and used my RPi with Scripta. Works like a charm.

Currently running at 850, but I will try 900. We don't need fans right? I can remove them if I am only running Scrypt I think. Cut down on noise and save energy.

great

I guess u could remove the fans.
Never thought of it ever before but Huh

and the new GB has raspberry Pi controller not the gridseed one

MaxGen

member

Activity: 79

Merit: 10

I just followed this guide: https://bitcointalksearch.org/topic/m.5305449

step by step. At step 6, I did the fix at the bottom of the same post.

At 900, I had 3 units that were throwing errors. All miners are 0% errors at 850 though..

when you get your Pi, I'll walk you through it in PM.

You can start by downloading the Scripta image in the post and W32DiskImager.
Use the diskimager program to write the scripta image to the SD card.

When I booted my Pi, I used an IP scanner to find what IP my DHCP server gave it and used my browser to connect. http://www.advanced-ip-scanner.com

dyland

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Activity: 238

Merit: 100

We must become the pitiless censors of ourselves.

Quote from: MaxGen on March 18, 2014, 07:29:15 PM

Mine came in today as well. No duty

Set it up in about 1 hour, however I trashed the controller and used my RPi with Scripta. Works like a charm.

Currently running at 850, but I will try 900. We don't need fans right? I can remove them if I am only running Scrypt I think. Cut down on noise and save energy.

Would you be willing to take me through the paces with a raspberry pi install?ps know where to get rasp Pi in toronto?

I have never worked with Pi or Linux that said--would be willing to tip...

Ps you know each miner has their own sweet spot for MHz? Worldlybedouin has written about it on the tech thread.

MaxGen

member

Activity: 79

Merit: 10

Mine came in today as well. No duty

Set it up in about 1 hour, however I trashed the controller and used my RPi with Scripta. Works like a charm.

Currently running at 850, but I will try 900. We don't need fans right? I can remove them if I am only running Scrypt I think. Cut down on noise and save energy.

melmo

full member

Activity: 213

Merit: 100

I've got one hashing at 380 Kh/s at 900 MHz. I'll get the rest running tonight.

melmo

full member

Activity: 213

Merit: 100

I haven't got them set up yet, I'm still compiling cgminer

Topic: Order through webstore:GRIDSEED 115$(shipped) Worldwide, 37 USB Miners for 1200$ - page 5. (Read 12752 times)