[GUIDE] GridSeed 5-Chip USB, Blade & Black Miner Support/Tuning

[wolfey2014]

I'm interested - could they be hashing slower or reporting "blank shares" if they have absolutely no fan around them? (at 850MHZ)

No problems here running with no fans at 850MHz. Should only be warm to the touch @ around 85 to 95*F or so. No big deal. They are made to run at 60W so.....with fans of course.

I'm overclocking mine at 1000MHz with no errors and fans powered by 5V with no issues.

One other thing. I found more stable operation by allowing them to run warm instead of ice cold.
This is not unusual where electronic components go.

What you probably need to do is reset your comm port FIFO buffers to a slightly lower setting.
I have found - 14 for Transmit buffer and 8 for Receive buffer works great for 850MHz and above.

Good luck!
Wolfey2014

[tc61]

Any of you guys running gridseed's and cards on the same computer?

I am running cudaminer with 4 cards and 7 gridseeds, but dont see the pool I'm mining with picking up the right hash rate. Its like -950k .

Should I be using different workers for each?

Thanks

TC

[tc61]

Wolfey, can you explain how to change the buffers in windows 7?

[wolfey2014]

Wolfey, can you explain how to change the buffers in windows 7?

Sure.
Start/computer/properties/device manager/ports (comm & lpt)
right click comm port/properties/port settings/advanced
receive buffer = 8
transmit buffer = 14
OK / OK
right click/disable
wait a sec for windows to reset it
right click/enable
wait a sec for windows to reset it

repeat for each comm port

close device manager

start miner/mine/make money

this settings are good for overclocking 850 and above.

remember, you blow it, you eat it   

Wolfey2014

[toxic0n]

- SD Formatter (link) clean up your SD Card. At least a 4GB SD.
2 - Download the SCRIPTA Image (link)
3 - Win 32 Disk Imager (link) and write the scripta image on the SD Card.
4 - Put the SD Card into your Raspberry.
5 - SSH access on port 7722, user: root / psw: scripta
6 - Use WinSCP (link) to move over the latest rasp cgminer for gridseed (https://db.tt/UygLkqwd) or Use PuTTY (link)
Code:
wget https://db.tt/UygLkqwd -O cgminer
7 - Go to the location where you copied over your cgminer and do "chmod 777 cgminer"
8 - Go to the SCRIPTA Web GUI, under Miner hit Miner commands, STOP
9 - Go to the location where you copied over your cgminer and run it from there using these commands:
Code:

After following these steps, is the BTC mode supposed to be disabled? Just wanted to make sure.
Also, is there a patched version without the latest client.reconnect vulnerability or can I compile one myself?

Thinking about it, can we use IP Tables on RPi/Scripta to allow connections to the pools we setup?

[usao]

getting 361.7kh/s cgminer 850 clock ltc mode only

That's about what I get, but im worried about the HW errors. I do get a lot of them, about 1-2K over 24 hours at that speed.
When I go down to 800, I only get about 10-20 in a 24 hour period.
Do the HW errors cause any permanent or cumulative damage to the pod?

Had the same problem with my GS5's.
Adjust your comm port FIFO buffer settings.
First try setting Transmit buffer down to 14 - that might do it.
If it doesn't completely handle it,
reset Receive buffer to 8 also.
Then you should be good to go.
After you adjust the FIFO's, disable and enable the port so the settings will take.
Works great for me on my Win 7 laptop via 13 port hub to 6 GS5's.
Good luck!
Wolfey2014

My GSDs are running on RPI with the HASHRA image. All I have is a web interface, you cannot login (or at least I don't know any login details).

[wolfey2014]

getting 361.7kh/s cgminer 850 clock ltc mode only

That's about what I get, but im worried about the HW errors. I do get a lot of them, about 1-2K over 24 hours at that speed.
When I go down to 800, I only get about 10-20 in a 24 hour period.
Do the HW errors cause any permanent or cumulative damage to the pod?

Had the same problem with my GS5's.
Adjust your comm port FIFO buffer settings.
First try setting Transmit buffer down to 14 - that might do it.
If it doesn't completely handle it,
reset Receive buffer to 8 also.
Then you should be good to go.
After you adjust the FIFO's, disable and enable the port so the settings will take.
Works great for me on my Win 7 laptop via 13 port hub to 6 GS5's.
Good luck!
Wolfey2014

My GSDs are running on RPI with the HASHRA image. All I have is a web interface, you cannot login (or at least I don't know any login details).

uname: Pi
pword: hashra

[usao]

On another note, I hear that the RPI cannot use more than a 2-level powered hub. Im not sure why this is, and I was wondering what's the maximum number of GSDs which an RPI can run?
Im assuming you could get 8x 7-port hubs and plug 7 of them into the first which would give you 49 ports within the 2-layer requirement? Anyone tried this successfully?

[usao]

uname: Pi
pword: hashra

Thanks, ill give this a try tonight and see what's running under the covers.

[AJMiles]

Posted my setup for others to see...
https://bitcointalk.org/index.php?topic=519093

Helpful guide tho since I am still tuning it up.

Next Step: Put them in a case, lol.

[fastcore]

Going to take my fan off tonight, way too loud and it appears I don't need it for scrypt mining.

[miner765]

How the heck do you write that huge hashra image to an SD Card?

[SetecX]

Hey guys. New here and to all this stuff. Got my gridseeds today from zoom hash and I have been having a hell of a time trying to get them going. They mined for about 5 minutes and then the pi stopped responding and wifi was dropped. Was using scripta and I could not get it to say anything other than miner down. Decided to abandon that and go for the hashra image. I need to ssh in to setup my wifi but user:Pi and pass:scripta only yield: Permission denied, please try again.

Now I don't know what the hell to do or what image to go with. Any info or help would be greatly appreciated.

[suchmoon]

Hey guys. New here and to all this stuff. Got my gridseeds today from zoom hash and I have been having a hell of a time trying to get them going. They mined for about 5 minutes and then the pi stopped responding and wifi was dropped. Was using scripta and I could not get it to say anything other than miner down. Decided to abandon that and go for the hashra image. I need to ssh in to setup my wifi but user:Pi and pass:scripta only yield: Permission denied, please try again.

Now I don't know what the hell to do or what image to go with. Any info or help would be greatly appreciated.

If you're using the hashra image then the password should be hashra.

[Axion_Zen]

Hey guys. New here and to all this stuff. Got my gridseeds today from zoom hash and I have been having a hell of a time trying to get them going. They mined for about 5 minutes and then the pi stopped responding and wifi was dropped. Was using scripta and I could not get it to say anything other than miner down. Decided to abandon that and go for the hashra image. I need to ssh in to setup my wifi but user:Pi and pass:scripta only yield: Permission denied, please try again.

Now I don't know what the hell to do or what image to go with. Any info or help would be greatly appreciated.

mine running well with the gc3355 cg miner and raspian with the stability fix ..scripta seems to need some work yet

[SetecX]

Thanks for the replies. I meant to say I used pw hashra but I typed scripta instead. For some reason I can't get in with hashra as the pw. Do I need to specify a different port or something? After getting nowhere for hours, I decided to just start mining with the zoomhash image for now. So far it is working good. As soon as I can get into this damn hashra via ssh I will probably switch to that. Or perhaps revisit scripta some day.

[jamieb81]

really nice setup Dark, I'm impressed

[SVK]

Hi,
as you know Wolfey has done fantastic job on modding his GDs.

He is using 0.125W 38k resistor.
I can buy this resistor locally http://www.maplin.co.uk/p/metal-film-06w-39k-ohm-resistor-m39k

This one is 0.6W 39k and I'm not sure if difference in W makes any difference . 0.125W and 0.6W.

Can I use 0.6W instead of 0.125W ?

Thank you very much for your help

[wolfey2014]

Hi,
as you know Wolfey has done fantastic job on modding his GDs.

He is using 0.125W 38k resistor.
I can buy this resistor locally http://www.maplin.co.uk/p/metal-film-06w-39k-ohm-resistor-m39k

This one is 0.6W 39k and I'm not sure if difference in W makes any difference . 0.125W and 0.6W.

Can I use 0.6W instead of 0.125W ?

Thank you very much for your help

Thanks for your kind words.
As I stated in my PM's back to you, .6W 39K should be fine.
The main purpose of the wattage spec of 1/8W resistor is that the physical size is not too big to fit and the wires on the resistor are not too big to fit over and solder to the solder points on the pcb.
De-solder the 36K and replace it with the 38/39K resistor. You can solder it across the two solder points put there for the resistor / capacitor network. They left the capacitor out during manufacturing so there are two extra points one can use to solder the resistor wire across them.

Simply solder the new resistor in place like I did in the attached pics.

Here are the pics of my handy work. Please excuse the left over resin (black stuff) around the resistor connections. I didn't have any pcb cleaner on hand at the time, but the resin won't hurt a thing as it is completely non-conductive. Just looks a little bit messy  
All mods  - Resistor - Jumpers - Pencil trace - 5V Fan connections


5V fan connections -
Red wire (+) intentionally connected to the tiny ferrite bead (FB25) as it's easier to solder to than any other point.
Fan start-up current is 140mA for 1.2sec then levels out to 78mA constant.
Tin your wire (if it isn't already) before you solder to the fuse terminal so as to keep from accidentally de-soldering the chip from the pcb. This way, it only takes a second to solder the wire to the terminal.

If this helps you, please feel free to show your appreciation by sending some coin.
Not mandatory but, very appreciated!
BTC = 13y5XhVuKGrRipbvYdcrvYDsx69rBPUbwR
LTC = LR6U7jB2Fb4pJYogbergqQHZgBRQ5UAqBG

Make these modifications at your own risk!

Peace!
Wolfey2014

Pea Ess, if you want me to make these modifications for you, PM me and we'll discuss it.
I am certainly qualified to do it, without bricking your pod of course!

[primer10]

Hi guys,
    Anyone managed to run Gridseed 5 Chip with full hashrate for LTC (300kh/s) with reduced BTC rates?

    According to specs for GC3355 (per chip):

 160 BTC Units
 4 LTC Units
 BTC mode up to 2.25G/s BTCHashRate, with 2.4W/GHash
 LTC mode up to 60K/s LTC Hash Rate
 Due-Coin mode up to 1.75G/s BTCHash Rate + 60K/s LTC HashRate, or up to 2.25G/s BTC Hash Rate + 38K LTC HashRate

   Anyone?