[GUIDE] GridSeed GC3355 5 Chip Setup/power/windows/linux/rpi by UnicornHasher

[Dabs]

May I volunteer my escrow services if you guys are going to order a few hundred to a few thousand gridseed pods? Noted about the power supply, I'll go test it with one unit first.

[miaviator]

Hello guys,
How many gridseeds can I connect to following powersupply if they were running Scrypt-only/overclocked at 850Mhz (take 900, just to be safe)
12v 30A switching power supply
Is there any danger involved if I hook up too many?

Part 6: Power Usage, Clocks, Temps

Freq 900 Single Mode
~3.1Mh/s scrypt (Controller)
~3.1Mh/s scrypt (scryptguild)
103Watt

That was for 10 units.  103Watt at 120V is .85Amps (.085Amps each device) If you cut off the fan and use a higher rated PSU this would be 50-70 Watts vs 103 Watts.

Based on how high you want to load the PSU:
50% 30/2/.85*10 = 176 Devices
60% 30*.6/.85*10 = 211 Devices
80% 30*.8/.85*10 = 282 Devices
90% No
100% No
100%+ Go away

WARNING
12v 30A is 360W, so around 30 units max.
I think you mixed 120v and 12v in your computation.
Eric

Lol Thanks Eric

Wrong calculator:

Assume 10W per unit as a safe load so 36 units would hit 80-100% on your power supply at 900 clock.

I'll edit my above post.

And think a little next time.

[miaviator]

thanks mate, why would I cut of the fan though?
does it stay cool enough from the natural airflow it generates?

anyway, it's more than enough, I was looking for permission   to hook up 26 pieces (2 13port hubs on 1 RaspPI) on one PSU

26 is OK depending on your hubs power usage.

[Mymine]

any tips on how too hook up 26 units on one power supply?
that' a lot of wires ....

[miaviator]

any tips on how too hook up 26 units on one power supply?
that' a lot of wires ....

From someone else's post:

http://amzn.com/B004EAHJAG

[Mymine]

sweet
that's almost plug and play!
bought it

thanks

[jjj0923]

could someone PLEASE tell me exactly what type of USB Cable end goes into the gridseed so that I know what to buy when I visit Tigerdirect today - thanks. I can't make it out from any of the photos.

thanks

[chanberg]

could someone PLEASE tell me exactly what type of USB Cable end goes into the gridseed so that I know what to buy when I visit Tigerdirect today - thanks. I can't make it out from any of the photos.

thanks

mini usb is the plug that goes into the gridseeds

[wolfey2014]

I've been having a problem with my miners disconnecting and just showing "dispatching new work toGC3355 LTC core" and nothing else. WTF???

It started happening after I pointed them to ScryptGuild.com
Before that, they had pretty much "yay" hashed full time without any interruptions.

Does anyone know if a pool server can cause this to happen? Make them quit running by perhaps, quit sending work to them for a few minutes which causes them to just - hang?

I don't think it's the USB hub causing it.

This happened 6 hours after I signed up with ScryptGuild, then another 2 hours after that, then another 18 hours after that. It's not the USB hub or lack of power causing it.

To get them running again just now, I have re-set all the ports using disable-enable which saves me from having to physically unplug and re-plug each one. I'm going to figure out a way to make this problem 'auto detect this failure and run disable-enable for each port automatically so they keep on hashing.

I have also disabled the power saving feature on each 'root hub' in device manager just to make sure WinBlow$ doesn't cause it to happen too.

I'm using Win7. I don't know if XP allows one to make these types of config changes or not.

I"m not interested in putting up with this disconnect shyt! I am sure no one else is either

Wolfey2014

[usao]

any tips on how too hook up 26 units on one power supply?
that' a lot of wires ....

From someone else's post:

http://amzn.com/B004EAHJAG

The link points to connectors which are 2.1mm in size, I thought that they were suposto be 2.5mm? Anyone tried this specific connector to see if it fits?

[jwoodyu]

Has anyone successfully run these hanging off a Linux-CGMiner box that is also running GPUs? I am considering two instances of cgminer, one for my 280x cards and one for these?

Apologies if I missed this earlier in the post. I went through the whole thread and I think i have seen it implied.

Thanks,
Woody

[Blueman666]

any tips on how too hook up 26 units on one power supply?
that' a lot of wires ....

From someone else's post:

http://amzn.com/B004EAHJAG

The link points to connectors which are 2.1mm in size, I thought that they were suposto be 2.5mm? Anyone tried this specific connector to see if it fits?

2.1mm plugs do fit and I would say they are better really as a slightly tighter fit is a good thing. I would strongly advise against using those octopus cables though as the wires in them are so thin its a joke. Definitely useless for BTC mode and not even good for LTC only mode as even if they dont get hot you dont need any extra impedance to increase power line noise.

[yeahright]

I've been having a problem with my miners disconnecting and just showing "dispatching new work toGC3355 LTC core" and nothing else. WTF???

It started happening after I pointed them to ScryptGuild.com
Before that, they had pretty much "yay" hashed full time without any interruptions.

Does anyone know if a pool server can cause this to happen? Make them quit running by perhaps, quit sending work to them for a few minutes which causes them to just - hang?

I don't think it's the USB hub causing it.

This happened 6 hours after I signed up with ScryptGuild, then another 2 hours after that, then another 18 hours after that. It's not the USB hub or lack of power causing it.

To get them running again just now, I have re-set all the ports using disable-enable which saves me from having to physically unplug and re-plug each one. I'm going to figure out a way to make this problem 'auto detect this failure and run disable-enable for each port automatically so they keep on hashing.

I have also disabled the power saving feature on each 'root hub' in device manager just to make sure WinBlow$ doesn't cause it to happen too.

I'm using Win7. I don't know if XP allows one to make these types of config changes or not.

I"m not interested in putting up with this disconnect shyt! I am sure no one else is either

Wolfey2014

I know it isn't an issue with scryptguild as I'm running the gridseed I have on it and it's been running for 5 days straight.  The only difference is I'm running it on Linux on a pi :/ Sorry it doesn't really help since you are running windows but I can confirm no issues with scryptguild.

[pjcltd]

I've been having a problem with my miners disconnecting and just showing "dispatching new work toGC3355 LTC core" and nothing else. WTF???

It started happening after I pointed them to ScryptGuild.com
Before that, they had pretty much "yay" hashed full time without any interruptions.

Does anyone know if a pool server can cause this to happen? Make them quit running by perhaps, quit sending work to them for a few minutes which causes them to just - hang?

I don't think it's the USB hub causing it.

This happened 6 hours after I signed up with ScryptGuild, then another 2 hours after that, then another 18 hours after that. It's not the USB hub or lack of power causing it.

To get them running again just now, I have re-set all the ports using disable-enable which saves me from having to physically unplug and re-plug each one. I'm going to figure out a way to make this problem 'auto detect this failure and run disable-enable for each port automatically so they keep on hashing.

I have also disabled the power saving feature on each 'root hub' in device manager just to make sure WinBlow$ doesn't cause it to happen too.

I'm using Win7. I don't know if XP allows one to make these types of config changes or not.

I"m not interested in putting up with this disconnect shyt! I am sure no one else is either

Wolfey2014

Hi I'm running windows 7
With 10 gridseeds running on good usb 3 10 port hubs
I have pointed them at scryptguild for the last 24 hours and I have to say I'm very impressed with the returns I'm getting.

I have never seen the problem you are having are you running cgminer or cpu miner?

[Spotswood]

Anybody have a mechanical drawing of the (currently shipping) controller board and its mounting holes?

[yeahright]

Has anyone successfully run these hanging off a Linux-CGMiner box that is also running GPUs? I am considering two instances of cgminer, one for my 280x cards and one for these?

Apologies if I missed this earlier in the post. I went through the whole thread and I think i have seen it implied.

Thanks,
Woody

I don't have any GPUs but I can tell you I have successfully run two instances of cgminer on a RPi.  One cgminer for gridseed and one cgminer for dualminer each in their own screen session.  Both instances are hashing away with no issues.  I want to a cgminer that has support for gridseed and dualminer so I can run one but it's working so I can't complain.

[usao]

Lol Thanks Eric

Wrong calculator:

Assume 10W per unit as a safe load so 36 units would hit 80-100% on your power supply at 900 clock.

I'll edit my above post.

And think a little next time.

Guys from HashMaster are telling me the individual 300KH/s units (with fan) draw 20W per unit.
Other folks are telling me 7-8W per unit, you are telling me 10W...
Bit confused here. Has anyone actually measured the power or current when doing LTC only and when doing BTC and LTC together?
I would really like to get a more solid number. I have several HP 12V @100A server PSU's, which I thought I could purpose for these gridseed miners, since the included PSU is reported to be crappy.

Also, do some folks remove the fan and use a box-fan to cool a bunch at once?

[miaviator]

Lol Thanks Eric

Wrong calculator:

Assume 10W per unit as a safe load so 36 units would hit 80-100% on your power supply at 900 clock.

I'll edit my above post.

And think a little next time.

Guys from HashMaster are telling me the individual 300KH/s units (with fan) draw 20W per unit.
Other folks are telling me 7-8W per unit, you are telling me 10W...
Bit confused here. Has anyone actually measured the power or current when doing LTC only and when doing BTC and LTC together?
I would really like to get a more solid number. I have several HP 12V @100A server PSU's, which I thought I could purpose for these gridseed miners, since the included PSU is reported to be crappy.

Also, do some folks remove the fan and use a box-fan to cool a bunch at once?

Look in the power and temps section of the OP.

I clocked from 600-900 in single and dual mode and took a reading.

[IchibahnSLC]

Lol Thanks Eric

Wrong calculator:

Assume 10W per unit as a safe load so 36 units would hit 80-100% on your power supply at 900 clock.

I'll edit my above post.

And think a little next time.

Guys from HashMaster are telling me the individual 300KH/s units (with fan) draw 20W per unit.
Other folks are telling me 7-8W per unit, you are telling me 10W...
Bit confused here. Has anyone actually measured the power or current when doing LTC only and when doing BTC and LTC together?
I would really like to get a more solid number. I have several HP 12V @100A server PSU's, which I thought I could purpose for these gridseed miners, since the included PSU is reported to be crappy.

Also, do some folks remove the fan and use a box-fan to cool a bunch at once?

Look in the power and temps section of the OP.

I clocked from 600-900 in single and dual mode and took a reading.

Also, to be fair to everyone that gave you information, the wattage depends on the efficiency of the power supply.

[miaviator]

Lol Thanks Eric

Wrong calculator:

Assume 10W per unit as a safe load so 36 units would hit 80-100% on your power supply at 900 clock.

I'll edit my above post.

And think a little next time.

Guys from HashMaster are telling me the individual 300KH/s units (with fan) draw 20W per unit.
Other folks are telling me 7-8W per unit, you are telling me 10W...
Bit confused here. Has anyone actually measured the power or current when doing LTC only and when doing BTC and LTC together?
I would really like to get a more solid number. I have several HP 12V @100A server PSU's, which I thought I could purpose for these gridseed miners, since the included PSU is reported to be crappy.

Also, do some folks remove the fan and use a box-fan to cool a bunch at once?

Look in the power and temps section of the OP.

I clocked from 600-900 in single and dual mode and took a reading.

Also, to be fair to everyone that gave you information, the wattage depends on the efficiency of the power supply.

As stated in the OP and with usable measurements.  My readings are at about 80% efficiency.  I was running at 99 watts in single mode at 850 clocks.

Part 6: Power Usage & Temps

Power Usage and Speeds: Power is based on killowatt readings for the controller, USB hub and 10 devices using a Corsair AX1200 PSU.  Divide out the power factor for actual usage.  The speed reports are only based on a 5-10 minute sample time so add +/-10% variance.  You can see in the screen cap that the per device speed is completely crazy this is mostly the controller and device quality.  

Power Supply Efficiency: Corsair AX1200 80 Plus GOLD