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Hello! I recently moved homes and today at my new place when I tried to run my R909, unfortunately, it shows 0 chips found. I guess something went wrong during shipping. Anyway, I just dissembled everything. When it's connected to the power cable but without running the CGminer, Chip '1', '2' and '5' (which are on the same side) are hot while the other 3 chips are cold. I wonder in idle, should all chips be hot or cold? and what could possibly cause this ''half hot, half cold'' scenario? Many thanks! Picture of the dissembled board:  Did you ever find a solution for this? One of my R909 is displaying the 0 chips found this morning. It has been running fine since I purchased it at the beginning of this year. |
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Here are my stats.
"hashrate1m": "14T",
"hashrate5m": "12.7T",
"hashrate1hr": "12.8T",
"hashrate1d": "12.7T",
"hashrate7d": "10.7T",
"lastshare": 1686398476,
"workers": 2,
"shares": 44601863972,
"bestshare": 863487097.7614763,
"bestever": 453978164172,
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This is my first time trying one of these group runs at a block.
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My BCT Forum Name : yettihead
My Stake for Runs : 0.001 BTC for #016
My TXID for Payment : 5c049eee277aa6fbb806c4e64af35e19f0dd84dd8ce06eba4ad1918f0a1ac780
My PayOut Address : bc1qr4z7ujdwz7wawmp02m5g233yq2ttnphdmdll6v
My Vote for HashRate : 5 P
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Thanks,
yettihead
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I was thinking about ways to push this beyond the 2.4-2.5Th reported by other users. One way could be to use a bigger fan and adapter to funnel more air CFMs into the pod. For example a 120mm or 140 mm fan can push 2-3x air through the heatsinks, while still staying fairly quiet (<25db). I've seen some s9 space heater designs (skip to page 9) that are replacing the stock 120mm fan with 140mm fan to allow the machine to run quietly without compromising on cooling. Would like to know from others here, if this makes sense and is worth a try. -Aviral That is what I have done. I created an adapter to go up to a 92mm fan as the airflow increases from 55.5 m³/h for the 80mm up to 78.9 m³/h for the 92mm. The 120mm could easily be done, just trying to keep these somewhat small, but the airflow would increase up to 102.1 m³/h. I do have a 140mm fan I could experiment with, but the pressure drops. Almost everything I 3D print is for mining purposes.  |
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Anyone know where I can get a replacement voltage adjustment screw for one of these? I was messing with the one unit that has given me troubles and broke it. Not sure what I did but was having troubles with adjusting it so I grabbed a needle nose and well broke it. I am comfortable soldering a new one on or looking for someone local to do it. I just need to purchase a new one and I have no idea how to look it up.
Thanks
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~snip~ Good for you.  I haven't paid €300/stick just to put one aside accepting "this is how it is"...  I rather try to find an explanation why is one behaving so weird. There's a solution for everything. And yes, this is lottery and has to be fun not a struggle. You say that 7 of them are working fine and the 8th one doesn't work properly, right? Also that you're using the USB hub from GekkoScience?  One of the USB ports is designed to connect a fan, so it's power only. That could be an explanation for your issue. I am running 7 CompacFs right now on t2 Gekko hubs and my 8th stick does the same as yours. He made a typo I guess and he's using "2 Gekko hubs", if I'm right. Yes, that is correct that I am running 4 sticks on one Gekko hub on ports 2, 5, 7 &4. I have 3 sticks on the 2nd Gekko hub using ports 2, 7 & 4. The one stick I am having the issues with has never really been stable, it will always run for a while, but it slowly ticks down to zero eventually. While it is doing this the hash rate suffers. I will get back to working with it, just life is really busy right now with travel for work. The other 7 sticks just run at 540MHz without any issues. I would have to constantly go un-plug and re-plug this problem stick in. |
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[/quote]
this one is restarting with a reduced T until it gets to a point where the T is in the (-) minus range...
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I am running 7 CompacFs right now on t2 Gekko hubs and my 8th stick does the same as yours. I have played with it and I am not able to get it stable. I finally got fed up with it and I am just runnign the 7 sticks and it is humming along no issues. It just must be silicone lottery.
yettihead
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That is awesome!!! Congrats on the solo block
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I have been waiting for a couple months now for them to be in stock, if it is from 2018 and it works, I am ok with it.
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If anyone is interested asicpuppy has a couple of GekkoScience USB 7 port hubs in stock. I ordered one and it will be delivered tomorrow as I emailed him checking on the status and he let me know it had shipped. He also mentioned that he had a couple in stock and will update his website tonight. I do not know how many he has.
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I was watching that on ebay, the price was just a little to high. He kept listing it and if it dropped drown to around $500 I was going to jump on it.
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Good To hear as I hope to be able to pick up some more of the Compac Fs and the hub. I purchased a computer supply to power it. I am thinking of eventually having two hubs and 4 Compac Fs per hub.
I am using a SotMa hub and it is ok. At first I thought I had the Sipolar one. I have 3 units in it and getting between 800 and 900 GH/s total. Sometimes up to 1TH/S. When I put in 1 Compac F my usb meter showed over 3A. Not sure if this is sustained or not as this is just temporally until I can get a GekkoScience one.
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Hi all, with the difficulty to buy a good usb mining hub , I finally worked on my own design  main features : pci-e power connector 12V 3 power linear regulator 5A each 3 variable resistor to adjust 5V output Atmega328 with LCD to display data like power of each usb port like usb key power meter 4 ports USB and 2 with just power for raspberry or fan ports 1 and 2 share same 5V with usb hub data port 3 share same 5V with one usb hub data and port4 with just power (fan, raspberry) same configuration for port 5 and 6 I plan to add connector for fan because a thermal dissipator is need for the 3 linear regulator and a sensor to manage temperature It works since one week without any issue  Now I need program ATMega to display data and my prototype will be finish   Looks great, I am sure there would be many of us looking to purchase something like this. I am also waiting to get a GekkoScience hub and check everyday to see if I can purchase one. |
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