Mining on Rapberry PI

[zOU]

Just got up :p

What OS are you using on the RPI ?

Raspbian ?
Minera image ?

I've had a lot of issues with the Dlink DUB H7, I'm just using it with my RPI and U3 now.

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[bestcoin_59]

Just got up :p

What OS are you using on the RPI ?

Raspbian ?
Minera image ?

I've had a lot of issues with the Dlink DUB H7, I'm just using it with my RPI and U3 now.

Hello zOU

OS: Raspbian
RapberryPi: the old B (not B+) version.
Software: GEKKO-CGMINER (4.9.2)

Cheers,

Jeff.

[zOU]

have you done sudo rpi-update ?

just to make sure your RPI is up to date ?

[Guruclef]

It could be a crappy USB on amout of power.  Have you tried running 1 instead of three?  

That's what I would do is reduce amount of them and test it.  See what happens.  All usb hubs are not equal.

Even with one compac plugged on the HUB, it does not work. It only works when i plug the compac on the HUB after the Raspberry Pi is running. I also tried to plug the USB port of the HUB on the Raspberry Pi while the Raspberry Pi is running (having the compac already plugged on the HUB): it does not work either (even with just one compac).

It is all the more strange so as the compac (with its serial number) appears on the boot screen (when i turn the Pi on, and when everything is plugged).

Cheers,

Jeff.

What kind of USB hub do you use? (USB? 2.0? 3.0?) And does it have an external power supply?
I used to have weird behavior from my compacs when I just got them and it solved when I increased the voltage on them (via the potentiometer/screw), but I use an external-powered USB 2.0 hub from orico. I didn't increase the voltage too much because I don't have a way to actually measure the voltages now.

If your hub doesn't have external power, or if it is cheap, maybe you need more power to make the sticks work OK. As you can tell I'm just learning, but one way of getting more power to a stick if you don't have a good hub is using a Y-cable like this one: http://www.ebay.com/itm/221661361513

Also I've read somewhere that USB 3.0 hubs don't behave correctly sometimes.

[bestcoin_59]

have you done sudo rpi-update ?

just to make sure your RPI is up to date ?

Hi,

I upgraded the packages, but was afraid to update the kernel/firmware because of this:
http://www.framboise314.fr/installer-une-version-anterieure-du-noyau-sur-raspberry-pi/
Any way, the number version of my firmware is 817 (uname -a)

Cheers,

Jeff.

[bestcoin_59]

What kind of USB hub do you use? (USB? 2.0? 3.0?)

USB2.0

And does it have an external power supply?

Yes. Here is the HUB:
http://us.dlink.com/products/connect/7-port-usb-2-hub/

I used to have weird behavior from my compacs when I just got them and it solved when I increased the voltage on them (via the potentiometer/screw), but I use an external-powered USB 2.0 hub from orico. I didn't increase the voltage too much because I don't have a way to actually measure the voltages now.

If your hub doesn't have external power, or if it is cheap, maybe you need more power to make the sticks work OK. As you can tell I'm just learning, but one way of getting more power to a stick if you don't have a good hub is using a Y-cable like this one: http://www.ebay.com/itm/221661361513

Well it turns out that i encountered the same problem even if only one compac is plugged. Moreover, i never got any troubles when i (hot) plugged the three compacs on the HUB while the RaspberryPi is running, so it might not be a power problem.

That beeing said, i recently bought this cheap item:

http://www.amazon.fr/CARCHET-Voltm%C3%A8tre-Amp%C3%A8rem%C3%A8tre-Testeur-T%C3%A9l%C3%A9phone/dp/B00LHU0QRY/ref=sr_1_1?ie=UTF8&qid=8&sr=8-1&keywords=B00LHU0QRY

Also I've read somewhere that USB 3.0 hubs don't behave correctly sometimes.

I read the same...

Cheers,

Jeff.

[zOU]

have you done sudo rpi-update ?

just to make sure your RPI is up to date ?

Hi,

I upgraded the packages, but was afraid to update the kernel/firmware because of this:
http://www.framboise314.fr/installer-une-version-anterieure-du-noyau-sur-raspberry-pi/
Any way, the number version of my firmware is 817 (uname -a)

Cheers,

Jeff.

That's what I'm running on RPI2

Linux raspberry 4.1.13-v7+ #826 SMP PREEMPT Fri Nov 13 20:19:03 GMT 2015 armv7l GNU/Linux

[bestcoin_59]

Hi everybody

Although it might not be related to the slight trouble described above, it noticed on the Cgminer window console that the figures in front of "WU" (in the far right of the screen) one of the compac (i currently run three compacs) does not look like the other figures.

Here is what i got:
Compac 1 WU: 166/m
Compac 2 WU: 162/m
Compac 3 WU: 45/m (only ?)

I set the frequency at 210 Mhz and the hash rates of the compacs are all between 9-12Gh/s

Btw what does "WU" stands for

Have a great day

Jeff.

[enhu]

Had my Raspberry to which I installed puppy linux.

Has any of you did it will Arduino too?
Been  trying to learn about the board and so i installed its ID and tested few scripts to work with it lately. Maybe someone also had tried it to work with an Asic miner device.

[Jake36]

Hi everybody

Although it might not be related to the slight trouble described above, it noticed on the Cgminer window console that the figures in front of "WU" (in the far right of the screen) one of the compac (i currently run three compacs) does not look like the other figures.

Here is what i got:
Compac 1 WU: 166/m
Compac 2 WU: 162/m
Compac 3 WU: 45/m (only ?)

I set the frequency at 210 Mhz and the hash rates of the compacs are all between 9-12Gh/s

Btw what does "WU" stands for

Have a great day

Jeff.

If I remember right, WU = work utility or something like that.

Give the pot a little bit more of a turn on the low one and see if WU increases.

And why the Pi's have trouble with a lot of hub's, is some of the hub's back feed power to the Pi's. So you got the Pi trying to send power to the hub, the hub trying to send power to the Pi on the same cable and the hub usually wins and causes problems with the Pi.

The 1 usb 3.0 hub that I've found to work with the Pi 2 B and compac's, is the Superbpag 7 port 70W 2Amp per port hub. I only have the Pi 2 B, so don't know if it works with any other Pi models or not.

[ManualMiner]

You won't make anything.
It is not worth mining with a raspberry Pi,
Unless you are willing to use a 10000 block erupters.
Just buy an ASIC man.

[Biodom]

Hi everybody

Although it might not be related to the slight trouble described above, it noticed on the Cgminer window console that the figures in front of "WU" (in the far right of the screen) one of the compac (i currently run three compacs) does not look like the other figures.

Here is what i got:
Compac 1 WU: 166/m
Compac 2 WU: 162/m
Compac 3 WU: 45/m (only ?)

I set the frequency at 210 Mhz and the hash rates of the compacs are all between 9-12Gh/s

Btw what does "WU" stands for

Have a great day

Jeff.

If I remember right, WU = work utility or something like that.

Give the pot a little bit more of a turn on the low one and see if WU increases.

And why the Pi's have trouble with a lot of hub's, is some of the hub's back feed power to the Pi's. So you got the Pi trying to send power to the hub, the hub trying to send power to the Pi on the same cable and the hub usually wins and causes problems with the Pi.

The 1 usb 3.0 hub that I've found to work with the Pi 2 B and compac's, is the Superbpag 7 port 70W 2Amp per port hub. I only have the Pi 2 B, so don't know if it works with any other Pi models or not.

Superbpag also works on pi zero using a nonpowered usb 2.0 bridge (i used cheap 4 port Sabrent) in between.

[bestcoin_59]

Hi Jake36

If I remember right, WU = work utility or something like that.

Ok, thanks for the clue. A google research with "cgminer work utility" gave the me the following:
https://bitcointalk.org/index.php?topic=424095.0

Give the pot a little bit more of a turn on the low one and see if WU increases.

I tried. However i didn't notice any real change. Does it mean that the miner is faulty?

And why the Pi's have trouble with a lot of hub's, is some of the hub's back feed power to the Pi's. So you got the Pi trying to send power to the hub, the hub trying to send power to the Pi on the same cable and the hub usually wins and causes problems with the Pi.

In my case both the Pi and the Hub have their own PSU.

The 1 usb 3.0 hub that I've found to work with the Pi 2 B and compac's, is the Superbpag 7 port 70W 2Amp per port hub. I only have the Pi 2 B, so don't know if it works with any other Pi models or not.

Thanks for the information

[bestcoin_59]

You won't make anything.
It is not worth mining with a raspberry Pi,
Unless you are willing to use a 10000 block erupters.

I'm aware i won't get rich.

Just buy an ASIC man.

I my opinion, it's not as simple as that. First, the lattest Asics are quite expensive and the electricity
consumption of such devices are much higher. My goal, ATM, is to understand better BTC mining...

In fact i really wonder, whatever the devices people are mining with, if it's still possible to make profits...
I mean, even a Antminer S7 won't probably be sufficient in one or two years. Does anyone share the same
opinion?

Cheers,

Jeff.

[bestcoin_59]

Hi Biodom,

Superbpag also works on pi zero using a nonpowered usb 2.0 bridge (i used cheap 4 port Sabrent) in between.

Lucky you It looks as if you managed to get a Pi Zero. Even in UK it's nearly impossible to get a copy of the MagPi. Last week,
while i was looking through severals computer science magazines in my local newsagent here in France, no less than 3 people asked me (although i don't work for the store...), if i knew a way to get a Pi Zero

[Jake36]

Hi Jake36

If I remember right, WU = work utility or something like that.

Ok, thanks for the clue. A google research with "cgminer work utility" gave the me the following:
https://bitcointalk.org/index.php?topic=424095.0

Give the pot a little bit more of a turn on the low one and see if WU increases.

I tried. However i didn't notice any real change. Does it mean that the miner is faulty?

And why the Pi's have trouble with a lot of hub's, is some of the hub's back feed power to the Pi's. So you got the Pi trying to send power to the hub, the hub trying to send power to the Pi on the same cable and the hub usually wins and causes problems with the Pi.

In my case both the Pi and the Hub have their own PSU.

The 1 usb 3.0 hub that I've found to work with the Pi 2 B and compac's, is the Superbpag 7 port 70W 2Amp per port hub. I only have the Pi 2 B, so don't know if it works with any other Pi models or not.[/color]

Thanks for the information

No, it's probably just not enough power from the hub to do 3 @ freq 210 or the green. Or could be like one of my sticks, set them all by eye with the flat at about 10-11 o'clock with the usb pointing down at 6 o'clock. One stick would do crazy HW error rates no matter what, turned the pot 180 degrees (4-5 o'clock) and it runs with 0 HW errors.

A lot of hubs don't have the data (port between pc/Pi to hub for data) port isolated from the power for the regular ports. So they are also sending power back to the Pi's along with data on the syncing cable
IE: power from the Pi port going out ---><--- power from the hub port going out, so power coming from two sources on same the cable.

[bestcoin_59]

Hi Jake36

If I remember right, WU = work utility or something like that.

Ok, thanks for the clue. A google research with "cgminer work utility" gave the me the following:
https://bitcointalk.org/index.php?topic=424095.0

Give the pot a little bit more of a turn on the low one and see if WU increases.

I tried. However i didn't notice any real change. Does it mean that the miner is faulty?

And why the Pi's have trouble with a lot of hub's, is some of the hub's back feed power to the Pi's. So you got the Pi trying to send power to the hub, the hub trying to send power to the Pi on the same cable and the hub usually wins and causes problems with the Pi.

In my case both the Pi and the Hub have their own PSU.

The 1 usb 3.0 hub that I've found to work with the Pi 2 B and compac's, is the Superbpag 7 port 70W 2Amp per port hub. I only have the Pi 2 B, so don't know if it works with any other Pi models or not.[/color]

Thanks for the information

No, it's probably just not enough power from the hub to do 3 @ freq 210 or the green. Or could be like one of my sticks, set them all by eye with the flat at about 10-11 o'clock with the usb pointing down at 6 o'clock. One stick would do crazy HW error rates no matter what, turned the pot 180 degrees (4-5 o'clock) and it runs with 0 HW errors.

A lot of hubs don't have the data (port between pc/Pi to hub for data) port isolated from the power for the regular ports. So they are also sending power back to the Pi's along with data on the syncing cable
IE: power from the Pi port going out ---><--- power from the hub port going out, so power coming from two sources on same the cable.

Hi Jake36,

Thanks for your message. It turns out that the "WU" is still low even when i plug the weird compac directly on the Pi (without using the HUB). Moreover the HW errors are very rare. I mean how is it possible to have a low "WU" with very few HW errors?

Cheers,

Jeff.