TL-WN823N Works out of box on Raspbian using powered USB Hub

Not sure the status of it on Arch

The issue isn't that the service isn't started the problem is more likely it is starting before the Pi gets an IP. And cannot update the time since it cannot reach the server.

It's sort of my understanding that everything pretty much has a hardware clock except the Pi so everything is kind of written to take advantage of that. So it isn't really all too easy to get the time updated at boot. You could purchase a RTC module for the Pi and the problem would be solved very easily but it costs money unfortunately.

It would be better to check the status of the service no sense enabling something that is already active.


The only thing you really should need to run is


Then open the web page

Trivia:


It will ask for the password twice but will run ntpd -s

From a Windows machine something like this is possible to setup a batch file or shortcut on your Desktop with Putty's plink installed. You would need to play around with it a bit but could possibly work. I need to get home to test it out.



Download plink from here http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

Create a batch file and paste the info into it modify where you downloaded plink I put mine in C:\ this way you run the batch file enter the pass twice and away you go. I think the possibility after it executes to open a browser on a specific site it even possible. Not sure though.


There is also some fixes available in this thread if Neil or anyone is interested:

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=53&t=30570 No time sync on boot when Pi is using WiFi

Think you have an issue with the date on the Pi

So long as the time is set it should I believe you could check


That should open it read only if not add sudo/

And see what pools are listed.

It basically runs a cron hourly and if the time is noon this file kicks off

/opt/minepeon/etc/cron.d/hourly/donate

It copies your config to a temp then copies the donation config and restarts cgminer for the allotted time then copies them back and restarts it again.

Well with work tying up 90% of my life 

Here's my best effort

Full Guide to MinePeon

http://www.raspians.com/full-guide-to-minepeon/

Something like that should update you.

I am not sure if it re-sizes or not. If not this will do it.


In fdisk,

    Press ‘p’ to print the partition table, take note of the number in the Start column of the row starting ‘/dev/mmcblk0p2′
    Press ‘d’ to delete a partition then enter ’2′ to choose the second partition
    Press ‘n’ to create a new partition, all the default options are fine:

    Choose ‘primary’ partition type
    Partition number 2
    The starting block should be same number you took note of in step 1 (It should be the default number so press Enter)
    The default ending block should be the last available block on the SD card, this will vary depending on what size SD card you have (Press Enter)

4. Press ‘w’ to write the new partition table and return to the bash prompt

Reboot now to force the kernel to recognize the new partition table.


Now you need to resize the file system



Should now show something like:

This seems crazy

http://www.adafruit.com/blog/2013/08/07/overclocking-the-block-erupter-usb-bitcoin-miner/

http://www.adafruit.com/adablog/wp-content/uploads/2013/08/Block_Erupter-hacking.jpg

I have seen comments with the Pi and USB 3 Hubs. A very small few have been said to work (Depends on what is plugged into them) quite a few won't.

I am not sure if the HUBS really support 1.1 or 2.0 operations that is up to the HUB manufacturer to prove. Ultimately almost no device like the Pi has a chip that supports 3.0 USB the chips are just too expensive. (It's basically a cell phone)

One test is take a powered Anker plug it into the Pi without anything in it then take a 2.0 HUB unpowered and plug it into the Anker then plug an ASIC into it. Can it mine? This is just something I would like to know But I think it would to a degree show the Anker doesn't really support 1.1 or 2.0 very well.

Note this has been known to work with Keyboards, and Mice that will not work in an Anker as well as other 3.0 Hubs. It should be that the unpowered 2.0 Hub is what is translating the devices that are not USB 3.

The date is off I believe it is being fixed in the upcoming release no clock on the Pi makes it hard

I think


Will work

or

Glad to help.

Also they just announced:

@Raspberry_Pi New post: Buy a Pi, get an 8GB NOOBS SD card for $5. http://www.raspberrypi.org/archives/4536 if anyone is tempted for another Pi

Short answer is start a new screen session


Then run it and CTRL+A D

screen -S {name of new screen}

Another way is the same that Adafruit uses with nohup and rc.local

http://learn.adafruit.com/piminer-raspberry-pi-bitcoin-miner/configure-auto-start

Not sure if this helps but

Prepare Your Pi To Send Mail Through Gmail

http://www.sbprojects.com/projects/raspberrypi/exim4.php

What happened to the calc page 404 not found? http://mineforeman.com/bitcoin-mining-calculator

Thanks for the link looks good and eventually I will start playing with the BB. I just think the Pi gets a bad rap it has quirks and is slow but is perfect for Bitcoins. Lowered costs = better ROI @ an exchange of $65 for the BeagleBone and it still needs just as much hardware as the Pi - One other upside to the Pi vs any other platform is the force updating it keeping it current. Fixing the bugs. They posted the other day some of the issues with Raspbian USB are worked out and a push will get that code out. But ultimately for Mining Arch is the way to go. Low overhead = less power consumption not much but it helps, very fast boot time, and with MinePeon I am finding the support is unrivaled. It comes down to if it really isn't broke why fix it or reinvent it. And since it just sits there mining it doesn't have to be fancier or more powerful than the Pi.

My opinion it's not the Pi or the BB it's the Hub. Low quality hubs provide low quality and will not be suitable for every application. The statement above the Pi hates USB the device didn't work until Minepeon? It's still the same Pi different OS? Also backfeeding power from a USB Hub really shouldn't happen that's why it's a powered Hub it doesn't need power from the source nor does it need to feed power back to the source. These hubs are intended to be powered or non powered the issue is you won't connect many devices to a hub that is solely powered from the source and not the Outlet.

The Pi is designed for a 1A power supply = Model B consumes upto 700mA the 2 USB Ports provide 140mA each that's 980mA of the 1A . This design accommodated for Keyboard, Mouse or Wireless low power consumption devices. So cheap devices.

You can safely back feed power to the Pi from the USB and make it the only source of power but a HUB that provides 1A back through that connection would be stealing that power from the other devices. I run an Atrix Lapdock and the Pi get's it's power solely from the Lapdock and have no issues. (It is a quality product better be they wanted $500 new luckily the price dropped to around $40 for a while)

If an ASIC needs 500mA typical 4 port Hubs come with a 5v 2A supply 500x4 = 2A that's a risky setup as you may get spikes and down goes reliability. Or just because it says 2A doesn't mean it really outputs that much it could be +/- 5%

The Pi is tricky because devices are assumed to be plug and play and 100% compatible but every device has different components, different chips, etc. I would imagine the BB has just as many quirks with devices as the Pi unfortunately it really is trial and error.

I use Raspbmc on one Pi it has a 4 port good quality D-Link hub but it can only power 2 slim external drives and a Bluetooth dongle for my Keyboard. Before it runs out of power. My laptop can output 1A most only output 500mA I can run 3 Hard Drives because the extra Amp gets the power from 5v 2A to 5v 3A but that Amp comes from the power supply on the Laptop. The solution is to get a 5v 3A power supply for the HUB and then my problem on the Pi is resolved.

The question I have on the Miners are they say 500mA but do they spike past that ever? Even for less than a second.

Thanks for the reply yes it's BTC and I was thinking the same about the HUB so hopefully I am going down the correct path. Is the Error column strictly Hardware Errors then?

I am helping someone out on the latest version on the status page it has these fields. I am curious what is the Error and Utility showing. When using a 10 port hub getting 731 errors on one device and 0 Under utility for all devices.

In fact all devices are showing a ton of errors from 2 to 1800 all 9 Asic USB's. Does anyone have any tips to get the Errors down and Accepted up. 3 Accepted 5400 Errors

Found this for Wireless setup would be handy on the Wiki  https://forums.butterflylabs.com/showwiki.php?title=Tutorials:Raspberry+Pi+-+Mining+with+MinePeon&viewfull=1&page=4&do=comments#post38317
 

Login: minepeon

Password: peon

You can verify your wireless card is detected:

* sudo lsusb



* sudo wicd-curses

Password: peon

Shift+P to go to Prefs

Wireless interface, write "wlan0" (Without quotation marks)

Press F10

Shift+R to refresh and see your wifi

Move the cursor to your wifi

Shift+right arrow to go to config

Activate Automatically connect to this network

Key: (write the wifi password)

Press F10

Shift+C to connect and if you obtain an IP everything is working fine.

Shift+Q to quit

Restart