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106  Hardware and U-Boot firmware / Hardware / Re: type of microSD for guruplug? on: May 19, 2010, 02:29:31 AM
maybe you have some howto for this?  Smiley

I think "Yes, he has :-)"
Take a look at http://plugcomputer.org/plugforum/index.php?topic=1642.msg10106#msg10106
107  General Category / General Discussion / Re: New Device Issues on: May 18, 2010, 11:59:18 PM
My serial port issue was I removed Flow Control - that solved the not being able to transmit from serial to the plug
I can confirm the ethernet port work via 100mb switch and not 1000mb switch.

Yes, its 115.200 Baud 8N1 noFlow-Control like on the Sheevaplug.
I also can confirm the Gigabit-Switch-Problem after getting yesterday
a DLINK igabit-Nway-Switch my Guru+ did also reboot...back to my old
100MBit Switch the Ethetnet-Port does work like before.
For me it seems to be a driver-issue not a power-supply problem...but
Gigabit uses more lines inside the CAT5-Ethernet cable than 100MBit does
108  General Category / General Discussion / Re: GuruPlug - Received Yours Yet? on: May 18, 2010, 06:37:24 AM
I got mine also today but without advertised free jtag module, which makes it quite useless because the unit doesn't even boot up a mini linux without jtag fiddling. At least it does not ask for an IP connected to my LAN. Am I asking for too much from a computer? At least I would expect some way of logging in via LAN...  Sad

Normally your Guruplug should catch a DHCP-Adress via Lan if you do conenct him to the upper port (eht0)
(if you got an active DHCP-Server.. e.g. in your Router?)
Otherwise you should see a open WLAN calles Plug-and something of the MAC-Address of your Guruplug.

You could find the Quickstartguide at the URL

Iam also find it curios to put the URL in the Quickstartguide which cant be found without the guide :-)
But Google and the homepage of the manufacturer of the Guruplug is your friend:

The login is root/nosoup4u
109  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 18, 2010, 01:43:28 AM
You are correct! I've been using 1G switches .... pulled out the ol' 16 port 10/100M router and all of the sudden it works fine -- no more rebooting.
because of the fact that I didnt own a Gigabit-Switch I used my 10/100 Switch and my Network Interfaces do work also...no reboot....
110  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 17, 2010, 01:27:11 PM
What now happens when you connect a cable to eth1? And which cable do you use? The one supplied or another one?
I did use another ethernet-cable.... a 1:1 CAT5 yellow color

I disconnected the cable from eth0 and connected it to eth1, but I didnt get an IP-Adress from my router.
So I reconnected the cable back to eth0 and did get the DHCP-Address and voila I can Login via SSH.

PS: I now that it would be silly to connect booth ports to the same switch/hub :-)
111  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 17, 2010, 11:05:27 AM
- Guruplug Server or Server Plus?
 - Is your plug on 110v or 220v+
 - Do you have ethernet connected? and if, only ETH0 or 1 or both?

Got no problem (Ok the heat of around 38 degree celsius) with a
- GuruPlug Plus
- 220V/50Hz (Voltmeter reads 216/217V)
- connected to the Ethernet at eth0 (upper port)

Did you connect the eth1 to the same switch/hub like the eth0?

Did you read something about the boot-sequence in this message:

112  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 16, 2010, 04:42:29 AM
What I found out;
 - If I put a cable in eth0, it doesn't keep working all the time

My Mac is conneted via WLAN to the Guru+ and the Guru+ itself is connected via eth0 (Upper Port) to
a switch which is connected to my Fritz!Box Router.

In this combination the Guru+ is runnign now for 21Hour (around 76.000 seconds in /proc/uptime)

But has the Sheevaplug a bigger cooling system as the Guru+ ? Or is it the little bigger case with more
air in itself because there are less components?

In some cases if have seen USB-WLAN-Sticks getting real hot....so could it be possible that the heat isnt from the cpu
but from the WLAN-Chip?

So if anyone knows how to disable the WLAN (and then when its really getting no mor power) we should take a
look at the temperatur..... I have never seen a hot Bluetooth-Stick.

I attached a weather sensor for temperature on the Guru+ and it has now 37.8 degree celsius -
but feels much warmer/hot than my SheevaPlug with 27.9 degree celsius (both at around 220V/50Hz)
113  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 15, 2010, 03:21:55 PM
I ordered a guruplug server plug in February and received it today. After power it 15-20 minutes on 240V it seems my plug is dead  Cry. No power, no lead, nothing on jtag or UART.

This day my Guru+ is running around 9 Hours (very hot for a plugcomputer) but
it still running:
sheevaplug-debian:/proc# uname -a
Linux sheevaplug-debian 2.6.32-00007-g56678ec #1 PREEMPT Mon Feb 8 03:49:55 PST 2010 armv5tel GNU/Linux
sheevaplug-debian:/proc# more uptime
30692.69 30546.20

The question is...will it run cooler if it is running on 110-120V....how about a stepdown-converter 220->110V?
Could this be a prolblem like on the Sheevaplug? (with or without external devices...where the WLAN/Bluetooth are the new (intern) external devices)?
114  General Category / General Discussion / Re: GuruPlug - Received Yours Yet? on: May 15, 2010, 05:54:24 AM
It's finally April, and I for one expect to receive my GuruPlug before the end of the month. I expect GlobalScale to have placed its production order at the conclusion of the Free JTAG offer/extortion March 1, and by now to have at least received if not begun to ship the first such units hot off the assembly line.

I ordered my GuruPlug Plus in March and did get it now. They sent it at the 05/10/2010 from the U.S. and here in Germany
arrived me at the 05/12/2010...but I could pickup it yesterday at FedEx...

The last month I did get a email from them regrading some FCC-problems, after that they will ship. And here it is now :-)
115  Hardware and U-Boot firmware / Hardware / Re: guruplug server plus arrived but died on: May 15, 2010, 05:33:45 AM
im wondering if anyone else who's seeing this is plugged into 240v (au)? cause mines getting fantastically hot...

Here in Germany my "power-meter" tells something about 216-217V 50Hz and my GuruPlug Plus is getting really warm and does a little
smell like very warm electronics :-((
My SheevaPlug which is running some weeks isnt hot as the GuruPlug :-(

Hope my GuruPlug doesnt die while he is getting so hot....

116  Hardware and U-Boot firmware / Hardware / Re: Poll: Sheeva Plug Power Supply failures - does the mains voltage matter? on: May 02, 2010, 11:37:45 PM
Iam running my Sheeva at 220/20V here in Germany.
But only with SD-Card and a USB-Soundcard (low Power Device).
An external USB-HardDisk should use his own power-supply.
117  General Category / General Discussion / Re: USB-Soundcard for the SheevaPlug on: February 16, 2010, 01:17:39 AM
Iam using the "old" iMic USB-Soundcard which I had from my old Apple Cube....
it working fine with debian

118  General Category / Application ideas and development Q/A / USB-Stick RAID and the Problem with /dev/sda1 on: August 05, 2009, 12:09:07 AM
I installed  my SheevaPlug with debian 5.0.2 and the U-Boot for booting from
SDHC-card. This configuration is working fine, but now I got a thing that I didnt understand:

After booting from SDHC-Card (and without any USB-Stick) I got a mount-point which is
named /dev/sda1 and mounted at /
But I think at / should the SDHC-Card be mounted which resides at /dev/mmcblk0(p1/p2)

The problem with this sda-Mountpoint is, when I insert a USB-Stick it also will be mounted as

I could see with "fdisk -l" the USB-Stick at /dev/sda1 with the right size,
but when I try to use /dev/sda1 together mit /dev/sdb1 as a mdadm-RAID
the stick doesnt seem to be recognized as /dev/sda1

So how can I tell debian/the sheevaplug to start the FIRST USB-Stick counting at /dev/sdb1 or
mounting (in the mountlist) / at /dev/mmcblk0(p1/p2) ?

For this time my way around the problem is to put at first a not-used USB-Stick in my external 4 Port-USB-Hub (which doesnt do anything as /dev/sda1) and then I do put my (at this time) 2
4GB USB-Sticks for a RAID as /dev/sdb1 and /dev/sdc1

With this configuration I could create and use my USB-Flashstick-RAID at the SheevaPlug USB-Port
which gives me a 8GB /dev/md0-Device:

fdisk -l

Disk /dev/mmcblk0: 8068 MB, 8068268032 bytes
233 heads, 20 sectors/track, 3381 cylinders
Units = cylinders of 4660 * 512 = 2385920 bytes
Disk identifier: 0x00000000

         Device Boot      Start         End      Blocks   Id  System
/dev/mmcblk0p1   *           1        3100     7222990   83  Linux
/dev/mmcblk0p2            3101        3381      654730   82  Linux 
swap / Solaris

Disk /dev/sda: 259 MB, 259522560 bytes
255 heads, 63 sectors/track, 31 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

    Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1          32      253386    b  W95 FAT32
Partition 1 has different physical/logical endings:
      phys=(1023, 254, 63) logical=(31, 139, 63)

Disk /dev/sdb: 4007 MB, 4007624704 bytes
32 heads, 63 sectors/track, 3882 cylinders
Units = cylinders of 2016 * 512 = 1032192 bytes
Disk identifier: 0x740f1bbe

    Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        3882     3913024+   b  W95 FAT32

Disk /dev/sdc: 4007 MB, 4007624704 bytes
32 heads, 63 sectors/track, 3882 cylinders
Units = cylinders of 2016 * 512 = 1032192 bytes
Disk identifier: 0x14e965e0

    Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1        3882     3913024+   b  W95 FAT32

Disk /dev/md0: 8013 MB, 8013742080 bytes
2 heads, 4 sectors/track, 1956480 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table

BTW: I dont know why the partition-tabel at /dev/md0 shouldnt be OK.
A fsck for this device did show that the device is clean.

Anybody else try to use a (USB-Stick)-Software-RAID on the Sheevaplug?

119  General Category / Application ideas and development Q/A / Re: DisplayLink integration? on: July 21, 2009, 02:10:50 AM
My ideas are to use PlugComputer:
1) As a status screen controller: Attach a display (via DisplayLink) and enable messages to be sent to the screen (RSS feeds, specific messages, etc).


the easyiest Way to do that (only Text-Mode) could be a cheap litte VGA-RS232-Controller:
and 2nd Link

Additionally there is Keyboard In and TV-Out....great for Msgs/RSS or Instant Messaging :-))

120  Hardware and U-Boot firmware / Hardware / Re: Loose mini-USB connector on: June 28, 2009, 07:58:33 AM
Luckily, I have another mini-USB-cable with a stem on it that is a mm or two longer than the supplied one,
and that one seems to fit acceptably. 
But, you're right: the mini-USB connector on the plug is recessed enough that not just any cable will
work reliably with it.

Got the same problem with the USB-Port. The USB doesnt seem to "snap-in" like on USB-Port on other devices.
All my USB-cables doesnt click-snap-in like on my mobile-phone ror card reader.
But one of my cables fits a bit better, so that I can use the serial port.
From my point of view the usb is a bit to much recessed into the case.
The connector itself seems to be completly fine soldered to the pcb.

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