Friday, 14 September 2012

NASA'S Opportunity Rover Finds More Blue Barrie Spheres at Mars Crater - Were They Shaped by Microbial Life?

Posted on 18:29 by Unknown

NASA'S Opportunity Rover, older brother to the Curiosity Sends Back a new Pic. Is it a Breakthrough Discovery about Former "Life on Mars"? Or is it just another Pic of "Blue Barrie's" on Mars?. Looks like that Depends on Which Scientific Camp you Believe... Or Time Will Tell...

Don

September 14, 2012

Image of the Day: Blue Spheres Found at Mars' Crater --Were They Shaped by Microbial Life?

A discovery at The University of Western Australia that microbes helped shape rare spheres of iron-oxide on Earth may aid the newly landed Curiosity Rover in its search for the first verifiable signs of extra-terrestrial life in similar rocks on Mars. The spherical iron-oxide concretions shown above - dubbed "blueberries" - were first found on Mars in 2004 by an earlier NASA robotic probe - Opportunity Rover - providing some of the first evidence for liquid water on Mars.

Earth-based analogues for these "blueberries" are found in the Jurassic Navajo Sandstone near the Colorado River, Utah, where the concretions range in size from small marbles to cannonballs and consist of a hard shell of iron oxide surrounding a softer sandy interior. Previous theories suggested these concretions were formed by simple chemical reactions without the help of life.

However, new UWA research shows clear evidence that microbes were essential in their formation. This raises the possibility that Martian "blueberries" may not only reveal that water was present on Mars - but life too. UWA scientists David Wacey and Matt Kilburn used high-resolution NanoSIMS technology at the University's Centre for Microscopy, Characterisation and Analysis to show clear relationships in the Utah concretions between microbe-like forms and concentrations of biological elements such as carbon and nitrogen.

Mars 'Blueberries': Iron Baubles Spotted By NASA Opportunity Rover, Suggests Life Existed On Red Planet

The Huffington Post | By Sara Gates Posted: 09/14/2012 8:24 am Updated: 09/14/2012 8:36 am

Video, NASA Opportunity Rover, NASA Opportunity Rover Iron Blueberries, NASA Opportunity Rover Mars Blueberries, Life On Mars, Mars, Mars Blueberries, Mars Life, Mars Rover, Mars Rover Opportunity, Martian Blueberries, Martian Iron Blueberries, Martian Life, Space Life, Science News

It's a question that has plagued scientists for decades: Is there, or has there ever been, life on Mars?

While the answer to that question has often swayed from a slight "maybe" to a definitive "no," the recent discovery of iron 'blueberries' -- small, spherical hematite balls -- by the NASA Opportunity Rover indicates that life may have existed on Mars millions of years ago.

These 'blueberries,' as they have been dubbed, were initially thought to provide evidence of water on Mars, according to LifeScientist. However, researchers from the University of Western Australia and the University of Nebraska found that similar iron-oxide spheres analyzed on Earth are formed by microorganisms. If the same holds true for Mars, the iron 'blueberries' could not have plausibly been created without the existence of microbes on Mars.

NASA'S Opportunity rover, older brother to the Curiosity

: Mars rover discovers geological mystery | The Australian; Mars rover discovers geological mystery - Google Search; Mars rover discovers geological mystery - Google Search; Mars rover discovers geological mystery - Google Search; NASA'S Opportunity rover discovers geological mystery - Google Search; NASA'S Opportunity rover discovers geological mystery - Google Search; NASA'S Opportunity rover discoveries geological mystery - Google Search; NASA'S Opportunity rover discoveries geological mystery - Google Search; NASA - Watch NASA's Next Mars Rover Being Built Via Live 'Curiosity Cam'; Opportunity Nears Endeavor Crater - 7 Years and Still Roving | Space.com; Mars 'Blueberries': Iron Baubles Spotted By NASA Opportunity Rover, Suggests Life Existed On Red Planet; Did Mars ever have liquid water? Clay found on planet 'may have been formed by lava' - meaning life may never have started | Mail Online; Image of the Day: Blue Spheres Found at Mars' Crater --Were They Shaped by Microbial Life?; Aging Mars rover discovers geological mystery | The Raw Story

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Thursday, 13 September 2012

The Art Controller Relay Board AC-DC, 24 V DC/40 VAC, 5 A (10 A, normally-open, only) Timer Kit

Posted on 19:45 by Unknown

I came across a pretty good looking AC-DC, 24 V DC/40 VAC, 5 A (10 A, normally-open, only) Timer Kit, made by from Evil Mad Science. It sounds like it could be used for many different types of Projects. It's called the Art Controller, check it out...

Don

Art Controller Soldering Kit

Self-contained relay board with digital timing

The Art Controller is a multitalented, stand-alone relay module with microcontroller based timing and logic. Easier to adjust and more versatile than most other low-cost time-delay relay modules, the Art Controller can switch AC or DC loads and is reprogrammable to handle the most specialized applications.

The Art Controller gets its name from its inspiration. It was originally suggested by San Francisco Bay Area kinetic artists Christopher T. Palmer and Nemo Gould as a stand-alone device for triggering activating electronic art pieces that need to run for a little while after a button is pressed or a coin is inserted into a slot. And while it can do that (very well), it can be used in countless other jobs where you need to switch on (or off) an electronic load with a relay and timer.

Standard features

Hardware features:

Recommended load rating: 24 V DC/40 VAC, 5 A (10 A, normally-open, only).
Screw terminals for relay contacts.
DIP switches to set timing.
Power indicator and relay state indicator LEDs.
On-board 5 V regulator; runs from 7-15 V DC, or can be run from 5 V directly.
Screw terminals for trigger and input power. Location for optional DC power barrel jack.
Preprogrammed AVR Microcontroller (Atmel ATtiny2313A), with 6-pin programming header

Standard timing features:

Time delay can be set from 1 second to 31 hours.
Time delay is set by DIP switches; no need to guess and check timing with an adjustment dial.
Auxiliary cancel-trigger input, halts operation immediately.
Can be triggered by any low-going signal, or external button, switch, or coin acceptor.

Versatile operating modes:

Can be run as a one-shot or repeating (automatic cycling) timer.
Can be configured to cancel the trigger if a second trigger input is received.
Can be set to automatically trigger at power-on.

And, that's just with the standard firmware. You can customize every bit of the Art Controller's behavior to your heart's content by reprogramming the microcontroller. (See additional details below, under the heading "Programming the Art Controller.")

Usage

Timing:

Read More...
http://evilmadscience.com/productsmenu/tinykitlist/580

Art Controller Usage

Jump to: navigation, search

This page is part of the documentation for the Art Controller kit.

Timing:

The relay timing of the Art Controller is performed by the internal clock of the on-board microcontroller, and the delay time is configured with the DIP switches. Using the DIP switches, it is possible to select delay periods ranging from 1 second to 31 hours.

The DIP switches have five numeric values (1, 2, 4, 8, and 16 seconds), and three multipliers (×6, ×10, and ×60). The numeric part can be adjusted to add up to any value between 1 s and 31 s, and the multipliers allow these values to be scaled up into the following ranges of nominal delay times:

1 s — 31 s, in 1 second increments.

If none of the three multipliers is turned on, the delay time in seconds is given by the sum of the switches that are on; a value that can range between 1 and 31. Note that the minimum value of the delay is 1 s; if you select a delay of "0," it will give the same result as though you has selected a value of 1.

6 s — 186 s (3 minutes and 6 seconds), in 6 second increments.

To enter this range, turn on only the ×6 multiplier.

10 s — 310 s (5 minutes and 10 seconds), in 10 second increments

To enter this range, turn on only the ×10 multiplier.

1 m — 31 m, in 1 minute increments

To enter this range, turn on only the ×60 multiplier.

6 m — 186 m (3 hours and 6 minutes), in 6 minute increments

To enter this range, turn on the ×6 and ×60 multipliers.

10 m — 310 m (5 hours and 10 minutes), in 10 minute increments

To enter this range, turn on the ×10 and ×60 multipliers.

1 h — 31 h, in 1 hour increments

To enter this range, turn on all three (×6, ×10, and ×60) multipliers.

Please note that all delay times are approximate. While delay times specified with the DIP switches are typically quite accurate near room temperature, the exact period does depend on operating temperature and can vary by as much as ±10%, towards the edges of the operating temperature range, -40°C to 85°C.

Unless configured otherwise, the behavior of the Art Controller is such that the relay coil energizes as soon as a trigger is received. It stays energized for one delay period (the length of time set by the DIP switches) and then turns off the coil until the next trigger is received.

Triggering:

The Art Controller can have its cycle triggered by an external button or switch, or by an external input signal.

To use an external button or switch: Connect the two pins of the Art Controller's trigger input to a normally open ("NO") button switch. When the button is pressed or the switch is thrown, it connects the two pins of the trigger input together, triggering the Art Controller.

Instead of hooking up a button, you can hook up any external logic-level signal to the trigger input, for example from a light sensor or motion sensor. The Art Controller will perceive a low-going signal the same as it would a button press.

Configuration options and auxiliary inputs:

Besides the trigger input and the timing DIP switches, there are four additional I/O pins that can be used as auxiliary I/O pins or as configuration jumpers:

Cancel Trigger. A low-going input on this line can be used to revert the Art Controller to the un-triggered (idle) state. If the input is held low (e.g., connected to ground), it will also prevent any new triggers from being accepted. You can use this to add on an "STOP" button, or you can connect it to a switch to temporarily lock-out the trigger button.
Trigger @ Reset. You can solder a wire between this pin and ground to configure this option. If configured, the Art Controller will register a trigger (as though you had pressed a trigger button) when it first powers on.
Start/Stop on Trigger. You can solder a wire between this pin and ground to configure this option. If configured, the Art Controller will treat a second trigger signal as a "cancel" signal. In other words, if you press a trigger button one time, the Art Controller begins its cycle, but if you press it a second time, it will stop the cycle. (If this option is not configured, additional triggers beyond the first will be ignored so long as a cycle is in progress.)
Repeat. You can solder a wire between this pin and ground to configure this option. Normally, when the Art Controller receives a trigger, it energizes the coil for the specified delay time and then goes back to the idle state. When the repeat option is configured, a trigger instead begins a continuous cycle where the coil is alternately energized and off, each for the specified delay period. The cycle can be halted by using the Cancel input, by pressing the trigger again (if Start/Stop on Trigger is configured), or by removing power from the Art Controller.

Mechanical relays and configuration:

The relay on the Art Controller is an electromechanical type: A mechanical switch that is flipped by an electromagnet when energized.

The relay is an "SPDT" type, meaning that it can be used either as a normally-open or normally-closed relay. When idle, the "Common" terminal of the output terminal block is connected to the "NC" terminal, and when the coil is energized, the "Common" terminal is instead connected to the "NO" terminal. When power is removed from the coil (or from the Art Controller as a whole), the relay reverts to its idle state.

Thus, depending how you hook it up, it can be used to either turn on or turn off an external load when the coil is energized.

Powering the Art Controller

The Art Controller requires DC power to operate the microcontroller and relay. It features an on-board linear voltage regulator and accepts input power in the range of 7-15 V DC. (A 9 V or 12 V DC power supply will work nicely.) Your power supply should have the capacity to supply up to 125 mA.

If you prefer, it is also possible to instead configure the Art Controller to operate directly from a regulated 5 V DC power supply by omitting the regulator during assembly. (See build instructions for additional details.)

The Art Controller has an on-board two-pin screw-terminal block for connecting to power. You can also add an optional barrel jack (sold separately) for connecting to a plug-in power supply.

Typical power consumption is approximately 95 mA when the coil is energized and 13 mA when idle.

Contact ratings and safety

While the relay contacts are rated for AC loads of as high as 120 V (or higher, under some circumstances), we have labeled the Art Controller for loads of up to 40 V AC. Do not exceed this value without providing an external housing that protects fingers and foreign objects from exposure to that voltage. If you choose to exceed our rating (at your own risk), be certain that you have thoroughly addressed the safety issues and taken any additional measures as necessary to ensure that the board can be operated safely. At a minimum, your external enclosure should prevent unintended access to the relay terminals and the underside of the board.

The relay shield is labeled with a current rating of 5 A. However, as per the relay's datasheet, it can be safely operated as high as 10 A (AC or DC) if configured strictly as an N.O. (normally open) relay, with nothing connected to the N.C. terminal.

Please refer to the relay's data sheet (PDF) for additional specifications.

Go there...
http://wiki.evilmadscience.com/Art_Controller_Usage

Art Controller Assembly Instructions

Jump to: navigation, search

This page is part of the documentation for the Art Controller kit.

[hide]

1 Assembly procedure

[edit] Assembly procedure

We'll go line by line through the kit components. This guide assumes that you have had some soldering experience. If not, or it's been a while, you may also want to look at pages 2 and 5-7 of the Bulbdial clock assembly instructions, which go over basic tools and technique. And, if you really are a beginner, there are plenty of good tutorials on line, like this one.

[edit] 0. The simple relay shield kit

Here are all the components that make up the kit:

You can also go to the Bill of Materials for the full list and quantities. We'll be adding components to the various locations labeled on the circuit board.

[edit] 1. First step: Install the three 1k ohm resistors

Art Controller

This page is the central documentation site for the Art Controller from Evil Mad Science.

Main details about the Art Controller kit

Announcement article at Evil Mad Scientist Laboratories
Art Controller Store Page at Evil Mad Science

Assembly Instructions

Art Controller Assembly Instructions.
Art Controller Hardware Variations: Alternative ideas to consider when building Art Controller boards.

Usage

Art Controller Usage.

Firmware

Art Controller Firmware
Art Controller Software Hacks: Alternative ideas for Art Controller firmware

Open Source Hardware documentation

Electrical schematics (PDF format): available for download here.
Circuit board design in gEDA: To be posted week of Sept. 10.
Art Controller Bill of Materials

Places for questions, answers, and sharing experiences

Support forum at Evil Mad Scientist Laboratories
Evil Mad Science Auxiliary Flickr Group where you can share photos of your Art Controllers in action!

Project Documentation

Toolbox

Go there...
http://wiki.evilmadscience.com/Art_Controller

Art Controller kit from Evil Mad Science: Art Controller: relay board with switches for timing - Hack a Day; The Art Controller | Evil Mad Scientist Laboratories; Art Controller - Evil Mad Science Wiki; The Art Controller Relay Board Kit; Art Controller Assembly Instructions - Evil Mad Science Wiki; Evil Mad Science Shop; Evil Mad Science: Product Directory; Bare Printed Circuit Boards; Art Controller Usage - Evil Mad Science Wiki

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CAIG CircuitWriter CW100P Pen - Draw traces on circuit boards, repair defective traces, make jumpers, shield electronics, design prototype circuits and repair rear-window heater traces

Posted on 18:33 by Unknown

I found a PC Board Repair Product, that I have never heard of before. It sounds like a great tool to have. Check it out...

Don

CAIG CircuitWriter CW100P Pen 7 ml

Brand: CAIG Laboratories | Model: CW100P

Overview

Draw traces on circuit boards, repair defective traces, make jumpers, shield electronics, design prototype circuits and repair rear-window heater traces.

CAIG CircuitWriter CW100P Pen 7 ml

The CircuitWriter Pen is a highly conductive polymer for use on a variety of applications. Draw traces on circuit boards, repair defective traces, make jumpers, shield electronics, design prototype circuits and repair rear-window heater traces.

Go there...
http://www.parts-express.com/pe/showdetl.cfm?partnumber=341-236

Parts Express - PC Boards & Etching: PC Boards & Etching in the Electronic Parts Department at Parts Express | 1445 - email091312,DKWS PC Boards,Email_Newsletter,Retail; Perforated PC Board 1-3/4" x 1-1/2" For #320-400 320-440; Perforated PC Board 4-5/16" x 3-1/8" For #320-430 320-470; CAIG CircuitWriter CW100P Pen 7 ml 341-236; Presensitized PC Board 6" x 9" Single Sided 055-110; Positive Type Developer Concentrate 2 oz. 340-144

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VirtualBox 4.2 is Here, with some Improvements

Posted on 16:20 by Unknown

VirtualBox 4.2 is out and ready to Download Now. I like the sound of the Improvements and Bug fixes. And I was going to Download VirtualBox 4.2 and Update my aging, VirtualBox 4.0.2 in my Fedora 14 Linux System. Because, there are more and more Linux Distro ISO's that wont run in my version of VirtualBox...

But, alas, 4.2 is only available for Fedora 16-17. I really need to get to installing Fedora 17 on one of my Hard Drives. It's just that I love my Fedora 14 Setup, with Gnome 2 and all of the Apps that I have installed. Anyway... If you want to try out VirtualBox 4.2. Here's some info on the Updates and what you will be getting into...

Don

Oracle VM VirtualBox

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2. See "About VirtualBox" for an introduction.

Presently, VirtualBox runs on Windows, Linux, Macintosh, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, OS/2, and OpenBSD.

VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria.

Read More...
https://www.virtualbox.org/

Download VirtualBox

Here, you will find links to VirtualBox binaries and its source code.

Go there...
https://www.virtualbox.org/wiki/Downloads

VirtualBox 4.2 for Linux

Go there...
https://www.virtualbox.org/wiki/Linux_Downloads

Guest Additions for Linux

Like the Windows Guest Additions, the VirtualBox Guest Additions for Linux are a set of device drivers and system applications which may be installed in the guest operating system.

The following Linux distributions are officially supported:

    Fedora as of Fedora Core 4;

    Redhat Enterprise Linux as of version 3;

    SUSE and openSUSE Linux as of version 9;

    Ubuntu as of version 5.10.

Many other distributions are known to work with the Guest Additions.

Oracle VM VirtualBox

The latest release is version 4.2.0.

On this page you can download:

Oracle VM VirtualBox

Freely available for Windows, Mac OS X, Linux and Solaris x-86 platforms:

Go there...
www.oracle.com/technetwork/server-storage/virtualbox/downloads/index.html

Changelog for VirtualBox 4.2

This page lists all changes of the VirtualBox 4.2 releases.
All branches: 4.2 · 4.1 · 4.0 · 3.2 · 3.1 · 3.0 · 2.2 · 2.1 · 2.0 · 1.6

VirtualBox 4.2.0 (released 2012-09-13)

This version is a major update. The following major new features were added:

Improved Windows 8 support, in particular many 3D-related fixes
GUI: VM groups (bug #288)
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset configuration (bug #8805)
Resource control: added support for limiting network IO bandwidth; see the manual for more information (bug #3653)
Added possibility to start VMs during system boot on Linux, OS X and Solaris; see the manual for more information (bug #950)
Added experimental support for Drag'n'drop from the host to Linux guests. Support for more guests and for guest-to-host is planned. (bug #81)
Added support for parallel port passthrough on Windows hosts
Enhanced API for controlling the guest; please see the SDK reference and API documentation for more information

In addition, the following items were fixed and/or added:

Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion
VMM: fixed a potential host crash triggered by shutting down a VM when another VM was running (only affected 32-bit hosts and 64-bit OS X hosts, 4.1 regression, bug #9897)
VMM: fixed a potential host crash under a high guest memory pressure (seen with Windows 8 guests)
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9; bug #9941)
VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests (e.g. old OS/2 releases)
VMM: support recent VIA CPUs (bug #10005)
VMM: fixed handling of task gates if VT-x/AMD-V is disabled
VMM: page fusion fixes
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content (bug #5561)
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and power off from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its name (bug #6541)
GUI: don't crash on terminate if the settings dialog is still open (bug #9973)
GUI: consider scaled DPI values when display fonts on Windows hosts (bug #9864)
GUI: if a bridged network interface cannot be found, don't refuse to start the VM but allow the user to change the setting immediately
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM (bugs #9364, #9604, #10491)
Clipboard: disable the clipboard by default for new VMs (see the manual for more information). It can be enabled at any time using the VM menu.
Settings: sanitize the name of VM folders and settings file (bug #10549)
Settings: allow to store the iSCSI initiator secret encrypted
NAT: improvements for the built-in TFTP server (bugs #7385, #10286)
NAT: fixed memory leak when disabling the NAT engine (bug #10801)
E1000: 802.1q VLAN support (bug #10429)
Storage: implemented burning of audio CDs in passthrough mode
Storage: fixed audio CD passthrough for certain media players
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
USB: don't crash if a USB device is plugged or unplugged when saving or loading the VM state (SMP guests only)
Solaris additions: added support for X.org Server 1.11 and 1.12
Solaris additions: switched to using an in-kernel mouse driver
Windows hosts: no need to recreate host-only adapters after a VirtualBox update
Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options
Windows Additions: fixed memory leak in VBoxTray (bug #10808)

Go there...
https://www.virtualbox.org/wiki/Changelog

VirtualBox 4.2 info from the Oracle VM VirtualBox User Manual

9.23 Other extension packs
Starting with VirtualBox 4.2.0 there is another extension pack, VNC, which is open source and
replaces the previous integration of the VNC remote access protocol. This is experimental code,
and will be initially available in the VirtualBox source code package only. It is to a large portion
code contributed by users, and is not supported in any way by Oracle.
The keyboard handling is severely limited, and only the US keyboard layout works. Other
keyboard layouts will have at least some keys which produce the wrong results (often quite
surprising effects), and for layouts which have signiﬁcant differences to the US keyboard layout
it is most likely unusable.
It is possible to install both the Oracle VM VirtualBox Extension Pack and VNC, but only one
VRDE module can be active at any time. The following command switches to the VNC VRDE
module in VNC:

Skipping to next VirtualBox 4.2.0 mention...

9.24 Starting virtual machines during system boot
Starting with VirtualBox 4.2.0 it is possible to start VMs automatically during system boot on
Linux, Solaris and Mac OS X for all users.

Skipping to next VirtualBox 4.2.0 mention...

14.2 Known Issues
The following section describes known problems with VirtualBox 4.2.0. Unless marked other-
wise, these issues are planned to be ﬁxed in later releases.
• The following Guest SMP (multiprocessor) limitations exist:
– Poor performance with 32-bit guests on AMD CPUs. This affects mainly Windows
and Solaris guests, but possibly also some Linux kernel revisions. Partially solved in
3.0.6 for 32 bits Windows NT, 2000, XP and 2003 guests. Requires 3.0.6 or higher
Guest Additions to be installed.
– Poor performance with 32-bit guests on certain Intel CPU models that do not include
virtual APIC hardware optimization support. This affects mainly Windows and Solaris
guests, but possibly also some Linux kernel revisions. Partially solved in 3.0.12 for
32 bits Windows NT, 2000, XP and 2003 guests. Requires 3.0.12 or higher Guest
Additions to be installed.
• 64-bit guests on some 32-bit host systems with VT-x can cause instabilities to your
system. If you experience this, do not attempt to execute 64-bit guests. Refer to the
VirtualBox user forum for additional information.
208
14 Known limitations
• For basic Direct3D support in Windows guests to work, the Guest Additions must be
installed in Windows “safe mode”. Press F8 when the Windows guest is booting and select
“Safe mode”, then install the Guest Additions. Otherwise Windows’ ﬁle protection mech-
anism will interfere with the replacement DLLs installed by VirtualBox and keep restoring
the original Windows system DLLs.
Note: This does not apply to the experimental WDDM Direct3D video driver available
for Vista and Windows 7 guests shipped with VirtualBox 4.1.
• Guest control. On Windows guests, a process lauched via the guest control execute support
will not be able to display a graphical user interface unless the user account under which it
is running is currently logged in and has a desktop session.
Also, to use accounts without or with an empty password, the guest’s group policy must
be changed. To do so, open the group policy editor on the command line by typ-
ing gpedit.msc, open the key Computer Conﬁguration\Windows Settings\Security Set-
tings\Local Policies\Security Options and change the value of Accounts: Limit local account
use of blank passwords to console logon only to Disabled.
• Compacting virtual disk images is limited to VDI ﬁles. The VBoxManage modifyhd
--compact command is currently only implemented for VDI ﬁles. At the moment the only
way to optimize the size of a virtual disk images in other formats (VMDK, VHD) is to clone
the image and then use the cloned image in the VM conﬁguration.
• OVF import/export:
– OVF localization (multiple languages in one OVF ﬁle) is not yet supported.
– Some OVF sections like StartupSection, DeploymentOptionSection and InstallSection
are ignored.
– OVF environment documents, including their property sections and appliance conﬁg-
uration with ISO images, are not yet supported.
– Remote ﬁles via HTTP or other mechanisms are not yet supported.
• Neither scale mode nor seamless mode work correctly with guests using OpenGL 3D
features (such as with compiz-enabled window managers).
• The RDP server in the VirtualBox extension pack supports only audio streams in format
22.05kHz stereo 16 bit. If the RDP client requests any other audio format there will be no
audio.
• Preserving the aspect ratio in scale mode works only on Windows hosts and on Mac OS X
hosts.
• On Mac OS X hosts, the following features are not yet implemented:
– Numlock emulation
– CPU frequency metric
– Memory ballooning
• Mac OS X guests:
– Mac OS X guests can only run on a certain host hardware. For details about license
and host hardware limitations, please see chapter 3.1.1, Mac OS X guests, page 43 and
check the Apple software license conditions.
– VirtualBox does not provide Guest Additions for Mac OS X at this time.
209
14 Known limitations
– The graphics resolution currently defaults to 1024x768 as Mac OS X falls back to the
built-in EFI display support. See chapter 3.12.1, Video modes in EFI, page 55 for more
information on how to change EFI video modes.
– Even when idle, Mac OS X guests currently burn 100% CPU. This is a power manage-
ment issue that will be addressed in a future release.
– Mac OS X guests only work with one CPU assigned to the VM. Support for SMP will
be provided in a future release.
– Depending on your system and version of Mac OS X, you might experience guest
hangs after some time. This can be ﬁxed by turning off energy saving (set timeout to
“Never”) in the system preferences.
– By default, the VirtualBox EFI enables debug output of the Mac OS X kernel to help
you diagnose boot problems. Note that there is a lot of output and not all errors are
fatal (they would also show on your physical Mac). You can turn off these messages
by issuing this command:
VBoxManage setextradata "VM name" "VBoxInternal2/EfiBootArgs" "
"
To revert to the previous behavior, use:
VBoxManage setextradata "VM name" "VBoxInternal2/EfiBootArgs" ""
• Solaris hosts:
– There is no support for USB devices connected to Solaris 10 hosts.
– USB support on Solaris hosts requires Solaris 11 version snv_124 or higher. Webcams
and other isochronous devices are known to have poor performance.
– No ACPI information (battery status, power source) is reported to the guest.
– No support for using wireless adapters with bridged networking.
– Crossbow-based bridged networking on Solaris 11 hosts does not work directly with
aggregate links. However, you can manually create a VNIC (using dladm) over the
aggregate link and use that with a VM. This technical limitation will be addressed in
a future Solaris 11 release.
• Guest Additions of version 4.1, 4.1.2 and 4.1.4 for Windows Thus VirtualBox WDDM
Video driver may be installed and kept in guest system if Guest additions uninstallation is
performed. This is caused by a bug in Guest Additions uninstaller.
Note: This does not apply to Guest Additions update, i.e. installing a one version of
Guest Additions on top of another works correctly.
To solve this problem, one should uninstall the VirtualBox WDDM Video driver manu-
ally. To do that open Device Manager, and check whether the Display Adapter is named
“VirtualBox Graphics Adapter ..“. If no - there is nothing to be done. If yes - right-clik the
VirtualBox Graphics Adapter in Device Manager, select “Uninstall”, check “Delete the driver
software for this device” and click “OK”. Once uninstallation is done - in Device Manager go
to menu “Action” and select “Scan for hardware changes” to make the propper (Windows
default) driver be picked up for the Graphics adapter.
• Neither virtio nor Intel PRO/1000 drivers for Windows XP guests do not support segmen-
tation ofﬂoading. Therefore Windows XP guests have slower transmission rates comparing
to other guest types. Refer to MS Knowledge base article 842264 for additional informa-
tion.
• Guest Additions for OS/2. Shared folders are not yet supported with OS/2 guests. In ad-
dition, seamless windows and automatic guest resizing will probably never be implemented
due to inherent limitations of the OS/2 graphics system.

Download the VirtualBox PDF Manual Here...

http://dlc.sun.com.edgesuite.net/virtualbox/4.2.0/UserManual.pdf

VirtualBox 4.2: VirtualBox 4.2.0 Released With Support For Drag'n'drop From Host To Linux Guests, More ~ Web Upd8: Ubuntu / Linux blog; Oracle VM VirtualBox; Downloads – Oracle VM VirtualBox; Chapter 4. Guest Additions; Changelog – Oracle VM VirtualBox; Linux_Downloads - VirtualBox; VirtualBox Downloads

VirtualBox - Oracle VM VirtualBox: virtualbox - Google Search; VirtualBox; VirtualBox - Wikipedia, the free encyclopedia; VM VirtualBox | Virtualization | Oracle; VirtualBox - VirtualBox; Downloads - VirtualBox; MD5SUMS; Linux_Downloads - VirtualBox; End-user_documentation - VirtualBox; VirtualBox share files - Google Search; Sharing_files_on_OSE - VirtualBox; User_HOWTOS - VirtualBox; Testing_Networks - VirtualBox; VDI Studio - A free VirtualBox image file editor; edit VirtualBox vdi - Google Search; VirtualBox download - Google Search; Oracle VM VirtualBox®; Chapter 4. Guest Additions

VirtualBox OSE: virtualbox-ose - Google Search; Editions - VirtualBox; VirtualBox - VirtualBox; Downloads - VirtualBox; VirtualBox-OSE-guest-4.0.2-2.fc14.i686 RPM; VirtualBox-OSE-guest-4.0.2-2.fc14.i686.rpm - Fedora 14 - Download; VirtualBox-OSE-4.0.2-2.fc14.i686.rpm - Fedora 14 - Download; virtualbox-ose conflicts with virtualbox-ose-guest-4.0.2-2.fc14.i686 - Google Search; http://dlc.sun.com.edgesuite.net/virtualbox/4.1.2/MD5SUMS

Virtual Box Images: VirtualBoxImages.com FREE Downloads | VirtualBoxImages.com; BLAG Linux And GNU 90000 VDI | VirtualBoxImages.com; blag - Google Search; Android OS 2.6.29 x86 Virtual Appliance | VirtualBoxImages.com

Virtual Machines: virtual machine - Google Search; What is virtual machine? - A Word Definition From the Webopedia Computer Dictionary; DonsDeals: Virtual Machine Manager; Virtual machine - Wikipedia, the free encyclopedia; VMware Virtualization Software for Desktops, Servers & Virtual Machines for Public and Private Cloud Solutions; Windows Virtual PC: Home Page; Virtual Machines, Virtual Server, Virtual Infrastructure; VMware Player: Run Windows 7, Chrome OS - Free Download for a Virtual PC

QEMU a generic and open source machine emulator and virtualizer that relies on dynamic binary translation to achieve a reasonable speed while being easy to port on new host CPU architectures: quemu - Google Search; About - QEMU; Manual - QEMU; Download - QEMU; QEMU on Windows; Download Qemu Manager; libguestfs, library for accessing and modifying VM disk images; http://www.ltsp.org/; Qemu Launcher - Summary [Gna!]; Virtual Machine Manager; qemu - Google Search; QEMU - Wikipedia, the free encyclopedia; QEMU is a processor emulator; virt-what - detect if we are running in a virtual machine

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September 14, 2012

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Contents

[edit] Assembly procedure

[edit] 0. The simple relay shield kit

[edit] 1. First step: Install the three 1k ohm resistors

Art Controller

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CAIG CircuitWriter CW100P Pen 7 ml

Brand: CAIG Laboratories | Model: CW100P

Overview

CAIG CircuitWriter CW100P Pen 7 ml

Oracle VM VirtualBox

Download VirtualBox

VirtualBox 4.2 for Linux

Guest Additions for Linux

Oracle VM VirtualBox

Changelog for VirtualBox 4.2

VirtualBox 4.2 info from the Oracle VM VirtualBox User Manual

Download the VirtualBox PDF Manual Here...