Mar 30 2012

Simple Download Monitor (mod) – Version 0.21.2

Hello,

Recently I did some modifications to Simple Download Monitor. This modifications aloud the system to show a page "Your download will begin shortly" and starts the download after 5 seconds.

The frist version of it, breaks the "inline" option, so this release fix this bug.

I talked with Pepak, the creator of Simple Download monitor, and he told me that he will include my modifications on official release when he get some time.

Simple Download Monitor Modification

Abraços,
Matheus

Mar 20 2012

Image convertion to GrayScale/Binary/R/G/B

Hello,

This is a small exercice of Multimedia class (INE5431). We need to implement:

1) Transform the image to GrayScale
2) Generate one image to each component color (R/G/B)
3) Transform the GrayScale image to binary

To transform RGB to GrayScale we need to use this expression:

Y = 0.3R + 0.59G + 0.11B;

And them, to convert the GrayScale to Binary

if (Y > 127) {b = 1; } else { b = 0; }

If we want just one color component, we need to get all image pixels and leave just the component that we want, or just copy the component to a new image.

In this project, we access an image and we have some functions to do what we want, convertion to GrayScale, Binary, and Component RGB. From the source image, we create a buffer image of the same size to all images and we create a for to go over all pixels and make the transformation and put it to the new buffer image.

Read more »

Mar 17 2012

Arduino Documentary (2010)

Hello,

An interesting documentary that I just watched and recommend to curius about Arduino and Arduino enthusiast

Arduino The Documentary (2010) English HD from gnd on Vimeo.

Matheus

Sources: http://www.danielandrade.net/2011/01/09/arduino-the-documentary-2010/

Mar 14 2012

Brazilian “SOPA” canceled.

Good night

On the 6th, Walter Feldman proposed a law project similar to SOPA on Brazil (PL 3336/2012). But that generated messages from users and specialists.

Law that wants to “prevent” the piracy on internet blocking websites.

Fortunately all this messages and blog posts have made Walter Feldman to give up, on the 12 he asked to remove his law project PL 3336/2012

Good one guys,
Matheus

Sources:
http://www.camara.gov.br/proposicoesWeb/fichadetramitacao?idProposicao=535988

Mar 12 2012

Internet on Windows 8 Customer Preview using VirtualBox

Good afternoon,

If you have any problem with the internet on Windows 8 Customer preview on VirtualBox, change your Virtual Machine settings as follow:

Network - Attached To - NAT
Network - Advanced - Adapter Type - Intel PRO100/1000 MT Desktop (82540 OEM)

Restart your system and the internet should be working.

Best Regards,
Matheus

Mar 12 2012

Installing Windows 8 Preview on VirtualBox

Good Morning,

A few weeks ago Microsoft released a new version of Windows, the Windows 8 Customer Preview. Probably you are curious to see what is new on Windows 8, many sites are saying that this new Windows is a system that will run on tablets, smartphones and computers.

First of all, download your ISO file on:

Windows 8 Customer Preview - 64 Bits (English)

Windows 8 Customer Preview - 32 Bits (English)

Windows 8 - Customer Preview other versions

After download it, you can install it normally on VirtualBox, I used 20gb for hard disk, 2gb ram and 128mb for video. But checking the VDI size, I got 5gb, so probably you can install it with 10gb for hard disk.

A few websites as ExtremeTech refers to some specific configuration to run Windows 8, on my installation, I just used VirtualBox default settings and it works, but if you have any problem during the installation, try to use them.

1 - System - Motherboard - Enable IO APIC
2 - System - Motherboard - CHIPSet ICH9
3 - System - Processors - PAE/NX
4 - System - Acceleration - Enable VT-x/AMD-V
5 - System - Acelleration - Enable Nested Paging
6 - Display - Video - Memory 128
7 - Display - Video - Enable 3D
8 - Display - Video - Enable 2D

Now install it normally and enjoy your new Windows 8

Best regards,
MatheuS

PS:If you have problems to use the internet try this Internet on Windows 8 Customer Preview using VirtualBox

Mar 11 2012

Installing Ubuntu 12.04 Beta 1 on VirtualBox

Good Night,

Today I decided to try Ubuntu 12.04 (Precise Pangolin) Beta 1 on VirtualBox. This version will be a LTS version (Long term support) so the community are anxious to see it. The final version of Ubuntu 12.04 is scheduled to be released on April 26.

As I expected the installation on VirtualBox went smoothly, sadly the installation took longer then usual.

For now there aren't a lot of visual changes, I didn't noticed any change at all, the default graphic system still is Unity and on the VirtualBox it is heavy.

I tried the methods from Ubuntu 11.10 to go back to Gnome Classic, remove overlay scrolbar, change the menu buttons position and install the gconf-editor and all methods worked as a charm.

You can find the methods on:

Remove or disable the overlay scrollbar on Ubuntu 11.10

Change the menu buttons positions on Ubuntu 11.10

Going back to Gnome classic on Ubuntu 11.10

Best Regards,
Matheus

Mar 08 2012

Law that wants to “prevent” the piracy on internet blocking websites.

Good Night,

One more time the goverment are trying to "prevent" piracy on the internet blocking sites. The new Law Project PL 3336/2012 created by Walter Feldman wants the Registro.BR to have a system where anybody can denounces a website that goes against the law, the Registro.BR will be responsable to check the denounces and if they are true, it will notificate brazilian internet providers to block the website.

More specificall, Registro.BR will be responsable to receive denounces and check if it is true, with that, will notificate internet providers to block access to this websites, the internets providers have 5 days to block the access otherwise will get a fine. If it is a Brazilian website it can be closed.

Ads websites and search engines as Google will be affected, Registro.BR will notify them too and they will need to remove the links to this "against the law" websites.

The internet providers sometimes will need to show a webpage saying that the website that you're trying to access is blocked because it is agains this law.

Analyzing one of the sites you can think it is a noble think, but as always, laws like this one open a space to "censorship" on the internet. And sometimes websites that provide legal and illegal content (the user put the content online so...) will have their access blocked! Tereby limiting the content on the web.

The internet born free and must be free. Is this the Brazilian SOPA?

Matheus

PS: I'm not a law expert so maybe I missunderstand the law. But I don´t think so.

Sources:
http://tecnoblog.net/93557/projeto-lei-sopa-brasil/
http://www.camara.gov.br/proposicoesWeb/fichadetramitacao?idProposicao=535988

Oct 13 2011

Remove or Disable Overlay Scrollbar – Ubuntu 11.10

Good Night,

Sadly (for me) the Scroll bar on Ubuntu 11.10 are still the same as Ubuntu 11.04. I particularly don't like it. So I tried the same method to disable the overlay scroll bar on Ubuntu 11.04, and it works! (I just tested the disable method.)

Use this:

# echo export LIBOVERLAY_SCROLLBAR=0 > /etc/X11/Xsession.d/80overlayscrollbars

If you try the other methods, please let us know if it works!

Remove or Disable Overlay Scrollbar – Ubuntu 11.10

Best Regards,,
Matheus

Oct 13 2011

Changing the menu buttons positions on Ubuntu 11.10

Hello

I'm still setting up my Ubuntu 11.10 (Oneiric Ocelot). Let's change the menu buttons (minimize, maximize, close) position to the right (again).

Open your Terminal

$ sudo apt-get install gconf-editor

Run it

$ gconf-editor

Go to "apps/metacity/general/"
Find "button_layout" and update the value to:

menu:minimize,maximize,close

Save, logout, login. Done!

Best Regards,
Matheus