3d to 2d

http://insideofasmallbox.blogspot.com/2010/12/encode-3-d-to-2-d-in-avidemux.html

SBC

Rock!

http://apc.io/specifications/

Prezi

The presenter:

http://prezi.com/

Vpython in Ubuntu 10.04

In some instalations of Ubuntu 10.04, with graphics card "Intel Corporation 4 Series Chipset Integrated Graphics Controller" there is the need to install libgtkglextmm-x11-1.2-dev to get the correct vpython funtionality.

If you get the problem like

(:8194): GdkGLExt-WARNING **

install this package and it will work.

Have a nice time while physics programing in Vpython

Cheap WhiteBoard with Nintendo Wiimote

Hi,

If you have a Wii console at home you may want to try this.

Install an application called gtkwhiteboard, it is written in python (there are numerous other programs written in java but they are mostly Windoze oriented and painfully to run in gnu/linux).

Connect the program to the Wiimote, create an inexpensive IR pen and you got yourself a Digital Whiteboard.

Mad Dog in Costa Rica

Aqui va una entrada para los ticos de parte de MadDog.

NTP Server in 20 seconds

Hi,

How are you today?

If you are going to install an NTP server I suggest that you use OpenBSD with OpenNTPD. That is the way to do it.

http://www.openbsd.org
http://www.openntpd.org/

In OpenBSD it is already install all you need is to activate it in rc.conf.local (NOT rc.conf)

ntpd_flags=""

Then in /etc/ntpd.conf add the line

listen on *

Leave the servers line as it is.

Modify /etc/pf.conf to allow udp in port 123.

pass in log on $ext_if proto udp from any to ($ext_if) port 123

where ext_if="YOUR INTERFACE"

You can always use GNU/Linux Debian, Fedora or Slackware (or Ubuntu Server if you are a beginer) to do it.

apt-get install openntpd

Then modify the /etc/openntpd/ntpd.conf

listen on *

Leave the servers line as it is.

Reboot if necesary and you have an NTP Server.

The client instalation is the same but the line listen on * must not be in the configuration file, and the server should be the one you want to use.