Takis Blog

Μάνα θα πάω στα καράβια….

Αυτή η θάλασσα….

tbc

Another time it is justed proved that what you pay is what you get

It is proven below that for 33/month you can’t get “business class” internet service

iperf for 24 hours from 100Mbit Dedicated server in europe to my little Ubuntu server hooked on the Cyta adsl line:

You can clearly see that some times during the day the 24 promised Mbps is more or less divided by 100 times ending up to have something better that an ISDN line

Το τεσσαράγωνο της παρακατιανής τεντόστρας, πατσίζει με τη σούμα των τεσσαραγώνων των δυο παϊδιών που στέκονται σούζα.

Ή αλλιώς:

“Το τετράγωνο της υποτείνουσας ενός ορθογώνιου τριγώνου ισούται με το άθροισμα των τετραγώνων των δυο κάθετων πλευρών”

Έχετε δει ποτέ πρόσωπα να σχηματίζονται στα σύννεφα του ουρανού;

πρόσωπα στον Άρη σαν και αυτό;

Αυτόν που ανεβαίνει στο δένρο τον βλέπετε;;;

Νομίζετε οτι είναι τυχαίο;

οχι…

είναι όλα στο μυαλό μας…

Hello all,

Just wanted to share with the world some thoughts about the new project I’m into.

The basic idea is to construct a homebrew BCI using open source software and harware. Of course some people have already done that, like it always happens on cyberspace.

You can find more info here: http://openeeg.sourceforge.net
The basic idea is to plug one of these things:
on my skull, and monitor brain waves on my PC. Later on I can train myself and be able to control the PC. Then as technology advances I’ll be able to be 24/7 plugged, and transmit brainwave data via 3G, WiMAX, LTE or whatever, and make the DSP on the cloud. Realtime data will be logged, monitored, and be sent back for feedback and self-evaluation.
These are the first steps. Whatever the actual outcome of this, I will be trained one day earlier. Later when singularity happens and we’ll all be able to upload our brains there would be no need for BCI‘s.
I also hate it when they say something on BBT that I’ve already thought or read and then it becomes mainstream.

This is a small Howto if you want to run obdgpslogger on bifferboard that is shipped with Openwrt

Compile kernel module for PPP and FTDI (RS232 -> USB)
Follow these instructions to get openwrt build 22979 from svn.

mkdir bifferos
cd bifferos/
svn co -r 22979 svn://svn.openwrt.org/openwrt/trunk
cd trunk/
patch -p0 < ../bb-r22979.patch
make menuconfig

Now select PPP and FTDI to build as modules

Then hit:
make V=99
into trunk directory. This will make our kernel modules among other things

Now copy kmod-ppp_2.6.32.20-1_rdc.ipk and kmod-usb-serial-ftdi_2.6.32.20-1_rdc.ipk to bifferboard and run opkg --nodeps install

Now we have loaded our modules for ELM327 USB to ODBII interface and 3G modem, and have to compile obdgpslogger for bifferboard.
cross-compile obdgpslogger for openWRT:

Download latest version of obdgpslogger

Create a file that contains the following:
toolchain-rdc.cmake :
# this one is important
SET(CMAKE_SYSTEM_NAME Linux)
#this one not so much
SET(CMAKE_SYSTEM_VERSION 1)
# specify the cross compiler
SET(CMAKE_C_COMPILER /home/user/bifferos/trunk/staging_dir/toolchain-i386_gcc-4.1.2_uClibc-0.9.30.1/bin/i486-openwrt-linux-gcc)
SET(CMAKE_CXX_COMPILER /home/user/bifferos/trunk/staging_dir/toolchain-i386_gcc-4.1.2_uClibc-0.9.30.1/bin/i486-openwrt-linux-g++)
# where is the target environment
SET(CMAKE_FIND_ROOT_PATH /home/user/bifferos/trunk/obd /home/user/bifferos/obd-inst)
# search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)


Then do:

cd obdgpslogger-0.15
mkdir build
cd build
cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain-rdc.cmake ..
make


You may need to run "ccmake .." to configure some things

If you need GPS support, you have to download and cross compile gpsd too, in order to get the libraries.

To cross compile gpsd for our platform you need to do a couple of things.
Edit configure file, and enable cross compilation flag,
export CC="/home/user/bifferos/trunk/staging_dir/toolchain-i386_gcc-4.1.2_uClibc-0.9.30.1/bin/i486-openwrt-linux-gcc"
export CXX="/home/user/bifferos/trunk/staging_dir/toolchain-i386_gcc-4.1.2_uClibc-0.9.30.1/bin/i486-openwrt-linux-g++"

and then configure and make.

Be aware that gpsd files have to be in $HOME/gpsd, since this is statically defined in obdgpslogger source.

Now you have an odbgpslogger binary that runs on bifferboard.
You might also find useful this guide also that shows how to make Huawei 3G modem work on bifferboard. However you don't have to compile kernel again, you just make the modules.

GIA: A new term I introduced just now.
Examples of GIA’s: Facebook, wikipedia.

-Aggregated information is easier to be filtered
-Aggregated information is easier to be spied on
-Aggregated information can be streamlined
-Aggregated information can be divided into subjects

The information flow, the music, the people, the crowd, the lights, the color, the sound.

“Every two days now we create as much information as we did from the dawn of civilization up until 2003″, Schmidt says.

So user generated crappy content is taking up all free storage capacity at the world’s datacenters. All this information is stored for ever? How much information can there be stored?