OLPC < Users/AndreaSterbini

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---++  One Laptop Per Child ... a beautiful project!

---+++ It's arrived!!!

Our OLPC laptop (where I am just typing these notes) has arrived some weeks ago, with the help of Peter Thoeny, a good friend of mine that has been my po-box in the States for the laptop I got through the <nop>G1G1 (Give one Get one) program.

The kids love it ... even if they play more with the home PC, that' a lot bigger.

It's a very nice machine, running a slightly hacked version of the Fedora 7 distribution.

It's a little slow {600 Mhz) but with a very nice screen.

---+++ Installing Cups

This is not so difficult:
   * install samba and samba-client ==yum install samba samba-client==
   * install cups ==yum install cups==
      * notice that the on-line documentation and icons are not installed by default. I have downloaded the rpm separately and manually unzipped the =/usr/share/doc/cups...= directory in its proper place. Probably an appropriate rpm/yum option could avoid this step.
   * add the cups service ==chkconfig cups on== and start it ==service cups start==
   * set a root password
      * ==su -==
      * ==passwd root== 
   * open the http://root:your_root_password@localhost:631/admin page and add a printer
   * install the [[%ATTACHURL%/Cups-1.xo]] activity (it's just a gmail activity with an icon stolen from an ubuntu package)
      * Notice that the activity does not handle properly the global locale setting. To get the Cups pages in your language you could add a ==DefaultLanguage== option to the =/etc/cups/cupsd.conf= file.

---+++ Playing with Lejos and Lego Mindstorms NXT

I have been able to install Lejos NXJ on the OLPCand load some programs on the brick with USB. 
(but I have not yet solved the bluetooth communication)

I jot down what I remember  ... I will clean-up these instructions later.

You need to install some prerequisites before compiling the lejos NXJ tools
   * install Java
   * ==yum install gcc==
   * ==yum install scons==
   * ==yum install libusb-devel==
   * ==yum install bluez-libs-devel==
   * ==yum install make==
   * download the lejos linux package from lejos.org
   * download the libnxt package from libnxt.sf.net

Then
   * Install Java and set-up the =JAVA_HOME= environment variable (e.g. in your =/etc/profile= )
   * unzip lejos and libnxt
   * copy the =libnxt-0.3/flash_write/flash.bin= file to =lejos_nxj/src/libnxt/flash_write= directory
   * enter the =lejos_nxj/src/libnxt= dir and call =scons=
   * enter the =lejos_nxj/src/jbluez= dir and call =make=

Notice: for some reasons the =jni.h= include file was not found.
I have added the option =-I/usr/java/jdk.../include -I/usr/java/jdk.../include/linux= to the scons config file

Notice: the makefile of jbluez did'nt work ... I had to do the two compile steps by hand