Monday, May 28, 2007


I compiled the OLSR (RFC 3626) routing daemon for the XO. Nothing hard, just nice to have. I can imagine that in cases when there is no school server one XO will be re-used for internet uplink (f.ex. via the USB ethernet adapter). In these cases OLSR can be helpful on the external interface.

pre-compiled binary: link and olsrd.conf.

Ah yes! it is tested of course :)

Tuesday, May 22, 2007


I had the honor of visiting the MIT campus. In one sentence: wonderful place! Smart people, nice atmosphere.

The One cambridge center - where the One Laptop Per Child offices are and where it is being designed and developed

OLPC is testing solar cell panels for the roofs of schools.

These panels are strong enough to power a gang charger which can charge the batteries for the laptops of one class. The gang charger can furthermore be connected to normal power sockets.

In case the solar cells are not available there will be another option: the spindle!

Everybody asks "what happened with the hand crank?" However the hand crank is a bit to fragile. Tests have shown that the force on the mainboard is to big. So... here comes the spindle. The current ratio is 1:10. One minue of spinning the spindle = 10 minutes laptop use.

mesh networks are being tested directly at the office . In the office spaces you can see XOs hanging from the ceiling, and in each corner. The natural tendency is to touch them and explore them, but a "DO NOT DISTURB" sticker reminds you that this is actually a mesh test cluster. As I discussed with Michail, having a moving mesh will actually be something else.
But this test setup can already give you a good impression of a school class.

Michail Bletsas holding a mesh repeater. This nice little device will be quite cheap and will run with solar power

These mesh repeaters will be connected to this solar panel.

The current design idea looks like this

Thursday, May 3, 2007


The little things arrived. Firmware upgrade, you are next.

Wednesday, May 2, 2007

100$ for a laptop? Can't be true!

Hehe, here is a nice one for lighting up your day.

The shipment was delayed. When I called at DHL they said that customs was still keeping the package since they don't believe the pro-forma invoice. 100$ for a laptop must be much to cheap in their opinion. So I had to send them a link to the page explaining what it is etc.

I wonder how the logistics for a complete country rollout will look then :)