The New XO-1.5 HS: a blue, blue world

Part 2 of a review of the XO-1.5

Over 90,000 Uruguayan high school students will receive a new XO-1.5 HS (High School edition) laptop.  So how is it different from the XO-1 that their younger classmates have?

From the outside, the XO-1.5 HS has the same feel — it’s the same size, and the same antenna ears… though they feel different somehow in dark blue.  The color variation on the backplate is more limited — there may be just one set of colors to match the dark blue casing.

To make it easier to use for high school students, the keyboard features larger keys for larger fingers — and it’s now a standard responsive, ‘clicky’ keyboard rather than a waterresistant membrane. Its light/dark blue color scheme represents Uruguay’s national colors, more subtler than the bright green of the other XOs.

Since we redesigned the keyboard, we took the opportunity to make a few other handy changes. The new keyboard screws in and pops out without dismantling the bottom of the XO — taking 2 minutes rather than 15 to swap one out.

I tried it myself during my first XO teardown – the keyboard was probably the easiest thing for me to get out. We did a half tear down and photographed it, so we can also add guidelines for upgrading your disk on the 1.5’s motherboard. And now people seem to be making hybrids of XO-1.5s with the new keyboard (see our Flickr stream for more). I’ll post again when the new repair guide section is ready.

http://www.flickr.com/photos/olpc/sets/72157624651637076/

Papua New Guinea’s Jim Taylor Primary School

Earlier this month, Laura Hosman, an assistant professor following OLPC,  wrote an eloquent two-part series about her visit to the Jim Taylor Primary School in Kisap, Papua New Guinea, an hour’s drive from Mount Hagen.  This has the potential to be one of our most interesting rural deployments — and well run, as are all of the Oceania projects.  It is interesting to see how they are using their casually-scattered solar panel array.

XO power data: power draws for plugged-in laptops

Guest post by Richard Smith

We’ve finished testing power consumption while plugged into a 230V ac wall outlet for the XO-1 and the XO-1.5. The new machine performs well while suspended, and suspends very smoothly.   The 1.5 charges faster and using less power to charge the same battery.  It also draws slightly more power when in high use, thanks to its variable CPU.

See the chart below, which includes the power draw of the AC adapter.  Battery-only numbers will be significantly lower, in particular for idle and suspend, but are a bit harder to measure cleanly.  There is no comparison chart for that yet.

Power draw at the wall (XO + adapter + backlight)

Scenario XO-1 XO-1.5
Full charge 56 Wh 47 Wh
Idle 8.5W 7.2W
High 9.5W 9.7W
Suspend 5.2W 2.85W
  • Full Charge: The amount of energy it takes to completely charge a dead battery, using an adapter (power needed for bulk charging of batteries may differ).
  • Idle: Laptop sitting at the Sugar home screen, with power management disabled, backlight on full, charging.
  • High: Laptop running the Record activity’s “preview” mode.  Power management disabled, backlight on full, charging.
  • Suspend: Laptop with power management enabled, suspended, charging.

Calculating low-power options:

  • The backlight draws close to 1W – you can shave that off of the idle and high numbers turning it off.
  • Most of the power draw on suspend is to the adapter – you could view that as an upper bound on how much to factor out of the other numbers for battery-only power usage.

OLPC South Asia takes flight

A network of South Asian OLPC deployments (including India, Sri Lanka and Nepal) are working together to share knowledge and outreach. Support gang member Shirish Goyal has put together a gorgeous portal covering work in that part of the world, at olpcsouthasia.org

OLPC South Asia homepage

OLPC South Asia homepage

I felt a momentary pang of jealousy, looking at that design. But I satisfied myself with the knowledge that we will have a vibrant new look of our own soon, with the blog integrated into our main site. Here’s another sneak peek:

OLPC News

OLPC News

OLPC Arabic Forum!

As a way to learn from our recent deployments in the Middle East, a new Arabic forum is being launched to foster discussion and share experiences in the field with our many partners and supporters! Like our many resources in English, Spanish, and other languages, the forum hopes to link interested players with regards to XOs and childhood education in the Arab-speaking world. On the forum please find XO manuals and guides in Arabic, links to regional XO groups, and opportunities to post questions and comments, as well as a chat forum!

We hope to expand our forums to include Hebrew resources as our project in the region continues to grow.

We invite all interested members of the XO community to join and contribute!

Nepal estimates its overall OLPC costs

Rabi Karmacharya runs OLE Nepal, the local team in charge of implementing the current project in Nepal (with 2100 children and teachers at 26 schools).  Today he posted an estimate of the total cost of their XO project — $77 per child per year. This includes network connectivity, school infrastruture, teacher training, repair, content creation, and administrative overhead for the project.

Rabi notes that many of these (connectivity, training, overhead) are fixed costs that go down with scale, and content creation is largely a one-time cost that they benefits all schools.  And this project is still a pilot — less than 0.1% of the country’s primary school-age children.  Other interesting details: their annual repair cost for the first year was just 2.5% – children and families are extremely careful with their laptops; something we have also observed in other Asian countries.

It’s tremendously useful to see this level of detail in shared data and experiences; thanks to the team for publishing it!  They also publish an amazing country coverage map showing every school taking part in the project, with data about each one.

I hope to also see more of this school-level sharing of data and experiences, from environment and power considerations, to usage rates and general feedback, to published creative work of the students!