OLPCtalk

=One Laptop per Child= - my presentation, with Paul Schulz, to CEGSA (Computer Education Group of South Australia) - Thursday 19th July, 2007


 * Slides**: [[file:olpcSlides.odp]]

Introduction

 * How we obtained the laptops: '[| Linux.Conf.Au]' - Australia's Technical Linux Conference, run by 'Linux Australia', joel stanley http://blogs.ubuntu.org.au/shenki
 * Nicholas Negroponte (MIT Media Lab, professor, pic on right) [[image:negroponte_nicholas.jpg align="right"]]
 * created expressly for the world’s poorest children living in its most remote environments
 * a flexible, ultra low-cost, power-efficient, responsive, and durable machine with which nations of the emerging world can leapfrog decades of development

Core principles

 * 1) Child ownership, rights and responsibilities (protecting, caring, sharing)
 * 2) Low ages, 6-12, playing is the basis for learning
 * 3) Saturation, cf. vaccination, reach everyone
 * 4) Connection, mesh wireless, Sugar community UI
 * 5) Free and Open Source, provides capabilities for self development

Hardware features

 * Mesh wireless ([|link to video] demonstrating the mesh wireless)
 * Display - indoor and outdoor modes
 * Low power consumption
 * Power generation ... move away from crank to alternatives (ripcord yoyo)
 * Touch pad and stylus combination

Software
TamTam (music), Etoys (visual programming), Camera, others

Software Development
The software developed for the Laptop is being done with a world wide collaboration of programmers, using the free and open source software development model. This model has shown to be successful used with other projects like GNU/Linux, Wikipedia and Ubuntu, and matches the OLPC's core principles.

Development is coordinated via email, Internet Relay Chat (IRC), a wiki and distributed development software repositories.

User interface
Sugar UI - In Sugar the focus is on a community UI, rather than a desktop UI. This makes a lot of sense because the wirless mesh network is a central feature of the OLPC .......range clustered around activities ||
 * .................Home view.......................... || ......Groups view (friends, classmates)..... || ..Neighbourhood view, everyone in mesh..



Which countries?


Green //those countries we plan to pilot://[|Argentina], [|Brazil], [|Ethiopia], [|Libya], [|Nepal], [|Nigeria], [|Pakistan], [|Peru], [|Romania], [|Russia], [|Rwanda], [|Thailand], [|Uruguay] & [|USA]



[[image:Galadima00.jpg]][[image:olpc_02_550x413.jpg]][[image:olpc_07_550x413.jpg]]
Nigeria

Peru

Thailand

Brazil

Nepal

Uruguay

Reference
[|2B1: The Children's Machine] concise summary of OLPC features: overview, hardware, software, features, form factor, safety and reliability

[|Hardware specification] detailed hardware specs

[|OLPC_Human_Interface_Guidelines] in depth view of the various features of the Sugar UI

APPENDICES

TORTURE TESTS
 * OLPC News 2007-07-07**

code 4. XO testing: Quanta has put an enormous effort into testing the laptops in each of the five builds to date (A Test and B1–B4). The approximately 7000 prototypes have undergone temperature, electrical, mechanical, durability, and environmental testing:

Temperature: 55C/40% relative humidity (RH) operation test, 32C/50% RH operation test, 30C/85% RH operation test, –0C operation test, 85C storage test, –40C storage test, thermal shock and profile test (60C to –20C);

Electrical: AC power, BIOS flashing, Open Firmware, power management, USB 2.0, NAND flash, Wireless LAN, camera, memory, battery, LED indicator, stress test, ESD, battery discharge, LCD module verification, line-voltage and frequency test, power-on/off test, altitude test, wave-form measurement, frequency response, speaker performance, touch-pad performance, S0 state, S3 states, driver level, frequency accuracy, oscillation allowance, negative resistance, load capacitance, DDR1, critical trace, power-rail ramp, voltage level and noise, USB 1.1, Radiation of EN 55022, EN 61000-4-4, skin/case temperature, etc.;

Mechanical environmental test: operating and non-operating vibration test, operating and non-operating shock test, package drop test, package storage test, tilt drop test, free drop test, LCD stress test, base pressure test, LCD-pressure vibration test, switch-protection test, LCD-twist test, connector-tension test, adapter-cable bending test, spill test, water test;

Durability test: hinge 65K cycles, battery 10K cycles, buttons 1M cycles, power button 700K cycles, touch-pad buttons 3M cycles, USB ports 10K cycles, DC in 20K cycles, DC-in, line-out, and mic-in 10K cycles, wireless-antenna 5K cycles, SD card 16K cycles;

Special environmental test: sand and dust test, salt-fog test, solar- radiation test, rain test;

Abusive test: free-throw test, USB and SD card reverse test, tumbling test, water-sprinkle test, hinge max-angle test, tablet-mode max-angle test, antenna max-force test.

These are torture tests. Most of these tests are harder—by far—than that required for conventional laptops Currently, XO has passed the vast majority of tests. Provisions to pass the tough ESD, salt-fog, power-on/off test, and operating shock test are under way; as are even higher free-drop tests, more stringent hinge-torque tests; as well as stronger set of testing underway at UL as we enter C-Test phase in August. code