Hardware
One Laptop Per Child believes that innovative design is capable of bringing robust computing to children in the developing world at low power and low cost. This began with the XO laptop, and continues with the second generation handbook and peripherals.
Unlike traditional computer manufacturers, the design goals of OLPC are (in order):
- Safe -- no children should be harmed
- Stylish and Usable -- something children want to own
- Lowest Power -- low power means longer run-time
- Lowest Cost -- a lower cost means more children can have one
- Robust and Maintainable -- children drop things
- Performance (speed)
XO Laptop
The XO Laptop is the most rugged low power, low cost laptop currently available.
- The Children's Laptop
- Why it is unique
- Keyboard
- Display
- Batteries (Battery Charging)
- Certifications (Safety and RF emissions)
- Environmental Impact (The Green Machine)
- Troubleshooting the laptop
- User modifications of the laptop
XO-1 Laptop
This was the original XO laptop, of which over a million were manufactured. Production of the XO-1 stopped in Spring 2010.
XO-1 Versions: Two models entered production: XO CL1A, CL1; CL1 pre-production models were: C1, B4, B3, B2, B1, A1
- Details of the XO-1 laptop hardware
- The definitive laptop specification (only available in PDF format).
While developing the XO, many ideas for hardware were contributed.
XO-1.5 Laptop
A refresh of the XO-1 laptop happened in 2009. In a continued effort to maintain a low price point, OLPC refreshed the laptop electronics to use the latest component technologies. This refresh (Gen 1.5) is separate from the Gen 2/3 projects, and continue to use the same industrial design and batteries as Gen 1. This provides an overall update of the system within the same ID and external appearance, giving school systems using the XO-1 with a cost effective replacement.
- Details of the XO-1.5 hardware
- Hardware brief (pdf)
- The definitive hardware specification (only available in PDF)
- Announcement, April 17, 2009
XO-1.5 Versions: Production: CL1B C5, CL1B C3, CL1B C2, ; CL1B pre-production models are: C1, B3, B2, B1, A2, A1
XO-1.75 Laptop
- Main page: XO-1.75
In 2010, OLPC started development of a laptop based around an ARM processor, in order to finally reach an operating power low enough to allow a full day of operation from a single battery charge, as well as better operation from solar and human energy sources. This refresh (Gen 1.75) continues to use the same industrial design, display, and batteries as Gen 1.
XO-1.75 Versions: Not in production; CL2 pre-production models are: C1, B1, A3, A2, A1
XO-2 Foldable Tablet
In May of 2008, plans for the next generation of OLPC laptops were publicly announced. Nicholas Negroponte challenged the design team to aim for those goals while also rethinking the notion of a laptop. The result doesn't fit neatly into the "laptop" category. The form factor is that of a book or folded (clam shell) tablet --- a handbook. At this time, development of this device has been halted in favor of a more conventional tablet, the XO-3.
r
Peripherals
In addition to the laptops and handbooks, there are some peripheral hardware components in whose design OLPC is involved.
Multichannel battery charger
Classroom situations, especially those without "grid" power, are challenging for powering laptops. One of the solutions is a multiple battery charger, which allows a number of laptop batteries to be charged in a small cabinet taking AC or 12VDC input.
OLPC has pursued the design of a Multi-Battery Charger for the XO Laptop, and has units entering safety testing in Jan. 2008.
Active Antenna
The Active Antenna is the same Marvell radio used in the XO-1 laptop, but on a 5m USB cable allowing their use either standalone (with a power supply) or with a School server. Unfortunately, Active Antenna production is awaiting the development of a better mesh implementation for dense mesh situations. We currently recommend the use of traditional 802.11b/g access points with the XO.