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Re: Wearable Construction

From: Brian Rankin <>
Date: Sun, 5 Dec 1999 18:19:48 -0800 (PST)

Everybody,

Thanks for your suggestions!  I am located in San Francisco, and would be
glad to volunteer as coordinator.  I hope to travel to Ghana in August
2000 to provide further mentoring for the computer lab, so anything built
I can take with me as personal checked luggage.  That way everything goes
with me thru the airport, and my host can help me deal with any baggage
issues. I don't believe that cameras/pictures are allowed in the Accra
airport, the military is very strict about enforcing Ghana's airport
security laws.

I can form a separate email list for this project, so that discussions
don't conflict too much with the wearables list. Or, we can keep 
communicating via this list.  Let me know what you think.

There are actually two issues which could be tackled:

a) small computers based on the embedded-computer/wearable technologies.
There are two advantages: 1) easy transportation to Ghana, and 2) low
power requirements.  Ghana constantly has brownouts and blackouts, with
massive power surges.  Every time the power goes out every device has to 
be unplugged, else it will burn when the power surges on.  I saw a power
regulator get fried black, as well as a television.  If these computers 
used low enough voltage, perhaps they could be supplied with solar
energy....maybe? Or a solar-charged car battery?  Also, power is often out
for 4-8 hours at a time; it really interrupts the flow of learning in the
lab.

b) A fat pipe to the Internet. The ISPs in Ghana are crap.  They way
oversell their service (and only the elite of Ghana can afford it), and
it is extremnely slow and unreliable.  The school is currently sharing its
one phone line with the modem on the Linux server, which means slow 'net
access for a couple of hours a day.  I'd really like to find a way of
bypassing the ISPs and the telcos.  DSL and cable is not an option in
Ghana.  DirecPc/Hughes do not cover central Africa.  Nevertheless, I
would think that there _must_ be an alternative to land lines.  

Maybe we could begin by working on the specs for the computers to be
built. I saw an earlier post indicating that using a Linux interface might
be an alternative to Win95.  I think that Linux would be fine, as long as
we can make it easy for the children to use (Staroffice instead of MS
Office, computer games, etc).  

Lastly, whatever we build/supply has to be sustainable by the folks in
Ghana. In the past, several well-meaning people have made fine
contributions to schools in Ghana, but neglected to ensure that the
Ghanans had the training/equipment to deal with problems, so the
contributions weren't of lasting value.

Please let me know how you want to proceed.  Again, many thanks!

Sincerely,

Brian Rankin

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