[DC LoCo] hank crank recharger for new ubuntu tablet
pshapiro at his.com
Sun Sep 27 20:31:51 BST 2009
after sending info last week about that upcoming ubuntu tablet
that uses eight AA batteries i got to thinking about cool ways of
recharging those AA batteries. so on a whim i searched the web for
"hacking a hand crank flashlight" and came across this excellent video.
then i went looking for a vendor for a hand crank flashlight and found this
which looks a lot like the flashlight shown in the above video.
is anyone on this list good with a soldering iron? this might be
a fun project for the dc loco to take on and create a video about. the
big question is -- how many minutes of tablet usage do you get for
each minute cranking the crank? my prediction is that it might be in
the 10 to 15 minutes range of tablet usage for each minute of cranking
a bicycle battery recharger would harness human muscle power
better, but the hand charger is cheaper to build and more portable.
and if you have three hand crank chargers then you have more
recharging going on.
coincidentally, i know a nice woman in takoma park who is going
back to mali, africa, to build a second school in the village where
she grew up. this village does not have electricity. it would be ideal
for testing out a hand crank ubuntu tablet.
here is a web site i helped her set up that shows some photos
and videos from her village. http://tinyurl.com/ycmaxvk
Phil Shapiro pshapiro at his.com
"Wisdom begins with wonder." - Socrates
"Learning happens thru gentleness."
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