Jeff, Steve and I were just considering using capacitors for powering things instead of button cell size batteries. We thought about moving the plates apart as the capacitor discharged so that the voltage increases. Then I thought why not use a squidgy dilectric so that the width between the plates increases as the charge decreases as a result of the force between the charges on the plates. Of course this all relies on finding some sort of suitable dilectric.
I’m writing it here so that Steve can’t patent it :-P
For my project viva I need to do a demo of the Gumsense. I’ve set it up to log readings at 1 second intervals from a potentiometer which I shall twiddle around. It sends them over wireless to my laptop, which sticks them in a mysql database using a php script. A mod_python script then uses matplotlib to plot them:
Horizontal axis is seconds. Vertical axis is reading – in ADC counts (out of 4096).
Hmmm. Two identical situations, and no idea about why one’s different to the other… I know, I’ll take a dump of SFRs in both and then diff the result…
How on earth does this RewriteRule:
RewriteRule ^tg_widgets/turbogears/js/(.*)$ js/$1 [L]
Cause a request to /tg_widgets/turbogears/js/MochiKit.js map to /beesjs!?:
File does not exist: /home/rob/public_html/beesjs
Update:It all makes sense now. There was another .htaccess file further up the tree…
-bash-3.00$ free -mm
total used free shared buffers cached
Mem: 2025 2009 15 0 1 46
-/+ buffers/cache: 1962 63
Swap: 1983 1983 0
#!/bin/env python
from Pymacs import lisp
def test():
start, end = lisp.point(), lisp.mark(lisp.t)
lisp.insert( "Pies" )
Closely followed by:
M-x pymacs-load RET test RET RET M-: (test-test) RET
A highly useful command.
Update: Added a “RET” to the end. It’s much better when that’s there.
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