About this time yesterday morning -- actually an hour or so
earlier -- I found myself awake and went upstairs to look out
at the weather, and saw a curious smoke pattern in the distance.
I thought it looked like about a three block stretch of I-295
burning slowly, because it was smeared horizontally much more
than the wind would account for (I compared it to the plumes
from the recycling plant and another smokestack) but did not
go very high. I thought it rather odd, and figured there must
be some other explanation, perhaps an unusual concentration of
folks using their fireplaces, or some factory I'd previously
overlooked, or a rather funky fog bank, rather than a fire
that wide ... either that or I'd hear about it on
television news later.
I later found out that it was in fact a fire, but not three
blocks worth (perhaps it was a lot closer than I thought it
was, and thus not as wide as I'd thought (but I thought the
reporters said it was in Brooklyn? ... That's even farther
south than I'd thought it looked when I was staring at it --
heck, it's halfway to Glen Burnie from my house). A three
alarm fire consuming a bar, possibly arson (when I heard the
report they had no forensic evidence yet, but suspected arson
because someone had made threats), that started around 3:00.
So firefighters had been on the scene for a while when I
noticed it. Perhaps there was a lot of steam mixed with the
smoke, and steam disperses differently than smoke? If nothing
else, "burning slowly" -- relative to a normal building fire
-- makes sense if they'd already been working on it for an
hour.
So apart from the horizontal scale, I should have
trusted my instincts. After hearing the news report,
I started thinking about forest rangers in fire towers,
determining locations of smoke plumes they spot.
I was recently reminded of a wedding at which I was
officially there as the officiant, but then proceeded to
shoot the posed photos and the cake cutting, and finally
pulled out my guitar and entertained for the rest of the
reception. Admittedly this was a very small wedding,
but it does occur to me that in addition to simply
noticing the "now here's a story" moments in life and
having some idea how to tell them, sometimes things
happen in my life that are just plain unusual. (I would
be shocked to discover that experience was unique, rather
than merely unusual, but it strikes me as a funny enough
situation.)
I actually had a longer essay in the queue on the
topic of strange lives and unusual people, but I'm not
quite ready to distill my thoughts on that into something
focussed enough to be coherent. I'll get to it sooner or
later.
Perrine is asleep in my lap. Solidly asleep. I am
thirsty, but I think I can survive being thirsty a little
longer before I dump her off my lap so I can go to the
kitchen.
I need a 15VDC, 1.2A "wall wart" with a barrel
connector. I've got a handful of extras that I
wound up with somehow, but all I see in the box
are 6V, 9V, and 12V, I've got one of those "everything"
AC adaptors -- multiple voltages, switchable polarity,
several different connectors -- but it turns out to only
go up to 12V as well. Feh. Keeping my eyes open for
scrounge, but in the meantime feeling inadequate
because I've got this notion that I really ought to
be able to just solder one up from assorted spare
parts without fearing that I'll let the smoke out of
a voltage regulator[*] or feed the device on the other
end some nasty, spiky or wobbly power because I chose
the wrong filter caps or something. Why do I have
a EE inferiority complex when I've never been a EE
(or even a serious hardware-hobbyist) in the first
place? Why doesn't my sense of self-worth stay
rooted in the software side of things, where it's
safe?
Still, I wonder whether I have the right transformer
in a box in the basement. I know I've got enough
diodes for a full-wave bridge, and hey, they may
even be rated for that much power if I'm lucky ...
assorted resistors and capacitors (mostly ceramic,
a few electrolytics), a soldering iron ... but without
the right transformer and a voltage regulator, I think
it's a non-starter. Safer to keep my eyes open for
opportunities to scrounge a leftover wall-wart from
something being thrown away.
But every once in a while an idea from my
high school days makes another pass through my
brain: a house UPS that ducks the inefficiency
of the inverter by just feeding DC directly to
all devices that are just going to rectify the
AC anyhow. Instead of plugging a computer into
a 120VAC outlet on an UPS, why not just bypass
the computer's power supply and plug the computer
into +5VDC, -5VDC, +12VDC, and -12VDC connectors
on the UPS, since the battery in the UPS is
putting out DC and the guts of the computer
want DC? Sure, my wall outlets will look a
bit funny if I make it a really big UPS and
hide it in the basment, but wouldn't I get more
life out of smaller batteries by skipping the
invert-then-rectify stuff? Or is this just an
example of exactly why I shouldn't be doing my
own EE stuff?
I think I've got a copy of The Art
around here somewhere. I should make another
attempt at working through it eventually.
I made it through the cold snap. The
next couple of days should be more comfortable.
At 277K[**], I was seeing my breath everywhere
(except the kitchen after I'd been cooking),
and I retreated to bed fairly often to re-warm
my fingers and toes. Having a computer by
the bed is useful, though trying to type with
the keyboard under the bedcovers is a bit
awkward. Getting a wireless connection to a
PDA would be useful; that's an upcoming project.
(I've been given a wireless frob, but it goes
with the PDA that broke, not the one I'm using
now; I may be getting my hands on another of
that kind of PDA soon, I think -- in many ways
it's not as nice as the one I'm using, but I've
been curious about how one uses the wireless
hookup for a while, so I wanted to get my
hands on it to experiment a little at least,
even before the urge to hide under the covers
for warmth; I've got a hand-me-down wirelesss
router just waiting to fulfill its design
instead of pretending to be an ordinary
three-port (or is it four?) 10baseT router.)
Or maybe when I'm cold I should just take
a flashlight under the blanket and read a
low-tech book. I've got a couple of novels
waiting for me to feel like I can "goof off"
reading without feeing guilty or stressed.
A cold house might be a convenient excuse.
I was able to keep myself from feeling like
I was freezing, except for my fingers and toes
getting so cold so quickly. I did have an
offer of emergency warm lodging, but it never
got quite bad enough to warrant getting that
organized and wrestling Perrine into her
carrier.
Speaking of Perrine, she just woke up enough to
stretch, turn around, and lie down again. That's
just barely awake enough for me to go get something
to drink without feeling quite as apologetic
for disturbing her. Sheesh. Before Perrine I was so
good at saying "no" to cats, moving them out of my
way, etc.
[*] A couple of decades ago I did try to roll
my own power supply, using a cookbook schematic
from the packaging for the regulator chip. And
let all the smoke out of the regulator the moment
I connected my circuit to the mains. In general,
I try to keep friends around me who can do the
EE stuff I'm not good at.
[**] Okay, okay: 277K = 4C = 39F, and that
was the temperature I measured at my desk, which
is in neither the warmest nor the coldest room
in the house. There's allegedly money coming
my way that's predicted to be enough for a tank
of heating oil, but it seems to be perpetually
a month or two away, and I don't actually know
how much it is. I figure when it shows up it
shows up, and then I find out how much and what
it lets me do; in the meantime, I get by how
I can and act as though the hypothetical money
isn't a factor, because there are too many
unknowns.