Lighting rants, car rants, teardowns, lessons-learned, info, etc.
A chronicle of my own learning experiences delving into the fields of
lighting and theatre production tech, hybrid and conventional cars,
energy efficiency, and miscellaneous other topics.
Plenty of useful tech reference stuff and geeky info-dumps.
And like any self-respecting Hobbit, I don't wear shoes.
hobbit . at . techno-fandom . dot . org
Lighting rants
lighting/lighting-linkfarm.html
-- Many lighting-related meta-pointers, originally to support a couple of
specific projects and seminars as well as being a rathole-farm.
Somewhat out of date by now; various external links may be dead
lighting/dimmer.html --
linearizing cheapo Torchiere dimmers
lighting/arisia02.txt --
review of early experience as LD at a local con
lighting/saas02.txt --
South Asian culture show, largish lighting gig at MIT, spring 2002
lighting/isr02.txt --
a song of sprinklers: failed, then rescheduled, Israeli dance gig
lighting/balty02.txt --
review of lessons learned LDing *another* con
lighting/h2k2.txt --
hogging the WholeHog at H2K2, aka the HoPE 2002 hacker con
lighting/neutrik.txt --
a small rant about Neutrik's solderless connector fiasco
lighting/side-cyc.txt --
more in the "lessons learned" department: description/analysis of
lighting a large backdrop from the side, MIT, spring 2003
lighting/as-workshop.txt --
review of the Actorsingers' lighting & sound weekend workshop,
early Aug 2003
a04redux.txt --
tech debrief notes for Arisia 04, reflecting two more years on with
getting more comfortable LDing at conventions, along with design documents
from
Arisia 06, -- all chronicling
some of our real glory days at the Park Plaza
[
... a little time passes in between without specific reporting on Arisia,
but with a camera ready at hand starting in about 2008 the "debriefs"
became more serious and in-depth.
For the entire line of pictorial Arisia reports, see these
per-year links:
2008,
2009,
2010,
2011,
2012,
2013,
2014,
2015,
2016,
2017,
2018,
2019
(year of the Dumpster Fire, the great Elevator Conspiracy,
and a new home),
2020,
... ]
lighting/splash05.txt --
summary of helping teach and implement a very short-timeframe show
at Splash 2005, a weekend program run by MIT's ESP organization
lighting/ab06.html --
lighting the dances at Anime Boston 2006, and general observations
lighting/static-zing.txt --
showstopping lighting-desk problems stemming from one of those
newfangled plastic-top folding tables ... important lesson here!
lighting/bigsrch.html --
a search form to do unlimited message searches on the LightNetwork
forum [and others] hosted at Delphi/Prospero. Uses cookies, grrrr
*Note: Light Network moved off Prospero and is now at
http://www.lightnetwork.com/
lighting/yelloband.gif --
Fun with color, aka a little roadie humor
lighting/masq-fx.txt --
Lighting effect "art-fag" descriptions aimed toward costumers participating
in SF/fantasy convention masquerades, or possibly any other sort of
similarly theatrical production
lighting/redneck/ --
Some quick-n-dirty event lighting solutions thrown together with
various types of compact-fluorescent bulbs and cheezy fixtures. With a
little more work, may have some interesting implications for the stage
lighting/arisia11/pony/ --
An example of hand-cutting a gobo out of aluminum pie-plate, showing that
curves and fairly complex details can be done with an ordinary x-acto
knife and come out looking quite good
lighting/dj-dimmer/ --
Discussion of issues and design deficiencies found in small "DJ grade"
dimmer packs, particularly those of offshore origin
lighting/tldeglaze.jpg --
Picture showing results of "de-glazing" the coated type of theatrical
black cotton tie-line: simply soak/swish in warm water, dry, and optionally
"distress" slightly over a table edge or something to knock the rest out.
The glazing stuff is similar to shirt sizing
lighting/s4-lens.jpg --
Source 4 lens tube configurations, from various revisions of ETC's S4
user manual. These are often reassembled wrong by well-meaning people
who go to clean the dust out of them
lighting/s4-refl.jpg --
Bad shot of the difference between old and new Source 4 lamphousing
reflectors; old one on the left is cloudy and loses a lot of light
lighting/s4-evol.txt --
Mailing-list thread about how the Source Four design has evolved over
time, paint and reflector coating qualities, and why the 36-degree lens
tube is often optically crap in practical use
lighting/tiltspall.jpg --
Close shot of the brass-to-steel spalling that happens to ETC tilt-brake
screws, when they start making those horrible skwee-gee-gee-gee-geek
noises when the handle is turned. Eventually they jam up hard enough
to be unusable, but a whisper of anti-seize applied well before they get
to that point will permanently fix the problem. We can't imagine why ETC
never chose more appropriate materials for these fittings and/or applied
lube at the factory even though it's been a common problem for years
lighting/lsc3/ --
Lighting design diagrams for Lonestarcon 3, San Antonio TX, summer 2013
lighting/dmx918/ --
Short pictorial on flipping the DMX receiver polarity on the Martin
918 scanner, which is internally set by jumpers instead of auto-sensing
like more modern units can
lighting/laserspray/ --
Fixing various mechanical problems in cheap laser-projector heads
lighting/rokbox/ --
Teardown/analysis/review of the Blizzard Rokbox 5 RGBAW LED wash unit
Venue info
[Much of which is likely out of date by now, but still here
as perspective on how we sometimes think about spaces we work in]
lighting/kresge-ckt.txt --
Kresge auditorium [MIT] hardwired-dimmers circuit map
lighting/pph-ball.txt --
The horrendous state of the Crestron house-lighting controller at the
Boston Park Plaza hotel, as of '08 or so. It desperately needs to be
reconfigured
lighting/ccc-gym.png --
Rear gym at Cambridge Community Center, off Howard St in Cambridgeport
lighting/afd_02e.xcf --
Multi-layer GIMP file showing the Arlington Friends of the Drama space,
from "Unnecessary Farce" in early 2018, but quite usable as a design
aid for future shows
Useful lighting control stuff
lighting/m518.lib.txt --
Corrected Martin robo 518 fixture profiles for inclusion in Hog _lib.lib.
Flying Pig got some of the values and modes wrong, and left out "lampoff".
Includes comments on the "real life" values that the fixture understands,
although comments do *vanish* once you load it and re-save your show
lighting/sliders.lib.txt --
Hog fixture profile to produce 27 raw DMX-valued output channels
lighting/extract.lib.txt --
Procedure to extract text-format fixture profiles from HogII _LIB.ROM
lighting/m918.lib.txt --
Improved Martin robo 918 fixture profile, providing somewhat better
indication of "real life" fixture behavior
lighting/PLL2.txt --
Phase-lock macro to fake "tap sync" functionality for Hog desks
lighting/dmxval.sh --
Stupid little shell script to translate between channel % and DMX value[s]
lighting/dmx-signals.txt --
!Updated!
a brief study of RS485 signal degradation when launched from various
sources into different types of cable, and some other observations
[including some advice straight from Doug Fleenor himself!]. For
a more visual follow-on, see ...
lighting/dmxwave/ --
Related page with more DMX signal exploration, with many 'scope shots
showing waveforms seen under assorted network problem scenarios.
Clearly illustrates what "slew rate limiting" means
lighting/LP15xxfix/ --
Upgrading a Leprecon 1500-series board to a GROUNDED power supply, making
it significantly more stable and interference-resistant
lighting/etc-rfu/ --
A quick look inside the typical RFU for ETC Express/Expression boards, and
diagnosis of a rather common cabling problem that plagues these units
lighting/etc-ion.html --
Observations from first personal contact with ETC's new line of Eos / Ion
control consoles. There are also some follow-on documents and/or
sections of convention writeups, from
2018 and
2019, and it all could use
to be better organized.
There was also some fun
LED effects play
at Costume Con 37, where what the board was doing was more interesting
than what the lights were doing
lighting/smartfade.txt --
Experiences planning for and using an ETC Smartfade console on a
typical [?] convention show
lighting/sd50/ --
Review of the Chauvet Stage Designer 50, a small 48-channel conventional
controller, with a helpful supplement to its operation manual
Other theatre tech
sound/clearcom.txt --
a rundown on Clearcom and similar type intercom electrical characteristics,
with pointers to other related resources [was lighting/clearcom.txt]
sound/ics/ --
simple intercom-line splitter that creates a new audio channel on
one output, using a common power supply for both channels
sound/btr200/ --
Fixing various problems on Telex BTR-200 wireless intercom gear, notably
a non-reception problem fixed by a little creative metal bending
flipcoil/howto.html --
description of how to roll cables with no twist, using the flip-coil /
over-under / roadie-wrap / fake-it / zero-wrap method [it has many names]
sound/badcable/ --
diagnostic on-the-ground proof of WHY we always want to coil
our cables correctly and take good care of them
sound/ranefix/ --
fixing one dead channel on a six-channel Rane audio amplifier, on which
the final transistors had shorted to ground through the heatsink pads
sound/srm450open.jpg --
Inside the main enclosure of a version-1 Mackie SRM450, with the loooooong
screwdriver required to get down the very deep wells in the plastic housing
to the fasteners. This one had a cracked woofer magnet
sound/test-wavs.tgz --
Downloadable collection of 1-minute test tones in uncompressed .WAV
format: 25hz, 440hz, 1khz, 10khz, whitenoise stereo/mono. Copy to your
every-day-carry device for a quick-n-dirty audio generator, without
having to install any sketchy apps! 15.6 Mb, expands to about 35 Mb
sound/commfix --
Extensive refurb of an entire Clear-Com style intercom kit, including
new cables and a brief exploration of XLR connector quality
sound/rc300i/ --
Examination of another wireless intercom system, with a hacky add-on for
"wireless talk-around" functionality
National Electrical Code
[NFPA 70] 2001 ROP draft available in PDF format under NFPA70/, u-find-it
power/NEMA_Simplified.png --
A simplified one-page diagram of the most common electrical outlets
used in the US, adapted from Wikipedia "NEMA_connector"
Going virtual
With many events forced to go purely online during the 2020 pandemic,
I eventually got pulled into the "new normal" of people gathering via
videoconferencing from their homes.
I'm still relatively new at this, but the technology is settling into
sort of its own groove and I help out where I can.
virtual/nasfic20.html --
A shortish report on the NASFiC that would have been held in Columbus OH,
but had to move purely online via Zoom, Discord, and video streaming
random/gdrive-org.html --
Thoughts on how conventions and other events can better organize their
shared Google Drive storage, after wading through my own years-long
accumulated hodgepodge of links and files from long-done cons
virtual/capclave-misc.html --
Another short set of observations from helping run a small literary online
con originally based in the DC area, with bits of perspective on simplified
setups for future events
virtual/november.html --
Thoughts and comparisons from working virtual Philcon and Chessiecon
on back-to-back weekends, with some Discord reference materials
virtual/ben.html --
Deguspice's various attendee-viewpoint virtual con reviews over 2020
Barefooting
I'm one of those people who uses footwear as little as possible in
all aspects of my life.
I don't need it, don't want it.
As a result, there isn't a thing wrong with my feet or legs, and my
soles are well-conditioned to handle harsh environments.
This extends to technical production, a field whose typical workers
remain shod against routinely overwrought fear of foot injury.
In real-life practice it's far less a concern, and shoes often detract
from one's competency -- certainly from my own.
Tech production is specifically mentioned because it's a big part of
what the techno-fandom collective is about.
As recorded in many of the pages indexed here, I'll totally bust my nuts
on any worthwhile gig where crews do not harbor misguided sixties-era
baggage against working barefoot, and thus refrain from giving me any
crap about it.
Instead, they can observe and learn the benefits.
It
is a safety issue, but not in the way one would traditionally
think -- I am far more confident and situationally aware when
not
subjected to the clumsy constraints of footwear, especially at height or
climbing, using all four of my hands to be maximally agile and productive
on the job.
There's a personal advocacy page
where I keep a running chronicle -- sort of a continuing who's-who
of establishment foot-friendliness, along with some fun stories -- in part,
about trying to bring executive leadership at various organizations into
more awareness and acceptance of the barefoot lifestyle if it hasn't been
achieved there already.
There's a minimal "sister site" at
outbarefoot.org
where more general info and a short "best-of" link-farm is maintained
to the most comprehensive sources around the net on this topic.
[It's also an excuse to play around with Amazon's
"S3-as-a-website" facility, which how it's hosted.]
I also help co-manage our local
barefoot hiking group,
and try to pound out some miles in the woods fairly regularly.
Yep, even in winter.
Here are some other hike stories not linked under the bf/ page.
Monadnock,
Freedom Trail
'16 /
'17 /
'18,
Monadnock again and
again and even
in stranger times,
Greylock.
In 2019 I also started bagging various 4K peaks in the White Mountains,
beginning with
Moosilauke,
Osceola, and
the
Franconia loop,
but am probably not going to obsess about trying to knock off
all 48.
Car stuff -- hacks/mods, rants, pix, stories, etc ...
Two electric motors and a gasoline engine, forever enmeshed in
a whirling struggle for power, each seeking to gain the most while
using the fewest precious resources -- their delicate dance
constantly choreographed by a consortium of cold, calculating
computers -- which in turn are mere slaves to a stream of arbitrary,
capricious, and often downright stupid instructions from the loose
nut behind the wheel.
... That's a Prius.
cars/prius-linkfarm.html --
Pointers to many resources about the Prius and other hybrids, many
of them pointer-nests themselves. A thousand fascinating ratholes,
but be warned that quite a bit of it is out of date at this point
cars/prius-flyer.gif --
A one-page flyer that simply points to here, for randomly handing out
to people who seem interested
cars/prius-mods.txt --
Full list of modifications to this particular car, many of which are
described in the pages below
cars/sweet/ --
Discourse on observing a "sweet spot" engine efficiency range, yielding
improved MPG at mid and higher speed ranges with proper application.
Take note of the
5-year update
while reading, as it contains updated information
cars/HSI/ --
Toyota's implementation of the "sweet spot" display, along with several
other important parameters, explained for best driving efficiency in
the third-generation [2010 +] Prius. Somewhat theoretical so far, but
will be refined as the community gains more experience with the car
cars/b-mode.html --
Lengthy explanation of what the "B" shift-select position is for, and
some related quirks of the Prius hybrid system
cars/warpstealth.html --
Description of a subtle but zero-consumption high-speed "glide" mode that
allows longer and more efficient coasting at speeds above 41 mph
cars/boost-hack/ --
Test-bench illustration of why regenerative braking can work at low
motor RPM and still charge a high-voltage battery
cars/worktruck --
Small pictorial essay on handling large and/or heavy loads in a Prius,
with particular attention to protecting the battery
cars/gps/ --
Making a relatively permanent mount for a GPS power cradle, using an
easily-removable vent panel as the base
cars/nest/ --
Constructing a cozy sleeper-berth in the Prius, including a hack to run
the ventilation system on very low power
cars/pwe/ --
An amusing hack to enable the power windows in a Prius without turning
on the rest of the car. Also shows some details on safely removing the
dashboard panels
cars/tpms/ --
A strange but functional tire-pressure warning system based on wheel speeds
cars/ect/ --
A circuit to read the raw output voltage from the engine coolant
temperature thermistor, and convert it through a "linearizer" to a
reasonably close mapping from degrees C to volts
cars/tachack/ --
How to install an aftermarket tachometer into a Prius, including notes
on how tachometers work, how to test and calibrate them, and how to
match the input circuitry to the car's signal levels if needed
cars/vvt/ --
Investigation of where variable valve timing comes into play in the Prius
at highway speeds, including refutation of an earlier theory
cars/warmair/ --
Quick-n-dirty hack to redirect engine air intake from a warm air source
rather than a cold one, with the intent of increased winter economy.
Some test results posted within
cars/heatgames/ --
Second revision of the above warm-air intake, plus a detailed account
of removing the cowl above the engine and installing a block-heater
cars/maint50k/ --
Changing the Prius HSD transaxle fluid, using the seekrit undocumented
top fill plug accessed by shifting the inverter without having to drain,
refill, and air-bleed its coolant. Other minor but useful preventive
maintenance items discussed as well
cars/maint100k/ --
Prius maintenance checks and changes at 100,000 miles, including the
inverter pump, coolants, tranny-fluid again, and a lot of testing and
discussion on the remarkable longevity of modern parts and fluids
pix/prius-ferrups.jpg --
One method of tying in a UPS to the Prius 12V system. The 450VA Best
Ferrups has 66 Ah at 12V inside, way more than the Prius battery itself.
The right answer, however, is to stop messing around with this feeble,
inefficient 12V nonsense and build a 10kW or more inverter that feeds
directly off the HV battery. See also
www.priups.com
cars/plugout/ --
A better solution for my own needs: a 3 KVA "plug-out" system, higher
capacity 240/120 split-phase which needed several mods before being
truly suitable
cars/naked/ --
The "Naked Prius" tech exhibit takes top honors at AltWheels 2005
cars/starthole/ --
How to fix a factory-assembly problem that can cause damage to the motor
control harness, due to a starter blockoff-plate fitted backwards
cars/bp/ --
Friction-brake pressure monitor for the Prius, to show when fluid is
sent to the wheel cylinders and causes kinetic energy to burn away
as useless heat. Pix, circuit, discussion, etc.
In contrast to the never-past-vaporware Coastal product to display
brake pressure, this is real and functional NOW
cars/prius-log/intro.html --
An attempted Prius diary / blog, which at this point will probably never
be finished as such but serves to describe the runup to purchase and how
the mods/hacking process began. See all the *other* Prius pages for
what happened afterward...
cars/prius-rally-hints.txt --
A guide to high-mileage Prius driving technique, specifically aimed
at participants in fuel-efficiency competitions
cars/mpg1105/ --
One way to document a rally course, geared toward MPG competitions. This
one was actually held in May 2011, with
Kimball Farm as
the start and return point. This is oriented toward very clear direction
so that drivers can concentrate on driving, as opposed to the occasional
deliberate obscurity of traditional time/speed/distance rallies
cars/training/ --
Online Prius/hybrid technical training course material, including details
on operation, safety, diagnosis, routine maintenance/repair, and a special
section on 3-phase motor basics. Slides-format so far. An ongoing project
pix/quad-rings.jpg --
Some silly photochopped ideas for painting the plastic Prius trim-rings
cars/prius-curves.gif and
cars/SAE-bsfc.gif --
A collection of power/efficiency curves. Kilowatt output can be mapped
very nicely to RPM, so achieving high efficiency is as easy as watching
a tachometer [which, unfortunately, you have to install yourself] and
trying to stay at full torque output whenever the engine is running
pix/holyshit.jpg --
An early result from having better instrumentation in the Prius, and paying
attention to state transitions, energy demands, efficiency curves, etc.
With good weather and summer gas, I can reliably reproduce 70+ mpg on
back roads -- not quite up to the level of the Pittsburgh paragons who
achieved 110 mpg, but still well ABOVE the EPA numbers for this car
cars/storm.html --
Technical "voice of reason" piece on Toyota's recall woes around late
2009 / early 2010 concerning Prius brakes, unintended acceleration in
some other cars, and a few additional overhyped issues
cars/brakerust.jpg --
Visual answer to the common "brakes grabbing" Prius complaint. The fix?
Throw it in neutral to disable regen during a couple of stops; you'll
clean 'em right off
cars/squirt/ --
A prototype injector monitor hacked together for the Prius, to
see exactly WHEN we're consuming that precious fossil fuel
cars/nosquirt/ --
The opposite of "squirt": a simple mod to kill the fuel pump and let the
engine conk out, which has certain beneficial uses and research implications
cars/imeter/ --
Installation of a prototype battery-current meter for the Prius, w/
pix, driver circuit, and discussion
cars/toyota-tis-sucks.txt --
A rant engendered by a rather horrendous "web experience" at Toyota's
service-manuals subscription site
cars/ev.html --
Version 0.1 of the Prius EV-mode switch, hastily crocked in prior to its
first real road trip [warning: largish pictures, very early webpage effort]
cars/Nomograph-plus-PSD.gif --
Rework of Graham Davies' original nomograph, showing the speed/torque
relationships in the Prius planetary driveline and a simple schematic
view of the system's construction
cars/meta1/ --
Thumbnails of my collected Prius/hybrid "slide show" as of 080418
[512 images in 8 meta-blocks, about 2.6Mb total]
cars/logos/ --
Exploring how to remove the Toyota logos from the front and rear of the
Prius, and making the affected areas look halfway decent again. A brief
adventure in automotive paint work
cars/dcty/bbt/ --
Follow-on to enhanced "safety bling" to gain greater day and night time
conspicuity, as well as a certain "industrial hazard" aesthetic
cars/tires/ --
Having four new Michelin Green-X tires installed on the Prius, using a set
of metal clamp-in valve stems for better robustness and reliability
cars/brk200/ --
Finally replacing the Prius factory-original front brake pads after
close to 200,000 miles: clear benefits of regenerative energy recovery
Prius teardowns
cars/ginv/ --
In-depth mechanical and electrical analysis of the Prius inverter.
Still in progress
cars/brkjob/ --
Discussion/pictorial of brake cleaning and service, with particular
attention to the front caliper slide pins, and a section on how the
rear drum self-adjusters work
cars/bodyecu/ --
Details on removing and disassembling the Prius "body ECU" and main
connector/relay block from under the drivers-side dash
pix/prius-rheo.jpg --
Detail pic of the dash-lights "rheostat" in the Prius. It's actually
a low-side PWM unit with a couple of other control leads
cars/prius-12V/ --
Details on the Prius 12 volt battery -- dimensions, type, the mounting
area, voltage regulation, and quiescent drain
cars/dcty/ --
Simple removal of the "courtesy light" bulbs to avert 12V battery
discharge from leaving a door ajar, with enhanced safety hints
cars/tb --
Pictorial rundown on the Prius electrically-actuated throttle body ...
cars/tb/service/ --
and how to perform simple routine maintenance on it
cars/prilock --
Cleaning and maintenance of the Prius physical driver's door lock,
to make it work better by removing the factory grease
cars/nest/ --
[Already listed above, but contains details on blower-fan controller]
cars/ipump --
Analysis of the Prius electric inverter-coolant pump, including why it
tends to fail and need replacement around 100K-ish miles
pix/aw07/ --
Our Altwheels 2007 booth included a nice "exploded" layout of major
Prius components and how they talk to each other. Includes the full
text of functionality descriptions
cars/mfd/ --
Diagnosis of a subtle but common fault in certain Prius display screen
units, detailing a fairly easy repair that can save $thousands$ for
out-of-warranty '04 and some '05 owners
cars/coastEV.jpg --
What's inside the Coastal Electronics cruise-control based EV-mode widget
cars/batbox/ --
Examinations of a Prius battery at six and then twelve years old, to detect
and head off any pending problem situations, and dance with its voltage.
The battery cooling fan is also investigated, as is the backup brake power
supply. A minor cleanup and refurb happens at the
12-year mark
cars/wbear/ --
Story and autopsy of a failed front wheel bearing. It gave another
thousand miles *after* becoming noisy and probably could have gone
considerably farther before being replaced
Other car stuff
cars/ev/ --
Electric vehicle exploration, an entirely separate section on its own,
primarily about the Hyundai Kona EV
cars/mpghints.html --
Well-known but seldom followed guidelines for obtaining much higher
fuel economy from most vehicles -- no gimmicks, just technique
cars/freefuel.gif and
cars/freefuel.txt --
A dumbed-down version of the above covering just the very basics. Used
as a handout at Altwheels 2006 and beyond, to encourage smarter driving
cars/tgguide.html --
Visual guide to quantifying tailgating distances/times on the roads and
evaluating the degree of hazard
cars/aaaf_trend.html --
An open letter to the AAA Foundation for Traffic Safety, taking it
to task for failing to discern the ever-increasing self-righteous
entitled attitude of American drivers everywhere. Despite its
chosen DC beltway location, the Foundation remains rather ineffectual
on the political and legislative fronts where clear thought and
action are desperately needed
cars/noid/ --
Simple automotive testing widget to beep and light an LED when given power,
and optionally load down the circuit at the same time. Like a noid light,
but more versatile
cars/can-split.html --
Using a primitive network-splitter to isolate pieces of a CANbus and help
reverse-engineer a little scantool data protocol, using a Scangauge as a
half-ass packet sniffer
cars/valvestem/ --
Article on defective tire valve stems, that began cracking away near
the base after only a year in service. Entirely due to outsourced
crap materials
cars/sotu.html --
Hack-job proposed State of the Union Address segment, endorsing
uniform enforcement of a three-seconds-minimum following distance
to help save lives and sharply reduce automotive property damage
cars/muscle.html --
Vrooom! Random thoughts on the "sexiness" and animal appeal of
traditional muscle-cars versus electric vehicles
cars/yb/ --
The "Yuppie Button": safety-enhanced rear lighting modifications to
aid driver alertness, maintain proper vehicle spacing, and prevent
collisions. Stand up to bullying!
cars/tundtran/ --
Solenoid control wiring problem on a Tundra pickup: quick diagnosis,
gnarly repair
cars/hwiper/ --
Insides of a Honda rear-window wiper motor, and discussion
pix/mp/T_texting.jpg --
What can happen when you text on the move, or *anything* else that distracts
attention away from the essential task at hand. PUT THAT DOWN AND DRIVE
cars/wshf --
Quick fix for a windshield crack caused by a flying rock, using one of
the kits with a vacuum/pressure syringe and sealant glue. Must be done
promptly to avoid further crack expansion
cars/subie.html --
SOLD! 2000 Subaru Legacy L wagon, 58K miles.
Reference remains for historic value and mildly amusing pictures
cars/carhacks-TR-beta.txt --
Preliminary version of a "car hacking" article that Michelle Delio was
working on for the MIT Technology Review, forwarded for editing/approval
cars/carhacks-TR-final.txt --
Final release version of MIT Technology Review "car hacking" article,
which despite what was thought to be a final editing pass came out
rather mangled away from the supposed original. Compare and contrast!
[All the articles by Delio have since been pulled over the HP / Carly
Fiorina imbroglio, and a stupid, busy-work "investigation" was launched]
cars/sub-hack-1.txt --
Design and motivation of a "throttle position sensor bias" control
to smooth out off-the-peg engine response
cars/sub-leak-2.txt --
Sad-but-funny saga of getting the runaround at a local dealer over a
simple radiator leak
cars/pooper-give.txt --
Plea to the local net/social community to let the Pooper enjoy
a dignified retirement [which eventually did happen, yay]
Miscellany
subnets.txt --
One-page quickie chart of subnet bit boundaries and allocation strategy
that allows sensible room for expansion, based on RFC1219
random/nc110.tgz --
Original "netcat" source distribution tarball from 1996, aka really
old laurels and embedded mini-rants about the Berkeley sockets API
pix/charlie/ --
A close physical look inside the MBTA's Charlie Card
pix/whr/ --
Installation of a Rheem "Marathon" water heater, with supporting details
on tank construction, minor plumbing triumphs and letdowns, and ways to
take the pressure off
random/4d.html --
A classic mistake: trying to go production using immature beta products
just because they're "new and cool", and landing in a support nightmare
random/nuvi.html --
A review of the Garmin "Nuvi" GPS family compared to older types, and why
Garmin has fallen OFF my list of competent product builders
pix/nwp09/ --
Photo collections from inside some of the "Gilded Age" Victorian-era
mansions in Newport RI
pix/mbfix/ --
Quick fix for the bad sharp-edged ergonomics of a unibody Macbook
power/dumbups/ --
Diagnosis and [redneck] repair of an APC SmartUPS, with thoughts on how
the problem cause may have been a long-standing design fault -- which
later turned out to be
completely correct!
random/taho1.html --
Early-ownership review of a new mobile phone, slightly less dumb than what
it replaces but not anywhere near the level of modern "smart" devices
hse/5686.html --
Gateway file to an extensive writeup on my house renovation that turned
into a deep energy retrofit, with detailed pictures and text on
construction, building science, HVAC, air-sealing, and some funny
contractor moments. A book-length treatise in 27 parts --
days of reading.
Requires minor human intervention to find the actual pages themselves,
or just web-search for "energy retrofit" and "hobbit"
power/badgfi/ --
Partial teardown of a Leviton GFCI outlet that went bad one night
pix/deadg9/ --
Autopsy of a Canon Powershot G9 that bricked itself, due to a known
problem where two screws come loose and rattle around inside and
eventually short out the main power supply
pix/mp/watermain/ --
Pictures and story of local water main work, adding a tee connection for
a line into a new subdivision
pix/mp/roadwork/ --
Upgrade of a local street from dirt/gravel to paved, including massive
new drainage infrastructure installed underneath. In six parts
pix/ice15/ --
Ice dams and related thermal fun from 2015's "wikkid cold" winter in
New England with lots of snow, one stormy smackeroo after another
pix/glospin/ --
Adapting glowing LED poi balls to a flow-arts staff, for spinning with
enhanced persistence-of-vision play, and taking it all up another
technical level in
Chapter 3
of the story
random/mybank-js.txt --
Detailed description of exactly how Fiserv screwed over various online
bill-pay service subscribers when they cut over to a redesigned website.
Stupid javascript coding errors on their part
random/cyber_wall.txt --
Thoughts on how stringent limitation of cross-border internet connectivity
could help provide significant mitigation of today's most common "cyber"
problems
video/sneetches.mp4 --
Possibly the most heartbreaking commentary applicable to the political
environment of 2016 [aka the rise of Lord Voldemort]
pix/misc/12xtalpit.jpg --
The reason a USB thumbdrive stopped working: tacking the loose crystal
lead down better brought it right back to life. A lesson in how
shoddily-built offshore electronics fail
pix/dcr_hp/ --
High-resolution scans of some old maps and park plans around Harold Parker
State Forest and surrounding Andover. This was a project for the
Friends of Harold Parker resources page
random/cat_s41.html --
Various review text about owning a smartphone, signaling my [partial]
assimilation into the Borg hive-mind
power/gz.html --
Technical inquiry into Goal Zero power-source products in the "Yeti" line,
and the resulting email conversation with their support department
random/wikitls.html --
An attempt to get Wikipedia and related sites to NOT insist on encrypted
transport for open public-domain content, after they screwed up their
accessibility by insisting on TLS 1.2 level connections and rejecting
all others from "outdated" clients
random/ff-no-phone.txt --
A quick helper to zero out most of the "phone home" web destinations in
Firefox releases, preventing probes back to mozilla.org for updates,
extensions, search plugins, and other obnoxious telemetry we don't need
pix/f1fix/ --
Fixing a hyper-sensitive F1 key on a new laptop, with a tiny paper shim.
Also commentary on NVMe storage, a RANT about Ubuntu release architecture,
and some laptop-innards porn
The geeky wallpaper page has
been split out to a separate index. Most picture links are unchanged,
and new ones periodically get added
Video stuff
video/umatic/ --
Resuscitation of an unusably dirty U-matic video deck
video/spg-422-eco.jpg --
Got a Tektronix SPG-class sync generator with a flakey power supply
that won't reliably start up? Here's a fix for it [shown in red]
Nobody needs this corporate crap.
Do yourself a huge favor:
https://www.facebook.com/help/delete_account
You can "follow" me right here, where I control my own content.
Assuming, of course, that the hosting provider's infrastructure doesn't
get compromised. These days, that's a bit of a crapshoot.
Image disclaimer: Requests for "original" or non-watermarked material
are denied by policy, no exceptions. Sorry.
Contact:
I normally read mail at avian.org, should you wish to get in touch,
but if that doesn't work
I'm reachable here at techno-fandom.org too. Use the obvious mapping to
determine either email address,
and please do feel free to contact me about any of the material here!
Can't find something you thought might be here? You're not looking
closely enough.
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