Tuesday, November 30, 2021

DST setting in La Crosse Technology atomic clock

The clock has a confusing setting: "DST?  on/off".  Documentation does not explain it.

The setting directs the clock to follow or ignore the DST signal present in the WWVB radio broadcast. Even with DST "on", it sets to the correct non-DST time when it is standard (winter) time.  People in Arizona should choose "off"; everyone else should choose "on".  Unless you move to or from Arizona, you don't need to adjust the setting.

Until I did research, I did not know the WWVB radio broadcast included information about Daylight Saving Time.  Until I did research, I assumed incorrectly that the user has to manually toggle the DST setting on the clock twice a year, according to the political whims of Congress and local governments who choose the start and end dates of DST.

Saturday, November 20, 2021

Canon PIXMA TR4520 (TR4500 series) support code 6000

LCD display says "support code 6000". inspired by https://youtu.be/EI63iQmJza4, i opened it up looking for a paper jam.

although i unscrewed every visible screw, only 4 were necessary to access the print head and carriage underneath the scanner bed (platen).  however, one screw is inside the U-turn of the scanner ADF (underneath the controls), which feels loose, like it can be opened, but it isn't obvious how.  how: there is a spring-loaded latch next to the scanner bed: use a narrow tool, e.g., screwdriver, to retract the latch, then the ADF U-turn will open, revealing one of screws to open the printer.  presumably the ADF U-turn is accessible to clear paper jams.

the spring-loaded latch can itself be removed and disassembled.  it's a little bit tricky to put the spring back to reassemble.

after opening, there are ribbon cables between the two parts.  i left those attached.

i moved the carriage back and forth and moved the gears but didn't see any obstructions or jammed paper bits.  reassembled the printer, and error message no longer occured.  happy to achieve victory, but disappointed not to be able to tell what was wrong.

the underside has parts that can be removed by unscrewing.  one of the parts is nontrivial to put back.  there is a wheel or gear with a notch, and things only fit if the gear is at the correct angle to accept a piece. there are two notches, each differently shaped.  i picked one randomly and it worked, and did not investigate fitting the piece into the other notch.

there is a small arm that extends when the gear is at the correct angle.

when the underside piece was not in the notch and printer reassembled, there was some error, but i did not record it.

Saturday, October 16, 2021

Bluetooth dies on Logitech MX Ergo

Logitech MX Ergo trackball, purchased early 2019, 1 year warranty.  Bluetooth initially worked.  Then used for a while with USB wireless dongle.

In late 2020, tried Bluetooth again; it no longer works.  Seemingly its Bluetooth radio has died, unable to be seen from many Bluetooth computers after putting in pairing mode by holding down the center button until the number flashes rapidly.

Complaints that Logitech products have planned obsolescence seem justified.

Friday, December 24, 2010

[pbltqylf] Glommit review

Black Diamond flip-top glommit glove ABG Accessories UPC 794434050822 CVS distributed $2.99

Tuesday, November 30, 2010

Netgear W150 Wireless Router review (wnr1000)

Does not have an "exclude" or "deny" by MAC address, a feature I want. It does allow the creation of allow lists. Similar issue is described http://forum1.netgear.com/showthread.php?t=52604

I'm going to Linksys.

Friday, November 26, 2010

Samsung Galaxy Tab review

Tuesday, August 15, 2006

thinkpad wireless turns itself off

I've been having this problem with this thinkpad (z60t) 11/a/b/g Wireless LAN Mini PCI Express adapter that the wireless keeps turning itself off after about 5 minutes. I hit Fn-F5 to turn it on again, but it turns itself off again after a few minutes.

Thursday, January 05, 2006

firefox simultaneous installer

(windows) when running firefox at the same time as installing a new version, the installer doesn't let me cancel the install to go kill the running the current firefox. "Click OK to forcequit.... no choice whatsoever".

thinkpad mouse

the nipple mouse (ultrapoint)'s occasional bias toward a certain direction is getting more annoying (I'm not sure if more frequent). Sometimes it just goes on its own in a certain direction without me touching it.

Friday, December 30, 2005

semagic introduction

semagic livejournal client, version 1.5.6.3U (windows)

Thursday, December 29, 2005

blogger timestamps

leading zeros in AM/PM timestamps is silly.

Wednesday, December 28, 2005

semagic change back to default user

unfortunately it still changes back to the default user, not the last community, even if unchecked.

pyramid introduction

LED bike light, white, by "Pyramid Pro" model 94538, $7. (J&B importers, Miami FL)

elastic broke immediately.

Tuesday, December 27, 2005

mic pop

Occasionally picks up pops (22khz, 16bit mono)

mic introduction

www.soundprofessionals.com

SP-USB-MIC-1 - SOUND PROFESSIONALS - USB MICROPHONE AND HEADPHONE JACK MONITOR - HIGH SENSITIVITY WITH OMNIDIRECTIONAL PICKUP PATTERN

http://www.soundprofessionals.com/cgi-bin/gold/item/SP-USB-MIC-1

Monday, December 26, 2005

frogpad programmable

green+u and green+i are also availble for programming/remapping. The choice of which symbols are green-shifted varies from application to application, so hard-coding it is questionable.

frogpad initial thoughts

hard to get wrist in correct flat position: use wrist rest?

USB mark should be engraved on the back to make it clear which way the connector plugs in.

Does not come with a mini-USB connector, fortunately I use it for my laptop.

Would be nice if programmable swappable left and right (only swapping the locations of the green mode-shift keys, not letters."

wish a programmable key or two (though pause is available for remapping within emacs). yellow+{symbol, enter, space, shift}?

hard to remember how to get to weird keys, e.g, keyboard numbers, gui, F1, F12, should have quick reference on the back.

Space and Green being time-dependent is tricky.

Online has X below I.

Want feed beeps and clicks for keys and control keys depressed, like Kinesis. Probably achievable in OS.

Frogpad introduction

Frogpad green right-handed USB. ("Frogpad ION class")

semagic authentication

fortunately by default does challenge response.

semagic default community

Cannot set the default posting target to a community.

semagic livejournal client

there is http://www.livejournal.com/community/ljwin32_sema/ and http://www.livejournal.com/users/lj_win32/ the latter hasn't been updated since 2003.