The Smell of Molten Projects in the Morning
Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.
For some odd reason, Linear Tech’s LTSpice IV simulator has a hotkey to stop a simulation (Ctrl-H), but not one to start the run.
Add one:
Done!
Birds flow through the Hudson River Valley during spring and fall migratory seasons, leading to tragedies such as this:
We think it’s a Swainson’s Thrush that mistook our bedroom window for open sky:
We’ve tried several techniques to prevent birds from making that mistake, but to no avail.
It weighed 38 grams, a bit heavier than the typical 30-ish grams reported in our bird books. If I were flying to Mexico I’d want a little extra padding, too.
I put it out for recycling in the back yard; in Nature, nothing goes to waste…
Father Vaughn taught that precept to everybody he managed: he expected complete technical and personal honesty. That meant you did your best, reported the facts, and didn’t tell different versions of the same story to different people.
It was painful to watch him in meetings with his manager who had, shall we say, a tendency to skew the truth in certain situations.
Dilbert is a documentary of what happens when you don’t live by that rule…
We frequently host touring bicyclists who need a campsite in the Mid-Hudson Valley. The most recent couple has been riding for two years, starting eastward from Paris shortly after their wedding. Yeah, it’s a honeymoon trip.
After riding through Western and Eastern Europe, the Middle East, and several of the ‘Stans, JeanMarc’s handlebar mirror broke in Kazakhstan. Marie toted the carcass out of the ‘Stans, across India, through China, and then from Montreal to here. They’re biking to Houston, where they’ll fly to Peru, ride south and across the Andes, and work their way across the Atlantic on a cargo ship that eventually docks in Germany. Then, a year from now, they’ll just bike back to Paris.
Makes you feel like sludge, too, doesn’t it?
With that as prologue, JeanMarc wondered if I could fix the mirror mount. It started as a 10 mm plastic ball on a molded plastic fitting with an integral worm screw and strap; of course, the ball stem snapped off during a hard landing or some such event that comes naturally during long-distance riding. We kicked around some ideas, rummaged through the heap, and came up with a workable, albeit hideous solution.
I applied a Dremel slitting wheel to a pair of Zerk grease fittings, sliced off the inlet valve, extracted the valve spring, and cleaned up the residue to leave a somewhat misshapen 9.3 mm (really a scant 3/8 inch) ball-like end. A bit of lathe work converted a chunk of PVC pipe into a sleeve grooved for a metal hose clamp. I drilled two #3 holes, tapped them 1/4-28 (which, believe it or not, is the correct thread for a Zerk), bandsawed the pipe in half, introduced the pieces to Mr Belt Sander to round the edges, screwed Zerks into holes, and wound up with a pair of these:
Which looks awful on the handlebars, but we’re pretty sure it won’t break and he has a spare if the mirror on Marie’s bike snaps off:
The Zerk fitting could unscrew, but the threads aren’t exactly in pristine condition after all that fussing and seem to be jammed firmly in place. If we had more time, I’d have heated the PVC and molded it around the handlebars, but we decided that wasn’t really necessary.
They rode off into the distance this morning… may you have smooth roads and a tailwind, JeanMarc and Marie!
We met this Praying Mantis on the bike rack outside Skinner Hall at Vassar College. Even knowing they’re harmless, I’d have trouble picking it up; we parked on the other end of the rack.
If these things were any bigger, they’d be terrifying…
One of the Coopers Hawks that keep the rodents under control around here landed atop a pine tree and spread its wings to dry out:
Shortly thereafter, the second hawk arrived and the pair shared some Quality Body Maintenance time:
The first image comes from the Sony DSC-H5 with the 1.7 tele adapter. The second is from the Canon DX230HS with the digital zoom set to 2x “digital tele adapter mode” and the optical zoom cranked all the way out; they’re both small crops from larger images. Not much to choose between the two, although the Canon wins hands-down for convenience.
While thrashing around with that DVD player, I finally figured out that VLC stores its configuration settings in ~/.config/vlc/vlcrc. I don’t know if it’s supposed to update that file automagically after twiddling the GUI config settings, but it doesn’t; I must manually edit the file to get a sticky change.
Anyhow, the vital setting for that particular drive turns out to be audio synchronization, as set by the audio-desync parameter. The audio must lag the video by 400 ms, thusly:
# Audio desynchronization compensation (integer) audio-desync=-400
And then it Just Works…
The Smell of Molten Projects in the Morning 