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John Bump
Works at Texas Instruments
Attended Reed College
Lived in denver
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John Bump

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Sometimes, 'die' is a verb and a noun simultaneously.  The majority of silicon in this chip is a big switching fet, but it's uninjured: the controller was what blew out.  That's weird.  Usually largely signal-oriented silicon can't draw enough power to decap a chip.  It's still useful to know for potential applications.
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Well that really sucks the excitement out of it. Some people think that it is the smoking gun during troubleshooting, but really it may just be a symptom. Nothing worse than thinking you found the actual problem replace the components and it still doesn't work correctly.
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John Bump

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When liquid water falls from the skies, strange larvae are summoned to the surface of the earth.  Who knows what they'll grow into.
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You could always make one... although they're for sale on ebay for under $30, with a hard-to-imitate retro authenticity.
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John Bump

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We got this ginormous phono/radio/8-track cabinet, over 2m long.  8track didn't work so I spliced in a beaglebone with a soundcard and ethernet so it's an internet radio controlled by the next track button from the 8track.  It reads a flat text file of URL's, but as anyone who liked grooveshark knows, URL's change, so it hangs on dead addresses.  I built a comparator that looks at the audio output and converts that into a slow series of 0 and 1: a one-bit, millihz a/d converter.  But +Adafruit Industries's otherwise awesome python gpio library makes clearing the pullup/pulldown resistors on the inputs very difficult, so I'm having issues getting the beaglebone to listen to its own sound.  Grumble.
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Even better to use the clanky 8 track mechanism if possible!
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In yet more unintentional wildlife encounter news, a raccoon got on the deck, where Lily's dogfood is stored, just as I opened the door to get more food for her.  She went after the raccoon like a shot, there was a bunch of snarling and thrashing, and the raccoon bailed and jumped off the deck.  Yargh.
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+Andy Dillon
It was at night and Lillian has had her rabies shot.
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John Bump

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Lousy project of the evening: took all the old disposable tax info, chucked it in the fireplace, lit it up, opened the damper, and a juvenile bird trapped in the chimney fell right into the fire, which promptly burnt off all its feathers.  Oh and somehow it tore off a toe.  Blood everywhere.  Poor little bird.
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Probably.  I suppose I could weave something out of all that titanium wire I have.
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So this happened in the back yard today at about 9 AM.  Breakfast was, as a result, held at OMGDonuts in old town Arvada.  They're pretty good.
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Someone released the "magic smoke"
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Important stuff to remember: when the dishwasher dies, and I remove it, the drain line from the washer to the sink works perfectly well in reverse.  That means that turning on the garbage disposal will dump piles of water out on the floor.  Also: sorry I've been so quiet for so long.  I had a lot of stuff to deal with.
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I hope things are okay. You know I am always around to talk. Welcome back. 
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John Bump

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Update on the weird liquid water falling from the sky problem.  We totes got this covered.  I took this at noon.
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I live in Montana, and its always weird to remember that there are places colder than Montana (its been pretty warm here, lately).
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There is this weird liquid water stuff falling from the sky.  We have no idea how to deal with it.  But it's okay: apparently it'll turn into snow for the next couple of days and we're comfortable with that.  I hope the front bed survives.  One of the tomatoes already has grape-sized fruit, but it's still inside.
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If John and Nikki flood, we're all underwater!
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Frame, welded of 10x30mm steel tubing, for a friend's fossil, so it would be very securely held on the wall for display.  The fossil is about 60cm x 40cm, of a mid-Cretaceous skate.
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heh~
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100mm Geiger–Müller tube with clip mounts on proto pcb designed in KiCAD.  The more I use it, the more I like it.  It supports group-based rulesets, so the final version of this board can have all the 1000 volt traces sufficiently isolated from surrounding metal to not spark over.
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Ignore that -- it looks like I was using the 2013 edition Windows build. There are much newer builds available that are probably much better than my experience.
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Among the dubious projects I've done over the last six months, arguably the least useful was making a class-D audio amp out of an Arduino Uno and a motor driver chip.  http://madscientisthut.com/wordpress/daily-blog/arduino-uno-as-a-class-d-amplifier/ It sounds like a cheap 1970's am radio, but it's a cheap way to get into playing with register hacking.
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+John Bump Adafruit has a readymade one that is so cheap you should try it.
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Have him in circles
4,913 people
Craig Smith's profile photo
Maqbool Ahmed's profile photo
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Ron Owens's profile photo
Muthu kumar (Aj)'s profile photo
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E Zampieri's profile photo
Work
Occupation
electron wrangler
Employment
  • Texas Instruments
    present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Previously
denver - loveland colorado - leadville colorado - portland oregon - seattle washington - boise idaho - fort collins colorado - eugene oregon
Links
Contributor to
Story
Tagline
Mad scientist
Introduction
John, aka Random, aka smellsofbikes, aka several other things.
Bragging rights
Mad scientist. Not crabby, just at an oblique angle to reality.
Education
  • Reed College
    chemistry, 1986 - 1988
Basic Information
Gender
Male
Relationship
Married
Other names
Random, smellsofbikes, jens, solipsist
They had what I needed, found and brought it out fairly promptly, and helped me load it. They have a great assortment of wood and hardware besides.
Public - a year ago
reviewed a year ago
1 review
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