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ggherold@gmail.com: Sep 12 10:57AM -0700 On Tuesday, September 12, 2017 at 10:47:34 AM UTC-4, Jeff Liebermann wrote: > nothing is wasted and everything lasts forever. No civilization has > yet repaired its way to greatness, but we could be the first.   > <https://www.ifixit.com/Manifesto>   Hmm and yet I feel we are fighting in a 'security screw' arms race. I've got my ~100 piece set from harbor freight, https://www.harborfreight.com/100-pc-security-bit-set-with-case-68457.html When I went to take apart my latest coffee maker, I found that the tripoint screw was down a long narrow tunnel, such that the screw driver bit holder was to wide to fit. Curses! Fortunately I fixed the no hot water problem, by running vinegar through the machine several times. But still it does not bode well for future failures.   George H.

"pfjw@aol.com" <pfjw@aol.com>: Sep 12 11:22AM -0700 As far as the life of the planet is concerned, there is little we can do as individuals or as a species that will affect the planet in any material way. All we can do is hasten/impede the next whatisit that comes along following on our heels. But, follow it will despite all our efforts.   Charles Addams had a cartoon: Nuclear Holocaust - last two living creatures on earth (single-cell) look at each other deciding whether to start over or not. One says to the other: "Only, this time, no brains".   Keep in mind that the moment humans became involved with the survival of other humans, evolution (within the human species) effectively stopped dead in its tracks. Evolution has the singular goal to to produce *more*, not necessarily *better* exemplars of any given species - that being the singular definition of "fittest". "Units" that age past the ability to reproduce are impediments to 'more'. Therefore diseases relating to aging are irrelevant to the survival of the species. Diseases that affect reproduction in any negative way at all are impediments to survival. Habits that reduce reproduction are impediments to survival.   And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth. Genesis 1:28, King James   The purpose of the human (any) species is to reproduce itself - per Evolution in any case. Again, evolution has ceased in any meaningful way. Like a shark, either a species improves (moves), or it dies. We are moribund, the only matter for discussion is how long it will take.   Finally, on a planetary scale, even that amount of time will be momentary.   Carpe Diem (Horace)   Peter Wieck Melrose Park, PA

ggherold@gmail.com: Sep 12 04:37PM -0700 > the machine several times. But still it does not bode well for future > failures.   > George H. Hey what happens if I take a drill to the plastic hole. I bust the whole thing up, get the screw out, and then need some longer 'nice' screw to put it back together. It won't look as nice from the back.   If the plastic is thick enough I might make the hole big enough to get the bit holder down it, without breaking.   I need some big jig, to hold things on my drill press.   George H.

Jeff Liebermann <jeffl@cruzio.com>: Sep 12 07:49PM -0700 >Hmm and yet I feel we are fighting in a 'security screw' >arms race.   What? You don't feel more secure with security screws in place? Just think of all the bad things that can happen to the company if one of their screws is not properly secured. Obviously, something must be done to prevent screws from "accidentally" falling out.   >I've got my ~100 piece set from harbor freight, >https://www.harborfreight.com/100-pc-security-bit-set-with-case-68457.html   I have two of the same kits. Far too many duplicate bits.   >When I went to take apart my latest coffee maker,   Latest? I deduce that your coffee makers are exhibiting a rather short half life. Have you considered buying something more durable? Oh wait... I forgot that you can no longer buy quality appliances at any price. Never mind.   >I found that the >tripoint screw was down a long narrow tunnel, such that the screw driver >bit holder was to wide to fit. Curses!   Yeah, that's a common problem. I have a few assorted long round shank screwdrivers that have been modified on my bench grinder and Dremel tool to fit various security screws. If I'm desperate, I'll cut off the top, and braze it to a steel rod. If you're lazy, take a Dremel cutoff disk and cut a notch in the base of the bit to fit an screwdriver blade.   Perhaps this set of extra long security bits? <http://www.ebay.com/itm/263093504682>   >Fortunately I fixed the no hot water problem, by running vinegar through >the machine several times. But still it does not bode well for future >failures.   As long as there is lime (calcium carbonate and oxide) dissolved in your coffee water, you're going to have the problem. The trick is to clean the coffee maker BEFORE it totally clogs and won't pass any vinegar. Unless you like drinking distilled water (it tastes "flat") or you buy a water softener, you're stuck with an occasional vinegar flush.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann <jeffl@cruzio.com>: Sep 12 08:02PM -0700 On Tue, 12 Sep 2017 11:22:16 -0700 (PDT), "pfjw@aol.com" >as individuals or as a species that will affect the planet in any material >way. All we can do is hasten/impede the next whatisit that comes along >following on our heels. But, follow it will despite all our efforts.   Humans have been around for about 80,000 generations. That's not really enough time for a whatisit to appear and take over.   I have no interest in saving the human race, which may be impossible. My only interest is to slow down the trend towards non-repairable products and filling the landfills with devices that can be repaired. We may well meet our well deserved collective demise from our own inventions, but at least with repairable products, the end might be delayed somewhat.   >The purpose of the human (any) species is to reproduce itself - per >Evolution in any case.   Keep it simple. Your purpose in life is to consume, pollute, and over-populate. Failing to perform any of these assigned tasks is severely punished by society. Once you understand that, the rest of the puzzle falls into place without much effort.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann <jeffl@cruzio.com>: Sep 12 08:09PM -0700 On Tue, 12 Sep 2017 03:08:01 -0700 (PDT), bruce2bowser@gmail.com wrote:   >Either way, its nothing that a chemistry book can't fix. (They don't actually bite)   Book? This is the 21st century. Today, we do web pages, blogs, forums, wikis, YouTube tutorials, online courses, and online reading. Books are an anachronism. I tried to read a reference book a few days ago and couldn't find what I wanted. Then, I remembered that there was a table of contents and an index, both of which proved to be useless. I want my search tools, not a word list and pointers to multiple pages. Used in the traditional manner, books can bite if you can't find what you need. I suggest you modernize your suggestion and offer something online instead.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

ggherold@gmail.com: Sep 13 05:18AM -0700 On Tuesday, September 12, 2017 at 10:49:16 PM UTC-4, Jeff Liebermann wrote: > the top, and braze it to a steel rod. If you're lazy, take a Dremel > cutoff disk and cut a notch in the base of the bit to fit an > screwdriver blade. Oh, that's a good idea! I was thinking we/they need to market a bit set that also has a hex shaped indentation on the back side so that you could drive it with an Allen wrench.   > Perhaps this set of extra long security bits? > <http://www.ebay.com/itm/263093504682> Right, the arms race continues.   George H.

Jeff Liebermann <jeffl@cruzio.com>: Sep 13 09:31AM -0700 >> Perhaps this set of extra long security bits? >> <http://www.ebay.com/itm/263093504682>   >Right, the arms race continues.   In a previous life, I had to deal with security screws, which were required by a few customers and creative spec writers. There is an amazing amount of creativity possible. <https://www.google.com/search?q=security+screw+heads&source=lnms&tbm=isch> <https://xkcd.com/1474/>   I thought I was being clever when I specified these fasteners: <https://www.dhresource.com/600x600/f2/albu/g4/M01/1F/C0/rBVaEVekSsSADmOTAADlLkJHrKg618.jpg> but ran into problems when someone shipped the radio to an Arab country.   Google gets my pure evil award for specifying fasteners that use a friction driver on their Google-Mini server: <http://images.anandtech.com/reviews/it/googlemini_final/ethernet.jpg> <http://images.anandtech.com/reviews/it/googlemini_final/screw.jpg> A screw extractor in the hole didn't work because the stainless steel fasteners are hardened and it would slip. I would normally slot the head with a Dremel cutoff tool, but the customer wanted everything back to stock just in case Google would honor the warranty. Eventually, they did after all the electrolytics started to bulge and leak. I had to make a special tool, using a rubber bicycle inner tube for friction, in order to remove the screws, after about 2 hrs of trial, error, and swearing.   I won't mention Apple and their Pentalobe screw heads. I think that the drivers were available on eBay before the iPhone 4 was released, which probably inspired Apple to now glue its products together.   I also run into security screws on bicycles. I would hate to find some of these odd pattern fasteners and not have a matching driver: <http://atomic22.com> <http://www.torontocycles.com/Titanium_Security_Bolts.html>     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

mhooker32@gmail.com: Sep 13 08:33AM -0700 im working on a arcade game board . the tip 120 for an eject soleniod is driven right off the processor leg, no pre -driver transistor. didnt even think that was possible, maybe that why it blew. is there a mosfet i can replace the tip120 with?   thanks

ggherold@gmail.com: Sep 13 08:45AM -0700 > im working on a arcade game board . the tip 120 for an eject soleniod is driven right off the processor leg, no pre -driver transistor. didnt even think that was possible, maybe that why it blew. is there a mosfet i can replace the tip120 with?   > thanks   So a 5 V drive? You could look up logic level mosfets on digikey. Is there a diode across the solenoid drive? (for inductance)   George H.

"tom" <tmiller11147@verizon.net>: Sep 13 12:25PM -0400 <ggherold@gmail.com> wrote in message news:354d1990-f9c9-4078-81ef-6a68d92a207a@googlegroups.com...   > So a 5 V drive? You could look up logic level mosfets on digikey. > Is there a diode across the solenoid drive? (for inductance)   > George H.   The TIP120 is a medium power darlington NPN rated for 60 volts. It has the reverse diode built in.

Adrian Caspersz <email@here.invalid>: Sep 13 02:50PM +0100 I've got a cheap (£25/$30) hand held bagless 500W vaccum cleaner made out of ABS plastic that must create a lot of static electricity when in operation.   http://www.beldray.com/beldray-bel0427-quick-vac-lite-red.html   I'd quite like to use it to clean dust out from electronic equipment.   From another vacuum cleaner (industrial photo-copier maintenance thing) I have a short conductive hose and various end tools, so I'm almost there; but I need to ground something - possibly the hose coupling to the cleaner.   Would that work? Or would the passing air circumvent it, and become charged anyway.   If so, I think I might need to make conductive and internally ground parts of the vacuum cleaner, using metal loaded paint and/or aluminium tape. Work that I want to avoid if possible.   -- Adrian C

"~misfit~" <shaun.at.pukekohe@gmail.com>: Sep 14 01:26AM +1200 Once upon a time on usenet rickman wrote: >> odd mix.   > Of course seat belts are compulsory. Where do you live that they > aren't?   I didn't say they aren't here, I remember that not long ago they weren't in the US. Are they compulsory in the back seats too? -- Shaun.   "Humans will have advanced a long, long way when religious belief has a cozy little classification in the DSM*." David Melville (in r.a.s.f1) (*Diagnostic and Statistical Manual of Mental Disorders)

T i m <news@spaced.me.uk>: Sep 13 01:23PM +0100 Hi all,   I reported a while back that my Ansmann Energy 16 multi-bay Nicad / Nimh charger had stopped working and that I felt the fault was in the SM psu.   Long short, I first replaced the main bridge rec diodes and an onboard 3A SB fuse and saw 300 or so Volts on the inboard side of the bridge, I couldn't see anything worthwhile on the 4 PSU output plugs so changed the PWM switches and opto isolators (as I had them and they were cheap) but still nothing on the outputs.   So, not sure if the PSU had to be plugged back into the main boards to work I tacked it back together and tried it again and it worked. ;-)   So, other than the known bad diode and fuse I'm not sure if anything else had gone but it's working now ... so thanks to all those who offered help and advice and hopefully this is another feather in the 'these things can sometimes be fixed so it's worth a go' cap. ;-)   Cheers, T i m

MOP CAP <email@domain.com>: Sep 12 07:50PM -0700 It has been over 50 years since I worked at the Fairchild diode plant. Our diodes were in the DO-7 packagen and most were striped marked. I can't remember the fine details of the machine that was used as I was not directly involved. The diodes were fed on to an approx 3" diameter with notched on the circumference every, 30 or so degrees. Before that there was an ingenious device that oriented them for polarity. The marking was to be towards the cathode end. There were 3 or 4 wheels that tapered to the width of the intended line. Each of these wheels ran nto a paint pot with the appropriate color. The diode rotated in the notch on the 3" wheel and against the paint wheel, went one ot two notched past for a semi fast dry and fell into a bin. Sorry I don't have a better memory. CP

JC <Chipbee40_SpamNo@yahoo.com>: Sep 12 02:01PM -0400 On 9/6/2017 12:20 PM, Arfa Daily wrote: > storage scope ? Tried all the usual places, but surprisingly, came up > blank ...   > Arfa Might have a lot in common with the V-152 for which a manual with schematics is available online   https://www.dropbox.com/s/j7kcqo0mvhju4ld/Hitachi%20V-152F%20Oscilloscope%20Operation%20Manual.pdf

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