Digest for sci.electronics.repair@googlegroups.com - 17 updates in 6 topics

qetsponsorship@gmail.com: Dec 07 08:01AM -0800

mike <ham789@netzero.net>: Dec 06 08:49PM -0800

On 12/6/2017 6:23 AM, Foxs Mercantile wrote:
> With Ryobi, you get to order each part individually and
> assemble it yourself.
 
> Yeah, I did this for a living for a while.
 
Like I said, if you use 'em to make a living, you might
want something better.
 
I've been buying tools of many brands at garage sales and thrift stores.
In 40 years of household use I've never broken a cordless tool.
It's always the batteries that go dead.
 
So, you end up with a Makita drill with a dead battery and a good
battery for a B&D drill you don't have and a similar B&D drill
that won't fit that battery. And a Porter Cable battery with no tool.
and a big box of perfectly good tools that need batteries.
And a 'toxic waste dump' of random dead batteries.
 
Any 18V Ryobi tool I have works on any Ryobi 18V NiCD or lithium
battery I have.
Yesterday, I bought a Ryobi 18V drill at a thrift store for $2.50.
Works great with a lithium battery pack.
I bought the $1.50 light and replaced the incandescent with LED.
And the second $1.50 light is gonna get turned into a 120VAC supply.
Not sure what I'm gonna do with the 3rd $1.50 light, I got carried away.
I passed on the $3 circular saw because I already
have more of those than I need.
 
Ryobi is the sweet spot for "good enough" tools cheaper than dirt,
available everywhere.
We don't need no stinkin' repair parts. ;-)
tabbypurr@gmail.com: Dec 07 02:38AM -0800

On Thursday, 7 December 2017 04:50:38 UTC, mike wrote:
 
> Ryobi is the sweet spot for "good enough" tools cheaper than dirt,
> available everywhere.
> We don't need no stinkin' repair parts. ;-)
 
Take the NiCd cells out of the unuseful packs & recell the wanted ones
 
 
NT
mike <ham789@netzero.net>: Dec 07 03:31AM -0800

>> We don't need no stinkin' repair parts. ;-)
 
> Take the NiCd cells out of the unuseful packs & recell the wanted ones
 
> NT
 
One problem is that all the wanted ones have more cells than the
not-yet-completely-dead packs.
 
I've tried rebuilds on multiple occasions.
Problem is that if one cell is dead, the others aren't far behind.
I have computer controlled power supply and loads that I've used to
try to match used cells. Best you can hope for is matched crappy
performance. Most often encountered symptom is at least one cell
that works just fine after you charge it, but self discharge takes
it to zero in a few days.
 
Problem with tool batteries is reverse charge.
You're drilling along and the drill starts to slow down.
Well, you've only got two more holes to drill, so you do it.
Now, you have at least one reversed cell. And it gets worse
every time you do it. When a cell is damaged it's capacity is
lower, so it's the one that gets reversed again next time.
 
Tool batteries are overcharged, overheated, over discharged, vented,
left unused for years. By the time you need em, they've self discharged
and some cells are likely shorted, which means the others get
overcharged and vent.
 
You find that a new battery cost about as much as a new tool set.
Then the tool sits in the basement until you decide to clean up
and sell it at a garage sale or give it to Goodwill.
 
I've bought a lot of used tool batteries. They are almost never good,
And new cells cost about as much as a new battery.
 
Much of this can be avoided by paying attention and taking care of
your batteries. But 99.9% of the people don't know, don't care.
That's why they go bad and you find a dead cordless tool at virtually
every garage sale. People who take care of their tools don't sell
em for 25-cents at their garage sale.
tabbypurr@gmail.com: Dec 07 04:20AM -0800

On Thursday, 7 December 2017 11:32:51 UTC, mike wrote:
> That's why they go bad and you find a dead cordless tool at virtually
> every garage sale. People who take care of their tools don't sell
> em for 25-cents at their garage sale.
 
I've always thought 12v & 14.4v ones could be run off a car battery or a small SLA sat on the floor. But really no-one is that short of dough these days.
 
 
NT
Michael A Terrell <mike.terrell@earthlink.net>: Dec 07 05:59AM -0500

> anymore. There probably is a store in NYC where you could buy one if
> you want to have it today, but I don't know where that store is.
 
> I don't get money or other consideration from any companies mentioned.
 
 
Some of those old Gateway win 95 computers used the ATX connector,
with non standard wiring. A lot of angry people scrapped the computers,
because of the cheap, non standard power supplies. I picked up couple
truckloads of them where I worked, as they died.
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Dec 06 06:08PM

Letter to FBI/CIA/KGB ... Here are 10 ways to easily unlock Face ID
 
1. Kill the guy - but don't shoot him in the face. Unlock with dead face.
2. Drug the guy if you don't want to kill him - then open his eyes. Bingo!
3. Just snap a picture of the guy - build a 3D face - paste 2D eyes. Bingo!
4. Exhume his dead twin. Use that face. Hurry up tho - they spoil fast.
5. Just compel, by law, his alive twin or kids to unlock the phone.
6. Trick the guy into looking into his phone (easy to do myriad ways).
7. Tap the guy on the shoulder while he's sleeping in jail - bingo!
8. ?
9. ?
10. ?
Misaki Arai <"AraiMisaki45prefecture@"@yahoo.co.jp>: Dec 06 06:44PM

> 8. ?
> 9. ?
> 10. ?
 
8. Create an trojan horse app to collect face id & save on CIA servers.
9. Or just subpoena any server that all ready collect your face data.
10. Or just tap net lines to any of those app servers to get your face.
nospam <nospam@nospam.invalid>: Dec 06 01:53PM -0500

In article <p09bmb$jpj$1@gioia.aioe.org>, Harry Newton
 
> 1. Kill the guy - but don't shoot him in the face. Unlock with dead face.
 
won't work.
harry newton <harry@is.invalid>: Dec 06 06:58PM

He who is nospam said on Wed, 06 Dec 2017 13:53:15 -0500:
 
>> 1. Kill the guy - but don't shoot him in the face. Unlock with dead face.
 
> won't work.
 
If a 3D mask with 2D eyes works, why wouldn't an unconscious body work?
nospam <nospam@nospam.invalid>: Dec 06 02:21PM -0500

In article <p09ela$o3c$1@gioia.aioe.org>, harry newton
 
> >> 1. Kill the guy - but don't shoot him in the face. Unlock with dead face.
 
> > won't work.
 
> If a 3D mask with 2D eyes works, why wouldn't an unconscious body work?
 
because it requires active eye contact. dead people can't do that.
 
also, the 3d mask with 2d eyes required many attempts to align it
properly for it to work at all. they didn't show you all of the failed
attempts leading up to the one that worked.
 
they also knew the passcode, so whenever it failed (which it did), they
could unlock it and keep trying.
 
a dead person can't tell you the passcode, so once it locks, game over.
Your Name <YourName@YourISP.com>: Dec 07 09:06AM +1300

On 2017-12-06 18:44:58 +0000, Misaki Arai said:
 
> 8. Create an trojan horse app to collect face id & save on CIA servers.
> 9. Or just subpoena any server that all ready collect your face data.
> 10. Or just tap net lines to any of those app servers to get your face.
 
11. Find the guy's doppleganger ... everyone on the planet reportedly
has seven other people that look like them.
harry newton <harry@is.invalid>: Dec 07 12:43AM

He who is nospam said on Wed, 06 Dec 2017 14:21:23 -0500:
 
>> If a 3D mask with 2D eyes works, why wouldn't an unconscious body work?
 
> because it requires active eye contact. dead people can't do that.
 
All they have to do is paste "2D printed infrared images of eyes use the
same technology that is used by Face ID in detecting facial image."
 
Says so right here:
<https://www.inquisitr.com/4651962/apples-face-id-got-fooled-again-by-a-3d-printed-face-mask/>
And here:
<http://appleinsider.com/articles/17/11/27/apples-face-id-with-attention-detection-fooled-by-200-mask>
And here:
<http://zeenews.india.com/mobiles/apple-iphone-xs-face-id-fooled-again-this-time-with-a-200-3d-mask-2061271.html>
etc.
 
It's so easy to fool, we can come up with a dozen ways to fool it, and
we're not even security professionals.
 
There must be hundreds upon hundreds of ways to fool it by someone with a
couple hundreds bucks to spend (hint ... CIA, KGB, FBI, criminals, etc.).
 
> also, the 3d mask with 2d eyes required many attempts to align it
> properly for it to work at all. they didn't show you all of the failed
> attempts leading up to the one that worked.
 
You think the FBI cares about failed attempts?
That mask cost 200 bucks for heaven's sake.
 
Comey, your twin brother, spent more than that just *printing* his resume
for heaven's sake.
 
> they also knew the passcode, so whenever it failed (which it did), they
> could unlock it and keep trying.
 
You think that's going to slow down the CIA/FBI/KGB?
They must be licking their lips in glee over Apple's face id marketing
fiasco.
 
> a dead person can't tell you the passcode, so once it locks, game over.
 
You wish. We can come up with a dozen ways right off the bat which will
work. You think the CIA doesn't have people who understand this stuff.
 
They must have HUNDREDS of ways to trick it.
Face it, Face ID is a gimmick to make apple users *feel* safe.
 
It doesn't help anyone be safe (it's actually worse than a passcode because
your face is farmed out to foreign servers).
 
Apple marketing won't tell you that because they are marketing a gimmick.
nospam <nospam@nospam.invalid>: Dec 06 10:21PM -0500

In article <p0a2qn$1n73$4@gioia.aioe.org>, harry newton
 
> > a dead person can't tell you the passcode, so once it locks, game over.
 
> You wish.
 
no need to wish. unlike you, i know how it works.
 
you do not.
 
after five failed attempts or 48 hours has passed (or a few other
things), a passcode is required. no more face attempts. period.
 
without the passcode, everything on the device is inaccessible, outside
of brute forcing a 256 bit key, which will take billions of years.
 
> We can come up with a dozen ways right off the bat which will
> work.
 
no you can't.
 
you might *think* you can spoof it, but you can't nor have you even
tried any of your supposed dozen ways.
 
> You think the CIA doesn't have people who understand this stuff.
 
they understand it way the hell more than you do.
sms <scharf.steven@geemail.com>: Dec 06 01:37PM -0800

On 12/5/2017 3:58 PM, Clifford Heath wrote:
 
>> The whole family is girls.
 
> All the more reason to encourage them to learn to make and fix stuff.
> Geek girls rock!
 
My wife, before we were married, installed a car stereo in her car. My
daughter is very good with that kind of stuff. In the Americorp
organization she joined after college, they do outdoor education and
they train everyone in the use of power tools and in construction
techniques. I helped out last weekend building garden beds. I pre-cut
all the lumber and brought it. Her fellow volunteers were very good at
putting the whole thing together, drilling, screwing pieces together,
and understanding the whole design. I don't know if they could have
planned the whole design and done it in a way that minimized lumber
costs, and that did not depend on the fasteners for structural
integrity. OTOH, my son was never into any of this kind of stuff.
 
My belief is that the lack of mechanical ability among many youth and
adults is based on two things:
 
1. Japanese cars. Far fewer mechanical breakdowns and less maintenance
led to the end of dads spending time with their kids showing them how to
change oil, plugs, points, rotors, and adjust timing on high-maintenance
vehicles. The whole skill set of using tools and fixing cars was lost.
Car maintenance teaches skills that are transferable to many other
applications.
 
2. Immigrants from countries with low-cost labor. My Indian friend told
me that it took a lot of getting used to life in the U.S. because in
India even middle class people have multiple servants to help out, i.e.
cooks, cleaners, gardeners, drivers, etc.. In China, labor is so cheap
that the middle class hires laborers and there is no "do-it-yourself"
mentality, it is viewed as demeaning to do home improvements like
painting or fixing plumbing problems. In the U.S., skilled and unskilled
labor is expensive so the "do-it-yourself" mentality and infrastructure
developed.
Ed Pawlowski <esp@snet.net>: Dec 06 07:05PM -0500

On 12/6/2017 4:37 PM, sms wrote:
 
> vehicles. The whole skill set of using tools and fixing cars was lost.
> Car maintenance teaches skills that are transferable to many other
> applications.
 
Better standard of living is part of that. We drove some really cheap
cars that broke down frequently too. We had a part time job to buy a
$50 car. Now daddy buys junior a fairly new more reliable car.
> that the middle class hires laborers and there is no "do-it-yourself"
> mentality, it is viewed as demeaning to do home improvements like
> painting or fixing plumbing problems.
 
I could learn to like that.
Peabody <waybackNO584SPAM44@yahoo.com>: Dec 06 12:39PM -0600

whit3rd says...
 
> it's getting warm (this has happened to me). Be safe,
> if you open up that socket (live wires even AFTER
> turning the breaker off is not unknown).
 
I tried it on a different socket, but no change. Also
exercised every connection I could get to, but wasn't able
to get any further improvement. It's bright enough to be
useable for the time being, so I'm going to declare victory.
 
Thanks for the comments.
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