Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 18845450 times)

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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128250 on: August 01, 2022, 10:26:08 pm »


mnem
I like butterflies.
alt-codes work here:  alt-0128 = €  alt-156 = £  alt-0216 = Ø  alt-225 = ß  alt-230 = µ  alt-234 = Ω  alt-236 = ∞  alt-248 = °
 
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Online Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128251 on: August 01, 2022, 10:43:27 pm »
Correction : you only like them as targets to exercise the aiming device of your flame thrower.

Poor butterflies  :(
 
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Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128252 on: August 01, 2022, 10:43:44 pm »
Then there's the treatment these things receive at the hands of the courier. That can be anything from normal rough treatment, chucked in the back of vans, to thrown 5 ft onto concrete.

Although they don't say this specifically in their terms and conditions, my local post organisation has been seen telling customers who have had their goods destroyed during transport that any package has to be able to withstand having 35kg dropped on it from a height of two metres. About the only thing which would survive that is a sheet steel box!

I know why they say it as well. Packages get sorted on an automatic parcel sorter which images all sides of a box to find the address as it is carried on a conveyor. A computer reads the postcode and when the box passes an exit on the conveyor for the correct area, the box is simply shunted off the conveyor into a cage. If your parcel happens to be the first in the cage, anything up to the maximum allowed weight can subsequently be dropped on top of it. The cages that the parcels are sorted into are nearly two metres tall and the height of the conveyor needs to enable the cages to be placed at the exit belt.

Hmm, that's kinetic energy of 686J. That's around the energy of a 9mm parabellum round or a sledgehammer blow. I don't think the Post want to transport parcels, I think they want to destroy them.  :)

Quote
This also means that adding "Fragile" or other such tapes to your package is totally irrelevant. Everything gets loaded into the same sorting machine and all packages are handled the same way.

Yeah, it looks like "Fragile" markings are way out. How about reactive armour?  >:D
« Last Edit: August 01, 2022, 10:46:18 pm by Cerebus »
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128253 on: August 01, 2022, 10:49:55 pm »
@Cerebus I would go for simpler installations. Charlie has shown us how, so I would try to locate some bamboo sticks, a shovel, some stuff to conceal the sticks with, ...

Doesn't have the visceral satisfaction of hearing the drawbridge clash home. And it pongs more than the moat would.
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Online Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128254 on: August 01, 2022, 10:53:06 pm »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few nice ones.

- A couple small ceramic DIP packages that I have no idea what they are just yet. Looks like they are made by " MMI " whoever they are.  I am sure someone here knows.

- A cool blue plastic DIP package

- A big white and gold DIP 40 ceramic package, a beauty that I will keep, even though I already know I will never ever use it since it's marked as NEC D765AD which according to the interweb is a floppy disk drive controller... what am I gonna do with that.  :palm:

- Three LM741CH op-amps in a TO metal can.... still sold today on Mouser for a whooping 20 Euros a pop !!!  :wtf:
I am rich... will help pay for the next petrol tank, need to fill up the car in the coming days.

... some more chips that I have yet to Google, maybe some more interesting stuff, who knows...

DS1489  DIP14
75452 DIP 8
TS4116-20NL  DIP16.... looks like a memory / PAL / GAL kind of part number...
555 I wonder what that is  :-/O
D3-6402-9 DIP40 , static RAM I guess....
µA747 ... a Boeing ASIC I assume ?!  :-DD
TDA1085C ....audio amp ?!....

« Last Edit: August 01, 2022, 10:56:57 pm by Vince »
 
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Online tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128255 on: August 01, 2022, 10:57:38 pm »
you need to either install TomTom maps on your phone and pay the subscription or grab one of their stand alone sat navs with lifetime free updates to maps and camera database, that way you get a gentle reminder if you're speeding on most roads and also get advance warning of any speed cameras and red light cameras as you approach them. I have never received a speeding ticket in 56 years of driving.

Can you please explain to me what legitimate use a red light camera warning system is. The only use case I can see is for scofflaws who want to deliberately run most red lights (endangering everybody in the process) and not get caught by the few traffic lights with enforcement cameras. There is no plausible explanation of how technology designed to subvert red light enforcement is going to contribute to road safety.

That's a solid argument.

Quote
We've had the conversation about speed cameras before and I'll just reiterate my argument that if you're going to exceed the speed limit than you should be exercising enough attention and observation that spotting a speed camera well in advance is child's play by comparison. If you don't have the skill to do that then you shouldn't buy a chunk of electronics to allow you to speed with impunity. Better still, just don't speed.

That's a less solid argument.

The most important thing is to be looking out the window at things you might hit, and anything that detracts from that means the argument is less compelling.

It used to be easy to predict the speed limit by looking out the window; nowadays there are so many exceptions that the speed limit isn't always obvious. Many roads have speed limits for political or pollution reasons, not road safety reasons.

It used to be that I could gauge speed by the engine pitch and road noise, but no longer. Engines are quieter, with an automatic transmission there is a little connection between the pitch and speed.

Quote
I'm not going to utterly condemn something that reminds you what the speed limit is the way I do devices designed to subvert speed and red light enforcement cameras, but again, if your observation is so poor that you can't figure out the speed limit of the road you're on, then it's so poor that you'd fail a driving test, and thus really shouldn't be driving unsupervised until you've improved it.

The problem where do you direct your very limited central vision?
At the speedometer means you aren't looking out for hazards.
When going around a corner, do you look out for pedestrians/scooters crossing at your level, or upwards towards where a 20mph sign might be?
Around here pedestrians have the habit of walking down roads when they ought to be on the pavement. Now they claim "covid distancing from other peds", but they were increasingly doing that before covid arrived.
Never forget peds ability to cross the road without looking/listening due to replying to that urgent twatter message or whatever's spewing from their earbuds.
And, though I hate to say it, the shared space brigade do have a point: there is so much street furniture and advertising designed to catch your attention, that sometimes it is easy to miss the important sign. (Naturally the shared space advocates ruin their argument by taking it to ridiculous extremes)

So, there is another use case for a warning. Someone that intends to drive safely and within the limit, but has kept their eyes away from the speedo or missed an unexpected (and sometimes inexplicable) sign.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128256 on: August 01, 2022, 11:05:57 pm »
I can resume sorting the few remaining IC's I had dug out the other day.
DS1489  DIP14
75452 DIP 8
TS4116-20NL  DIP16.... looks like a memory / PAL / GAL kind of part number...

All from memory...

TS4116 = 16k x 1 bit SRAM

D765 = not an FDC controller. It's an OTP microcontroller. Think it had something like 1K of OTPROM and a few bytes of RAM. It probably ended up as an FDC.

DS1489 = RX end RS232 driver. Or TX end. Can't remember. Usually paired with 1488 at the other end.   

MMI = probably custom PROMs looking at the manufacturer and package. Same as the bugger that blew up in my 465B.  Based on what looks like an NSN number on them they are probably programmed with some random shit already.

Rest no idea  :-DD
 

Online tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128257 on: August 01, 2022, 11:08:44 pm »

Quote
There are a few rallies later in the year that are a bit far, but I think I'll do. Milton Keynes or Torbay. Hack Green because it's been recommended.
Quote
There's also the tiny one at Weston-super-Mud.

Not going to trog to MK without good reason (please don't mention TNMoC).

I've wondered about Hack Green but thought it too far, or the National Rally near Newark but that doesn't seem to be happening.
I haven't been to TNMoC but I mean to go.

The one at W-s-M is very small but it's quite close, probably very close to you.

I was recommended to go to Hack Green because the rally is good and the bunker is worth seeing.

MK and Torbay are the same day and both the same distance, Torbay is the easier drive. It's a question of which is likely to be the best.

There's one in Newport, just across the Severn bridge.

I'm prepared to go further after two years of rally deprivation.

Newark seems to be on.

https://www.nationalhamfest.org.uk/

I have friends who live in Mansfield I've been meaning to visit for a time. Hmm, I could combine the two. Somehow it seems not the done thing to disappear in the middle of the weekend and come back with a load of old junk.

Combining a hamfest with another visit is ideal, and ought to sway the decision. Hack Green bunker falls into that category for me.

TNMoC is wonderful; where else will the staff whip out the schematics and start discussing the first (39-bit) computer I used as a schoolkid? Or see the world's oldest operating computer, based on dekatrons. Bletchley Park next door is the usual kultural tourist trap; avoid.

I stand corrected about the national hamfest. I suspect there wasn't any info when I last looked.

I quite like the Newport rally, partly because it is near and it isn't too bad.

Really like the Didcot/Harwell rally; looking forward to next February.

"Rally deprevation" is an effect; so is "silent key" :(
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Online tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128258 on: August 01, 2022, 11:13:55 pm »
I need to get it in property again ASAP but can’t until this deal is 100% closed and I’m out.

The problem is that the property prices have been rising (ridiculously) over the past couple of decades due to the low bank loan rates.

The estate agent mantra is "don't worry about the multiple you are borrowing, only the affordability matters". Until, that is, rates rise, people lose jobs, can't afford repayments and negative equity looms. The last time that happened "Bradley Stoke" was renamed "Sadly Broke". I remember the earlier version where interest rates went from 9% to 15%. That hurt, and I avoided the issue in '89.

Now, if "cash is king" isn't true anymore and property isn't liquid (or edible!), where should money be stashed? Answers in a PhD thesis, please.

Security against other peoples stupidity is what your investment should be in. That means:

1. A property that you own outright with no mortgage ties or leases to look after.
2. Enough cash to survive an intermediate crash of society.
3. Energy independence.
4. Transport independence.
5. Not requiring employment.
6. A house full of stuff to piss around with.

I’ve nearly ticked all the boxes now  :-DD

Cash is only uesful if you can get it (think "hasn't been lent to 15 other people") and people believe in its value (think "wheelbarrows"), and there's something to buy (think "food or Taiwan/TSMC").

Energy independence. Start by reading, learning and inwardly digesting https://withouthotair.com/ Pdf available, look at who has given good reviews - big oil, big environmentalists, politicians.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Offline Squarewave

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128259 on: August 01, 2022, 11:16:25 pm »

Quote
There are a few rallies later in the year that are a bit far, but I think I'll do. Milton Keynes or Torbay. Hack Green because it's been recommended.
Quote
There's also the tiny one at Weston-super-Mud.

Not going to trog to MK without good reason (please don't mention TNMoC).

I've wondered about Hack Green but thought it too far, or the National Rally near Newark but that doesn't seem to be happening.
I haven't been to TNMoC but I mean to go.

The one at W-s-M is very small but it's quite close, probably very close to you.

I was recommended to go to Hack Green because the rally is good and the bunker is worth seeing.

MK and Torbay are the same day and both the same distance, Torbay is the easier drive. It's a question of which is likely to be the best.

There's one in Newport, just across the Severn bridge.

I'm prepared to go further after two years of rally deprivation.

Newark seems to be on.

https://www.nationalhamfest.org.uk/

I have friends who live in Mansfield I've been meaning to visit for a time. Hmm, I could combine the two. Somehow it seems not the done thing to disappear in the middle of the weekend and come back with a load of old junk.

Combining a hamfest radio rally with another visit is ideal, and ought to sway the decision. Hack Green bunker falls into that category for me.

TNMoC is wonderful; where else will the staff whip out the schematics and start discussing the first (39-bit) computer I used as a schoolkid? Or see the world's oldest operating computer, based on dekatrons. Bletchley Park next door is the usual kultural tourist trap; avoid.

I stand corrected about the national hamfest radio rally. I suspect there wasn't any info when I last looked.

I quite like the Newport rally, partly because it is near and it isn't too bad.

Really like the Didcot/Harwell rally; looking forward to next February.

"Rally deprevation" is an effect; so is "silent key" :(

I love TNMOC, went to one of their table top sales and came away with more stuff that I don't need. I must be due another visit too at some point.
 
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128260 on: August 01, 2022, 11:23:14 pm »
you need to either install TomTom maps on your phone and pay the subscription or grab one of their stand alone sat navs with lifetime free updates to maps and camera database, that way you get a gentle reminder if you're speeding on most roads and also get advance warning of any speed cameras and red light cameras as you approach them. I have never received a speeding ticket in 56 years of driving.

Can you please explain to me what legitimate use a red light camera warning system is. The only use case I can see is for scofflaws who want to deliberately run most red lights (endangering everybody in the process) and not get caught by the few traffic lights with enforcement cameras. There is no plausible explanation of how technology designed to subvert red light enforcement is going to contribute to road safety.

We've had the conversation about speed cameras before and I'll just reiterate my argument that if you're going to exceed the speed limit than you should be exercising enough attention and observation that spotting a speed camera well in advance is child's play by comparison. If you don't have the skill to do that then you shouldn't buy a chunk of electronics to allow you to speed with impunity. Better still, just don't speed.

I'm not going to utterly condemn something that reminds you what the speed limit is the way I do devices designed to subvert speed and red light enforcement cameras, but again, if your observation is so poor that you can't figure out the speed limit of the road you're on, then it's so poor that you'd fail a driving test, and thus really shouldn't be driving unsupervised until you've improved it.
Simples, many of the red light cameras these days also have a speed camera within them, I know of at least 1 or 2 here in Chelmsford. I agree, don't speed, I try not to speed, I have never made a habit of speeding or setting out to break the law in any way, be it civil or criminal, but the plain truth is that these days it is so easy to lose one's licence if you are not 110% on the ball and it is so very easy to be distracted at the crucial moment of entering a speed restricted zone, so you miss the sign. The speed camera database does not, it alerts you to the fact that you are approaching a camera, you have to look at the screen to discover what the speed limit is, it does not verbally announce it. There are stretches of the A13 in East London that have varying speed limits ranging up and down between 60, 40, 30, 50, and I dare say, now even 20mph, all within a mile or so. The TomTom and similar devices, don't just issue a warning as you approach the camera, they continue to monitor your location and should you make the mistake that you think you are in a 40 zone, but actually in 30 or 20 zone, it will constantly remind you to check your speed. Likewise, they will also constantly monitor your speed while in an averaging zone, as you will be aware (hopefully) that it is not unlawful to go faster than the speed limit in such zones, as long as your average speed between camera locations is at or below the limit, so you can overtake slower vehicles if you want to.

They also warn you of accident black spots, possible mobile camera locations and also congestion charge zones, so NO they are devices that allow you to speed and just slow down when you have to in order to pass a camera, they are truly a road safety device, they alert you to the speed limit for the road you are driving on, EVEN if there are no cameras on it. The will always show the limit for that road on the screen, but will not alert you if there is no approaching camera, or you are below the limit, as soon as you go over the limit, then they alert you, if you ignore them, they will continue to alert you. As a person, who over 30 years has been in a job which required a clean driving licence, I consider such devices as an essential tool just as much as you do the tools of your trade or hobby.

Now if you have an old fashioned speed camera detector that detected if a camera was emitting radar waves or not, then yes, you are breaking the law as those devices were purely aimed at drivers who wanted to speed and only obey the limit when a camera was active. TomTom, being a sat nav is purely GPS based and so can only tell you where cameras are located, it cannot tell you if it is currently active or not.

British Police are happy with these systems as they are in effect, doing a good job of making people aware of their speed, and this is very useful when driving in strange places that you don't know what the limits or where the cameras / hazards are. If you don't have one, that's cool, its your choice.
« Last Edit: August 01, 2022, 11:37:05 pm by Specmaster »
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Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128261 on: August 01, 2022, 11:24:28 pm »
They do have EZ pass ..

In the excrement hits the encabulator case you should also have some non standard things to trade for bread, food, water, ...
Like a flock of Kangaroos, or a forest of Maple trees ...
I am sure you get the gist ...

EZpass is for locals, I just have mastercard. Would be so easy just to tap your card to pay for the toll.

You don't have to be local to get one. See link.

https://www.e-zpassny.com/en/signup/facility.shtml
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128262 on: August 01, 2022, 11:32:50 pm »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few were nice ones.
FTFY
Antistatic management nowhere to be seen !  :scared:
Avid Rabid Hobbyist.
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Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128263 on: August 01, 2022, 11:33:07 pm »
you need to either install TomTom maps on your phone and pay the subscription or grab one of their stand alone sat navs with lifetime free updates to maps and camera database, that way you get a gentle reminder if you're speeding on most roads and also get advance warning of any speed cameras and red light cameras as you approach them. I have never received a speeding ticket in 56 years of driving.

Can you please explain to me what legitimate use a red light camera warning system is. The only use case I can see is for scofflaws who want to deliberately run most red lights (endangering everybody in the process) and not get caught by the few traffic lights with enforcement cameras. There is no plausible explanation of how technology designed to subvert red light enforcement is going to contribute to road safety.

We've had the conversation about speed cameras before and I'll just reiterate my argument that if you're going to exceed the speed limit than you should be exercising enough attention and observation that spotting a speed camera well in advance is child's play by comparison. If you don't have the skill to do that then you shouldn't buy a chunk of electronics to allow you to speed with impunity. Better still, just don't speed.

I'm not going to utterly condemn something that reminds you what the speed limit is the way I do devices designed to subvert speed and red light enforcement cameras, but again, if your observation is so poor that you can't figure out the speed limit of the road you're on, then it's so poor that you'd fail a driving test, and thus really shouldn't be driving unsupervised until you've improved it.

I only apply my absolutism to software engineering  :-DD

And with that can the regular fistycuffs folk please refrain from fucking up this thread thanks. I'm going to bed. Hopefully there is no ruin in the morning.
Have some faith, will ya, this is a sensible discussion unless C is deliberately stirring the pot  ;) Heaven forbid  :-DD :-DD
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128264 on: August 01, 2022, 11:35:20 pm »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few were nice ones.
FTFY
Antistatic management nowhere to be seen !  :scared:

Still can't sleep. Will stir the pot.

Anti-static gear is mostly pointless for hobby use unless you're dealing with really old MOSFETs, really old 4000 series while walking around in a shell suit scuffing your crocs on your nylon rug  :popcorn:
 
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128265 on: August 01, 2022, 11:38:44 pm »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few were nice ones.
FTFY
Antistatic management nowhere to be seen !  :scared:

Still can't sleep. Will stir the pot.

Anti-static gear is mostly pointless for hobby use unless you're dealing with really old MOSFETs, really old 4000 series while walking around in a shell suit scuffing your crocs on your nylon rug  :popcorn:
Stirring right back at ya !  :P
Despite what argument you forward the reality is conductive foam is so cheap you just can't ignore it:
https://nz.element14.com/multicomp/039-0050/low-density-foam-305x305x6mm/dp/1687866?st=antistatic%20foam

FFS even tinfoil works if you are really that hard up.  :horse:
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128266 on: August 01, 2022, 11:41:10 pm »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few were nice ones.
FTFY
Antistatic management nowhere to be seen !  :scared:

Still can't sleep. Will stir the pot.

Anti-static gear is mostly pointless for hobby use unless you're dealing with really old MOSFETs, really old 4000 series while walking around in a shell suit scuffing your crocs on your nylon rug  :popcorn:
Stirring right back at ya !  :P
Despite what argument you forward the reality is conductive foam is so cheap you just can't ignore it:
https://nz.element14.com/multicomp/039-0050/low-density-foam-305x305x6mm/dp/1687866?st=antistatic%20foam

FFS even tinfoil works if you are really that hard up.  :horse:

Yeah that stuff smells bloody awful when you burn it with a soldering iron  :-DD

 
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128267 on: August 01, 2022, 11:44:48 pm »
Yeah that stuff smells bloody awful when you burn it with a soldering iron  :-DD
So does flesh, your point is ?  :-//
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Offline Kosmic

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128268 on: August 01, 2022, 11:49:04 pm »
They do have EZ pass ..

In the excrement hits the encabulator case you should also have some non standard things to trade for bread, food, water, ...
Like a flock of Kangaroos, or a forest of Maple trees ...
I am sure you get the gist ...

EZpass is for locals, I just have mastercard. Would be so easy just to tap your card to pay for the toll.

You don't have to be local to get one. See link.

https://www.e-zpassny.com/en/signup/facility.shtml

Yeah I was poorly prepared  :-[

Driving around New York and Philadelphia is an experience though. I recommend  ;D
« Last Edit: August 01, 2022, 11:51:27 pm by Kosmic »
 

Offline vk6zgo

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128269 on: August 02, 2022, 12:46:49 am »
That quality of print would be perfect for printing very genuine broken HP feet  :-DD

In defense of broken HP feet, in my experience their demise is typically the result of the wonderful 'packing' job that many sellers do.  Truth be told, I'm surprised that more of them don't break!







I'll never understand the thinking process behind "Oh, a layer or two of corrugated cardboard and no other cushioning is adequate to ship a heavy instrument!"   :wtf: :palm:

There are far too many idiots in the world - we need to remove most warning labels and let Darwin resume his noble work.

-Pat

Sadly, there must be thousands of perfectly good hp feet either languishing in  Broadcast, Electronics, & Comm site "tech stores" throughout the world, or if/when those sites are sold off for housing developments, gone to landfill.

It was common practice to remove the feet when rack mounting equipment, as it is an extra, non-functional contributor to the vertical space used by such equipment.

I remember seeing them tucked away in forgotten corners at both of my major former employers.
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128270 on: August 02, 2022, 01:00:47 am »
Now that I have cleared all the GPIB stuff from the bench, I can resume sorting the few remaining IC's I had dug out the other day.

A few were nice ones.
FTFY
Antistatic management nowhere to be seen !  :scared:

Still can't sleep. Will stir the pot.

Anti-static gear is mostly pointless for hobby use unless you're dealing with really old MOSFETs, really old 4000 series while walking around in a shell suit scuffing your crocs on your nylon rug  :popcorn:

So basically you're saying that "If you're a Scouser, get some anti-static gear."?  :)

I rarely bother with any formal anti-static gear at home. I'll use anti-static materials for packaging and work surfaces and that's about it. I'll make a vague effort to get myself, boards and parts to equipotential if circumstances such as very low humidity or devices I know to be very static sensitive are in play. I do have a couple of ESD safe "toothbrushes" I use if I have to scrub a board to get flux off, there is such a thing as tempting fate and rubbing two different insulating synthetic materials vigorously over each other would I think fall into that category. I won't let myself do anything stupid like using dry compressed air to dust off a tray of parts or using the cat or a synthetic microfibre cloth as a duster to clean a board up.

So far I haven't knowingly killed anything with static and only had one mysterious failure that *might* have been attributable to static but equally probably wasn't.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128271 on: August 02, 2022, 01:13:59 am »
I rarely bother with any formal anti-static gear at home. I'll use anti-static materials for packaging and work surfaces and that's about it. I'll make a vague effort to get myself, boards and parts to equipotential if circumstances such as very low humidity or devices I know to be very static sensitive are in play. I do have a couple of ESD safe "toothbrushes" I use if I have to scrub a board to get flux off, there is such a thing as tempting fate and rubbing two different insulating synthetic materials vigorously over each other would I think fall into that category. I won't let myself do anything stupid like using dry compressed air to dust off a tray of parts or using the cat or a synthetic microfibre cloth as a duster to clean a board up.

So far I haven't knowingly killed anything with static and only had one mysterious failure that *might* have been attributable to static but equally probably wasn't.
Good advice that mirrors what I do....however I did once kill a PC mainboard with a good dust off with the workshop air compressor.  :palm:
Never considered using the cat though and first thoughts are you probably don't even need to hold it....as it's holding you !  :scared:  :-DD
Avid Rabid Hobbyist.
Some stuff seen @ Siglent HQ cannot be shared.
 
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Offline vk6zgo

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128272 on: August 02, 2022, 01:27:57 am »
That quality of print would be perfect for printing very genuine broken HP feet  :-DD

In defense of broken HP feet, in my experience their demise is typically the result of the wonderful 'packing' job that many sellers do.  Truth be told, I'm surprised that more of them don't break!


I'll never understand the thinking process behind "Oh, a layer or two of corrugated cardboard and no other cushioning is adequate to ship a heavy instrument!"   :wtf: :palm:

There are far too many idiots in the world - we need to remove most warning labels and let Darwin resume his noble work.

-Pat

I know someone who makes a large part of his income selling antiques, and particularly model trains, on ebay. He said that when he first started, he didn't realise how well packed things had to be. He soon found out.

Someone comes by a piece of test equipment like that. They picked it up at an auction or it came from a deceased family member. They sell it on ebay. They are struggling to find a box to put it in. They have to go out and buy plastic chips and bubble pack, so they are tempted not to.

I've heard stories of bakelite radios turning up in pieces, packed in a couple of plastic carrier bags. That is plain stupid.

Then there's the treatment these things receive at the hands of the courier. That can be anything from normal rough treatment, chucked in the back of vans, to thrown 5 ft onto concrete.
Back in the day, we used to carry, amongst other stuff, Polyskop SWOBs around the State of Western Australia on routine inspection (& often emergency callout) trips.

This was OK when we could put the stuff in the back of a HiAce & head off, but sometimes we had to fly.
This entailed sending the test equipment via a transport company.

The Polyskops were transported in substantial aluminium road cases, prominently displaying a warning that they were heavy, & directing people to get assistance to lift them.

On one occasion, a Polyskop, when it reached the remote site, "rattled".
It turns out, a heavy part had come adrift, & taken out several lighter parts.

Apparently, one of the transport blokes had read the warning, thought "Bloody wimps!", & proceeded to lift it by himself, which indeed you can do, but the "hard part" is placing it gently down after that.
It seems like he dropped it the last few inches, which was enough to bugger the internals. |O

We fixed it OK, but it was a bit of a hassle.

On another occasion, where I wasn't directly involved, we received two Harris MF B/C Transmitters from the USA.

One arrived OK, but in the other, a nice big modulation transformer had run amuck inside.
It was normal practice to remove the heavy transformers & ship them separately, but in this case, the Tx were sent fully assembled, at the tender mercy of "wharfies" at both ends of the trip. :scared:

Noob shipping person, or the work of bean counters?  ???

We managed to fix it eventually, but it was a hassle
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128273 on: August 02, 2022, 01:29:10 am »
Talking of the cat, I'm sure most people have seen that thing cats do when they're not sure that something is safe but they are still curious. They will stretch their nose towards the thing, suddenly flinch back a bit, stretch a bit more, flinch back and so on until they decide whether it's safe to properly sniff or to bugger off. I just almost pissed myself watching the cat do exactly that to one of my socks poking out of a discarded trainer - three flinches and a bugger off.  :-DD
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #128274 on: August 02, 2022, 01:33:04 am »
On the Bench Tonight: Thrift Score IR Thermometer



So... on my way home from the Dr.'s Office (followup on my blown-out knee and acute tendonitis), I stopped in at a thrift store for some retail therapy to ease the misery of "you're tore up from the floor up... you need lots of drugs that are gonna tear your stomach up... oh, and a new knee":o

Found myself a nice comfy pair of fat-ass cargo shorts, and this was on the shelf behind the register marked $5.99when I went to check out. Obviously it followed me home. ;) Not exactly sure where the association with FLIR came from though...  ???  *does a little Guugle-Fu* Well, hell. Looks like FLIR bought out EXTECH in 2007, and they're both cousins under the same TELEDYNE umbrella as my new LeSiglent scope.

Well, fuck-a-doodle-doo!  :-//




Case is in nice condition... foam is even still firm and dry; not at all flaky.  :-+ Decent operating range; up to 1000°C. Good for checking to see if your catalytic converter is coming up to temp like it should.




Oooh... shiny. Well, rubbery.




Ahhh... squaddie-resistant design. The important settings are actual switches right under the flip-door so even auto mechanics should be able to figure out what they care aboot.  :-DD




Passes the reality check... it thinks my marble slab workbench is ~21°C. Everything I tried it on, it agrees within a degree against my decades-old RayTek. Unlike that, the LASER pip still work on this one.  :P




This thing has some smarts; MIN/MAX/AVG/DIFF Modes, plus it blinks SCANNING while you're holding the trigger so you know the sample period.  :o The red button toggles between various combinations of BL or LASER ON/OFF/TRIGGER-ON. Noodling around the EXTECH website, it appears from the manuals I could find that it is circa 2014-2016.

Current model, which is identical specs except 50:1 FOV rather than 30:1, is $314 MSRP. KA-CHINNG!

Looking further, it appears it has temp compensation for emissivity as well. Good thing I have a manual... :clap:


mnem
great. now I have another tool that knows more about what it's doing than I do... :-DD
« Last Edit: August 02, 2022, 11:42:32 am by mnementh »
alt-codes work here:  alt-0128 = €  alt-156 = £  alt-0216 = Ø  alt-225 = ß  alt-230 = µ  alt-234 = Ω  alt-236 = ∞  alt-248 = °
 
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