Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
mnementh:
--- Quote from: bd139 on July 17, 2022, 04:12:21 pm ---
--- Quote from: mnementh on July 17, 2022, 03:52:39 pm ---
--- Quote from: bd139 on July 17, 2022, 11:05:29 am --- ...In other news, frozen pigs just flew out of hell… it looks like it actually works. Have ID’ed the probe sensor doesn’t work properly on one of the channels but that’s an easy fix. Might even work with a clean.
--- End quote ---
For 20 quid...? Def territory!
--- End quote ---
Not quite. Full clean and check out… Issues with channel switching. Looks like dirty switches and possibly a duff probe on my part. Hmm.
--- End quote ---
Huh...? Since when did the acquisition have to be fully functional to be a Jammy candidate? IMO, if it lights up (and the light isn't FIRE!) for 20 quid that's a helluva deal. And look how that cleaned up... you can spend a lot of money making one work and never get it looking that good. :-//
mnem
*eagerly awaiting updates and nekkid 465 pr0n* :popcorn:
Specmaster:
--- Quote from: mnementh on July 17, 2022, 03:23:26 pm ---<snip>
Mmmmhmmm... so inconveniencing someone wealthy enough to own a car is criminal and prosecutable... but destroying lives and making it impossible for whole segments of the population to house or feed themselves, much less own a car, is okay because it's monopoly corporations and politicians doing it, so is just business as usual.
Does cast a stark contrast on the concepts of High Crimes and Misdemeanors vs The Golden Rule, doesn't it? :-\
EDIT: That actually is even more perverse than I originally thought. Consider this all-too-possible scenario:
Entitled dickbag parks in a handicapped spot repeatedly; often enough that someone who actually has the permit notices. Said victim calls the cops and lets the air out of his tires so he can't get away before they arrive. At worst dickbag receives a ticket he can probably get out of if he hires a lawyer; handicapped victim actually faces criminal prosecution and jail time.
mnem
we are fucking doomed.
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That's about it, it's like, at least in the UK, it is not illegal for someone to park their car on your driveway, but it is illegal for you to remove it or damage it in any way :wtf:
mnementh:
--- Quote from: m k on July 17, 2022, 04:09:45 pm ---I broke my half style +4.0 market glasses and new ones are full sized with different type of lenses where only center is the real zoom.
Why I see sort of diminished things with those glasses? I can see closer with them but things are smaller and sort of unreal.
Is that a focal point or some brain thingy?
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My experience with drug-store readers is that unless you pay the bux for name-brand, as often as not the magnification numbers are literally pulled out of someone's arse. Also quality is very hit-or-miss; lens clarity and refractive distortion can be horrifyingly bad on the Chinesium lenses.
It's a good thing I only use them for working at the bench; if I needed them for reading or the computer, I'd be one headachy widdle dwagon.
mnem
Specmaster:
--- Quote from: factory on July 17, 2022, 01:04:01 pm ---
--- Quote from: AVGresponding on July 17, 2022, 10:53:41 am ---
--- Quote from: bd139 on July 17, 2022, 10:15:32 am ---
--- Quote from: Robert763 on July 17, 2022, 09:29:13 am ---
--- Quote from: bd139 on July 17, 2022, 09:10:09 am ---Ok on way back from hamfest now.
That absolute turd arrived at 08:30 and emptied it again >:(
Did manage to grab a manky tek 465, a solartron 7150, some 10 turn pots, TO18 heat sinks and a book to sell. And I still have change from £25 :-DD
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Is the turd a dealer?
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Yes. Same one I mentioned to you last time. He waltzed off with a pile of kit and left the trash for everyone else. Turns up as a seller but doesn't set up, goes round and empties everything off and that's it.
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There are no rules around this? In any case, if he's a known quantity and you can learn what vehicle he uses, it should be possible to run interference and stop him from getting there early, if you can organise a few people for joint action.
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Do they just leave straight after, or do they eventually set up their stall? I guess the organisers shouldn't let them in early if they arrive with nothing to sell. :--
David
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Or of course, they could just make a rule that nobody buys/sells anything until the fest is officially open to the members and public, but that would scupper BD's plans as well :-DD
Vince:
COMPONENT SORTING
Yes... I thought I had sorted all my ICs, but I found some more in a drawer.
Among them a big, huge DIP24 package that read " 74HCT xxx "... I thought no way, how could it be so big..... so looked it up, a 74HCT154, and it's a 4 to 16 decoder. So well yes I guess you do need more than 20 pins to cram it in... still, you get used to logic chips being 14 or 16 pins, not a mega huge, ultra wide DIP 24....
Found another big DIP package, 28 pins, marked MAB8440, no idea what that was. Couldn't find a datasheet for it but found a few datasheets closely related.
Looks like it's an ancient, prehistoric 8 bit MCU, made by Philips, with I2C inside, but some documents make me believe that maybe it's based on an even more ancient processor, an 8048, which might have been made by Signetics, rather. So me guesses that maybe Philips bought Signetics, evolved their old 8048 design a bit to add their obligatory I2C stuff in it, because well, Philips.
So looks like mine has 4KB of mask ROM, programmed at the factory. Also a whooping 128 bytes of RAM.
Found the datasheet for the CPU core of the 84XX , as well as the datasheet for the MAB8441 which apparently is the same as my 8440 but just with an 8 bit LED driver added to it. So could use that datasheet and just ignore the LED bits, I guess.
I wonder if there is a way to read the contents of the internal mask ROM.... can't be bothered to read all the details of the datasheets for now, too hot for that, and I prefer paper, hate reading on screens.
At the very least, I guess one can affirm that there must be SOMETHING in that ROM... or else they would not have packaged the die in that DIP package to begin with...
Maybe at the least, I could try to power it up, give it a clock signal with my sig gen, a reset pulse.... and see if comes back to life ? Maybe it will do something....
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