Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 14785685 times)

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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76275 on: November 28, 2020, 04:24:48 pm »
Looking nice & tidy there, med.

mnem
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76276 on: November 28, 2020, 04:26:37 pm »
Even worse than than SS are the anodised aluminium cap-head screws. Designed for cosmetic applications but nothing to stop people replacing a HT cap-head with cheese :palm:

https://www.ebay.co.uk/itm/M6-x-20-mm-Bolts-Aluminium-Red-Anodised-Bolts-25mm-Red-Screws-M6-Cap-Head-Bolt/172427228357

I have shedloads of those in m2-m4 for my quadcopters.  >:D  Love 'em, but they are high turnover.

Titanium, surprisingly, doesn't last a lot longer IRL as far as the sockets stripping out. Threads do hold up a lot better tho. :-//

mnem
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Offline mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76277 on: November 28, 2020, 04:39:25 pm »
Since it seems to be "peeve-day" let me bring up another one.

Bad machine translations.

Both Mouser and Farnell have them, and while their range of products is sufficiently narrow and allows for better training, it still is bad enough. (Amazon tries to do this as well, and let me state as a fact, that when you try to sell a photo wallpaper of a rapeseed field, it will translate insanely badly if you let a machine do it. It comes out as "A big picture of a rape committed in a field" or something like that.)

Farnell translates "triaxial cable" into the equivalent of "Three-axle cable".  :palm:

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76278 on: November 28, 2020, 04:57:02 pm »
Having rebuilt more than a few such beasts... Your "properly-passivated" screws are usually as soft as case-hardened cheese. And on rice-rockets, also JIS. And a complete dicksore to get out without stripping after they've had a couple decades to trade ions with the surrounding aluminum.

There are always tradeoffs; I prefer to reassemble with  a good hard hex-head (SS or otherwise) equivalent after spending hours with hammer & impact driver and/or EZ-outs getting the fucking thing apart. I might be the poor bastard who has to take it apart next.

mnem
 :popcorn:

Now why am I not surprised that you have your own take on that. Thanks very much, but I'll follow conventional wisdom and keep SS fasteners out of aluminium crankcase castings, and stick to using good quality passivated plain steel and a good gob of the right lube.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76279 on: November 28, 2020, 04:59:45 pm »
Since it seems to be "peeve-day" let me bring up another one.

Bad machine translations.

Are there any other kind? Machine translation is fine to get the jist of something you can't read, but to treat it as a finished product to put in front of customers is a variant of original sin.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 

Offline AVGresponding

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76280 on: November 28, 2020, 05:00:43 pm »
Have you never seen "three-axle cable" before?

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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76281 on: November 28, 2020, 05:05:58 pm »
Having rebuilt more than a few such beasts... Your "properly-passivated" screws are usually as soft as case-hardened cheese. And on rice-rockets, also JIS. And a complete dicksore to get out without stripping after they've had a couple decades to trade ions with the surrounding aluminum.

There are always tradeoffs; I prefer to reassemble with  a good hard hex-head (SS or otherwise) equivalent after spending hours with hammer & impact driver and/or EZ-outs getting the fucking thing apart. I might be the poor bastard who has to take it apart next.

mnem
 :popcorn:

Now why am I not surprised that you have your own take on that. Thanks very much, but I'll follow conventional wisdom and keep SS fasteners out of aluminium crankcase castings, and stick to using good quality passivated plain steel and a good gob of the right lube.
Mayhaps the difference is that in racing applications, the engines are torn down and rebuilt often enough it doesn't matter. Also, I've long been a true believer in tiny torque wrenches (and medium-sized ones, and big ones) and never-sieze. ;)

I rarely used SS except on parts that got taken off and put back on constantly; so crankcase bolts, no. But good grade 5-8 hex-head steel, yes. And definitely on things like brakes and clutch covers; the sockets on the hex-heads just plain last longer with repeated on/off cycles.

mnem
« Last Edit: November 28, 2020, 05:10:55 pm by mnementh »
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76282 on: November 28, 2020, 05:12:12 pm »
Since it seems to be "peeve-day" let me bring up another one.

Bad machine translations.

Are there any other kind? Machine translation is fine to get the jist of something you can't read, but to treat it as a finished product to put in front of customers is a variant of original sin.

I dunno if that's better or worse than our near-daily misadventures with cheap electronics that have manuals written in Chinglish. :o

mnem
That is, when they do have a manual...  |O
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Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76283 on: November 28, 2020, 05:30:24 pm »
Since it seems to be "peeve-day" let me bring up another one.

Bad machine translations.

Are there any other kind? Machine translation is fine to get the jist of something you can't read, but to treat it as a finished product to put in front of customers is a variant of original sin.

I dunno if that's better or worse than our near-daily misadventures with cheap electronics that have manuals written in Chinglish. :o

mnem
That is, when they do have a manual...  |O

The difference is that quite a lot of those look like they've been through machine translation twice, with an intermediate step of "My cousin speaks English, let him translate it for you, very cheap".
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76284 on: November 28, 2020, 05:35:51 pm »
Have you never seen "three-axle cable" before?



 :-DD

Although, that looks to be fiber conduit, and not cable, so no, still haven't seen any..   :palm:

Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76285 on: November 28, 2020, 05:42:25 pm »
"Honey, I shrunk the Capacitors"  :P :P :-DD

All mounted. Left to do: reassemble PSU. Install in scope. Then smoke test.

See you all on Discord later.

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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76286 on: November 28, 2020, 06:08:59 pm »
Looks like it needs viagra now
 
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Offline tonyalbus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76287 on: November 28, 2020, 07:23:05 pm »
Just playing a bit with my Microscope and an ADF4351  :-/O


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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76288 on: November 28, 2020, 07:38:26 pm »
Since it seems to be "peeve-day" let me bring up another one. Bad machine translations.
Are there any other kind? Machine translation is fine to get the jist of something you can't read, but to treat it as a finished product to put in front of customers is a variant of original sin.
I dunno if that's better or worse than our near-daily misadventures with cheap electronics that have manuals written in Chinglish. :o

mnem
That is, when they do have a manual...  |O
The difference is that quite a lot of those look like they've been through machine translation twice, with an intermediate step of "My cousin speaks English, let him translate it for you, very cheap".



Attached below is the only manual available for a mini touchscreen control panel I bought off Amazon yesterday out of curiosity (and to fill out a minimum order); it literally poses more questions than it answers...  :wtf:

Worst case, if I can't figure out how to make it talk to my 3DP I can send it back and keep the rubber duckie. At least that doesn't need a FW update to work. ;)

mnem
 :-/O
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76289 on: November 28, 2020, 07:42:12 pm »
Looking nice & tidy there, med.

mnem
 :-+
Except the double up.  :-//
 :(
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76290 on: November 28, 2020, 07:45:45 pm »
Mayhaps the difference is that in racing applications, the engines are torn down and rebuilt often enough it doesn't matter. Also, I've long been a true believer in tiny torque wrenches (and medium-sized ones, and big ones) and never-sieze. ;)

Copper or nickel based ?
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Offline AVGresponding

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76291 on: November 28, 2020, 07:58:29 pm »
Mayhaps the difference is that in racing applications, the engines are torn down and rebuilt often enough it doesn't matter. Also, I've long been a true believer in tiny torque wrenches (and medium-sized ones, and big ones) and never-sieze. ;)

Copper or nickel based ?

Ugh neither, ceramic of course!

No-one in Discord yet, I may go back to my freshly arrived Bluray box set of Game of Thrones...   ::) :popcorn:
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Offline med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76292 on: November 28, 2020, 08:11:52 pm »
Looking nice & tidy there, med.

mnem
 :-+
Except the double up.  :-//
 :(

Had no choice with that double. For some strange reason could not find an 18000uf/15V at a reasonable price. So I paralleled two 10000uf/16V.
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76293 on: November 28, 2020, 08:19:36 pm »
Exigencies of time/space/budget. Yup.  :-+

mnem
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76294 on: November 28, 2020, 08:21:16 pm »
Mayhaps the difference is that in racing applications, the engines are torn down and rebuilt often enough it doesn't matter. Also, I've long been a true believer in tiny torque wrenches (and medium-sized ones, and big ones) and never-sieze. ;)

Copper or nickel based ?

Ugh neither, ceramic of course!

No-one in Discord yet, I may go back to my freshly arrived Bluray box set of Game of Thrones...   ::) :popcorn:

Well, back then it was copper. Works nicely on brake-part sliders too. ;)

mnem
*poot!*
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Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76295 on: November 28, 2020, 08:33:41 pm »
Mayhaps the difference is that in racing applications, the engines are torn down and rebuilt often enough it doesn't matter. Also, I've long been a true believer in tiny torque wrenches (and medium-sized ones, and big ones) and never-sieze. ;)

Copper or nickel based ?

Ugh neither, ceramic of course!

No-one in Discord yet, I may go back to my freshly arrived Bluray box set of Game of Thrones...   ::) :popcorn:

Well, back then it was copper. Works nicely on brake-part sliders too. ;)

mnem
*poot!*
And now ?
And why ?  :popcorn:
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Offline AVGresponding

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76296 on: November 28, 2020, 08:38:23 pm »
Because the ceramic based stuff never forms electrolytic cells, unlike the copper, nickel, or silver based stuff.
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Offline Saskia

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76297 on: November 28, 2020, 09:00:50 pm »
re machine translations: there is a lot of effort involved in creating a suitable translation model.
And this effort does not come for free.
Also, there are 3 major classes of MT: rule based, statistical, plus neural. They all have their advantages and disadvantages.

My guess is that neither Farnell nor Mouser put a lot of effort into creating the proper custom dictionaries which are a prereq to proper training. Also they would need a lot of so called in-domain data to translate their catalogs appropriately. In-domain meaning: in the language domain, e.g. electronics, electrical engineering, ....
A lot means: if you have a proper general purpose model, you will need to inject your training data and train it for several generations. Training data needs to be at least 100 000 aligned segments (a segment is a phrase at minimum, better yet a whole sentence, and it needs to be aligned (i.e. word mapped to word or expression).
100k segments are the minimum, we recommend 1 M and above. To give you an example: for English to French we have a segment pool of about 275 M segments, pull a random 10 M and create the general purpose corpus. Train it for at least 6 generations, injecting fresh segments.
You would repeat this for specialized language models, and you may want to book your GPU cluster for the next couple of weeks.

Actually I am looking forward to Ampere, to boost it a bit, and I am also looking at CNN on Alveo for this specific topic.


Point is: we currently spend a nice sum plus 2 System Engineers on our machine translation system. We are doing a large five figure amount of translations a day, and we are receiving good feedback. Up to the point where a country directory picks up the phone and calls me directly if it is not running. And we are asking for more support in the form of computer linguists to help us with adaptations.

I doubt that Mouser and Farnell are this committed.

If they are and this is the outcome, they need to start over.
 

Offline McBryce

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76298 on: November 28, 2020, 09:16:08 pm »
Ready to mount on the circuit board.



It's like a capacitors version of the War of the Worlds movie.  :-+

McBryce.
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Offline SilverSolder

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #76299 on: November 28, 2020, 10:26:25 pm »

Those adapters are really cool...
 


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