Test Equipment Anonymous (TEA) group therapy thread

[grizewald]

Windows only, even if there was an English version.

Is it really true that there's no way to do a (this OR this OR this) AND (this OR this OR this) NOT that search on eBay?

[med6753]

The evil deed is done.    Case re-painted.



The capacitors for the PSU have been ordered and should be here Monday.

[AVGresponding]

Very nice, Papa Smurf   


EDIT: Hah, forgot to post some pics.

Been making test lead tidies out of YT2 minitrunking this afternoon:



By the time the lockdown is over, I'll probably have a tidy workspace!

[BU508A]

Perhaps you can run it in WINE.

This is what I've found:
https://community.ebay.com/t5/Buying-Selling-Basics/What-is-the-syntax-to-search-for-something-such-as-quot-jugs/td-p/27684809

Quote:
Yes you can use some Boolean logic in eBay search. I have done it many times.

 

https://pages.ebay.com/help/search/advanced-search.html#using

 

Using search operators (Boolean logic)

 

Our searches aren't case-sensitive, so it doesn't matter whether you use capital or lowercase letters.

 

To refine your search and get more precise results, you can combine search operators with your search words. This is also known as Boolean logic.

 

Operator
   

What it does
   

Example

Quotation marks (also known as double-quotes)
   

Searches for the exact word or phrase in the listing title
   

"Action" DVD returns listings that have the exact words Action and DVD in the title in any order.

"Action DVD" returns listings that have these 2 words in the title in this specific order.

Parentheses around keywords separated by commas
   

Act together as an OR operator

Note: Use parentheses and commas together for best results
   

(purse,handbag) returns listings that contain either the word purse or handbag in the title.

Minus sign (-)
   

Acts as a NOT operator

Note: You need a space before the minus sign and no space after
   

Red -shoes returns listings that have red in the title and do not have shoes in the title.

bowl -(black,green) or bowl -black -green returns listings whose titles contain the word bowl but not the words black and green.

 

For example, the OP could use a search like this to find all listings with diode in the title and having a specific value of 1A or 2A or 3A.

 

diode (1A,2A,3A)

 

The OP would have to list all values they are looking for and hopefully most listing titles by sellers will follow the value in the search that the buyer used.

[McBryce]

...
299A is actually relatively low for a diesel, it must have been quite warm where you were. I work in the automotive electronics industry and in cold start conditions we expect anything up to 550A on start-up. So we fuse for 600A.

McBryce.

Temperatures in Portugal are not the same as in Germany, but I'm sure I took that picture for some reason, and that may be due to end of battery life or some other related problem.

Anyway, the point was to remind bd139 not have a current probe of 100A max, plugged in those conditions.

The low-temperature tests we do aren't done in Germany, they're done in the far north of Norway where it's extremely cold.

McBryce.

[Mortymore]

Wrong assumption then. The flag deceived me. Sorry 

I edited my previous post just to add that I though to measure the current in my actual car, but I couldn't, because of the cabling in the positive terminal. Out of curiosity, measure on the thicker cable on the negative side, but it peaked at 60A.

Thanks for your reply. 

[bd139]

The evil deed is done.    Case re-painted.



The capacitors for the PSU have been ordered and should be here Monday.

It’s a Bluke! 

[Cerebus]

It’s a Bluke! 

Last time I made a noise like "bluke" I had a lot of white porcelain in front of me.

[bd139]

Indeed. worshipping the porcelain god.

[med6753]

LMAO 

[Saskia]

hey, it's about Corona, not Noro ...

[tautech]

hey, it's about Corona, not Noro ...

Not here.......take that there>>>>> https://www.eevblog.com/forum/chat/covid-19-virus/

[Wolfgang]

The evil deed is done.    Case re-painted.



The capacitors for the PSU have been ordered and should be here Monday.

The lord of the Fluke will raise from the waves and tar and feather you in Keysight black. How dare you ? 

[Saskia]

sorry. WIll be trying to revive my uv pcb gizmo in a few mins.

[worsthorse]

I'm back. Got there just before 6 AM and there was a line of about 10 waiting to get in. And word got out that it was for 60+ only but store staff was right there at the door making sure. Store was certainly much busier than I see at 6 AM but not packed. But as I was checking out there were a lot more old folks coming in.

Store store stock was generally OK but some shelves empty. Oatmeal and paper napkins as an example. The meat aisle was still a wreck but better than last week. I did manage to get some chicken drumsticks which isn't even my typical 3rd choice but better than nothing.

And everyone just went about their business. Some wore masks. And this new "social distance" of 6 feet or more.

Same here. My instacart order got finished about seven hours after scheduled time, so I picked it up last night. The woman that shopped the order said that the market was pretty well stocked. Even the chicken I included in the order was available. The store had set up a line outside, with markers to keep people separated, and was limiting the number of people in the store, which seemed to be working pretty well. The line wasn't long and moving quickly, no one seemed to be panic buying.

So I know how to do that now if I really need to.  We won't need anything for at least a couple of weeks and unless things change, I'll do my usual grocery run, only during the sixty plus hours.

EDIT: ...and I make a solemn promise that my next five posts are going to be about TE.  really.   

[SilverSolder]

The evil deed is done.    Case re-painted.



The capacitors for the PSU have been ordered and should be here Monday.

That looks kind of cool.   What type of paint do you use for this?

[factory]

Some interesting Gossen MetraWatt Nixie/Needle meters for someone in Germany. I'm very tempted, but funds are low at the moment:

https://www.ebay.de/itm/324113684527

At €76 for two of them, I'll probably regret not taking them next month. 

McBryce.

I love when this guys overload a needle meter     

(Attachment Link)

(Attachment Link)

Well according to his article description, "the needle is all over the place". So I don't think he intentionally overloaded it.

McBryce.

Thanks for sharing those, I regretted not buying the last one on ePay, so the two broken meters are now on the way to me. 
Just need to find a service manual now.

David

[mnementh]

Those module were well known not fitted with original LM2956 and the common failure mode is short circuit the Vout to Vin 

   Yeah, well... how about THIS failure mode...? Is THIS ONE well-known?!?  (fuck you, bd... fuck you very cordially, you jinxing bastard. )

So I figure "Okay... drop back & punt." and decide to reassemble it. I can tell the whole damned thing was populated BY HAND.      Well, maybe by FOOT, I dunno. 

Fortunately I've got my big chisel tip and can get enough heat to solder the DPAK sink to the substrate, and then I go through each & every component, pad by pad and make sure it's all soldered correctly and no shorts except the ones I'm wearing... (no, I have NOT learned that lesson YET.  )  and... bupkis. I got continuity through to both inductors, I got Vin at the right pin, but like 300mV output. Caps test good, nearest I can surmise the circuit based on the datasheet, everything is actually connected as it should be. 

By this point, I've had my fill... hunger and lack of caffeine drive me to the kitchen, and after some fumbling there's a fresh pot percolating. I step outside on the balcony with half a cuppa in one hand, rolling the problem around in my mind while rolling the board around in the other hand. The sun just peeking over the trees provides clarity in more ways than one; I put the cup on the rail and just fling the damn module as far as I can into the woods behind my back yard. Instantly my stress & aggravation level drops by 20dB; I step back inside & while I'm buttering my morning bagel, a simple plan for a simple man... err, dwagon... emerges.

      

Engage "getting the fuck on with my life" mode.  I have some little MP1584EN-based switchers on the way, but they'll take a week or six because China,    so all I REALLY care about at this point is powering the 80mm 12V/0.12A Arctic silent case fan I just got in; it replaces one of the screamin' mimi 40mm fans on the printer, the one that cools the mainboard. While I AM pretty certain there's a setting where I could dial down the PWM for that fan channel in the firmware so it only sees 12 of the 24V from the PSU, I'm already annoyed and decide to apply the KISS principle. 500mA L78M12, a 47uF/16V MMLCC cap strapped across the output for stability and a bit of 0.100" pin header.

"But wait..." you cry out "There's no heat-sink, and that's still ~1.5W or so dropped across the poor thing."

But there is: 200mm of 18ga copper soldered right to the heat-sink tab. And another similar mass of copper on the Vout. I gotcher Thermal Design Considerations right heah, bd.     Yes, it MATTERS. Testing in situ reveals it gets just warm to the touch; maybe 45-50°C after 20 minutes. I sleeve it with some heat-shrink and plop the fan in place; put the bottom cover on the printer and set it upright. All told I've spent maybe an hour; that includes making a baffle and a filler panel for where the 40mm fan used to be.

      

I really didn't expect it to make much difference yet; the hotend still has another 40x10mm & 30x10mm screamers on it. But it IS noticeable. Now to print the Petsfang layer-cooling duct so I can install these much quieter 50x15mm & 40x20mm fans before the wife kicks us both to the curb.

mnem
*hammer-hammer... chisel-chisel...! braaap-braaaapppp...!! griiiiiiiiiiiind....!!!*

[bd139]

Hahaha did they use a glue stick to solder that on? 

Saying that the max30100 module I got was a bug ridden piece of shit. Pull ups we’re just WRONG ffs. Pay peanuts get monkeys

[med6753]

The evil deed is done.    Case re-painted.



The capacitors for the PSU have been ordered and should be here Monday.

That looks kind of cool.   What type of paint do you use for this?

Krylon Fusion Satin Rolling Surf.

[Cerebus]

Krylon Fusion Satin Rolling Surf.

Or as it's know in the Med household, "Liquid Bandage".

Or perhaps "Krylon Fusion Satin Rolfing Smurf."

[Saskia]

Flukes in blue satin ...
(sorry, could not resist)

[med6753]

Flukes in blue satin ...
(sorry, could not resist)

Cute. 

[Teti]

Quite a bargain. I've managed to score Siglent SDG2082X Waveform Generator 80MHz 2 channels including TS-9900010 7 Piece Insulated Precision Screwdriver Set (Torx)
for £440.60
use promo code "mjlorton"
https://www.tester.co.uk/siglent-sdg2082x-waveform-generator

[Teti]

Very nice, Papa Smurf   


EDIT: Hah, forgot to post some pics.

Been making test lead tidies out of YT2 minitrunking this afternoon:



By the time the lockdown is over, I'll probably have a tidy workspace!

That's brilliant idea! I'ts like having your own pseudo 3D printer