Electrical Engineering

user367890

00:19

@ThePhoton: If I am not mistaken it is a film resistor (ref. post). As 2W is “too small” i guess it is a 3W+. Do you know if there is a online ref. for size vs. wattage or the like?

The Photon

@user367890 I'd just look at datasheets for the same type of part.

user367890

00:51

@ThePhoton: You lost me :) I have tried to find a datasheet for the TV, but no luck. It is a Ferguson 14M2 CRT TV. Reason for the “work” on this artifact is that it is used in a art composition. (Including LaserDisc, 90's projectors etc. :P) Have spoken with some people in the industry of repair, but they were reluctant to do anything without schematics.

Asmyldof

01:52

Creampuffs

Giskard42

@Asmyldof Nay, profiterole

Asmyldof

Blahrmysnaqs

Giskard42

@Asmyldof My normal method is useless here

Asmyldof

Secret nomnoms

Giskard42

@Asmyldof Ah, got it

Asmyldof

01:59

Sclumpfglorkglork

Giskard42

Hmm, not sure if that's right :)

Asmyldof

o.O

Giskard42

@Asmyldof Do you have a profiterole-based glitter issue?

Asmyldof

I have lack of glitter and other such feminines ... counts?

Giskard42

@Asmyldof Better than an abundance of glitter

stuff goes everywhere

Asmyldof

02:02

Glittery ladies. Funs

Giskard42

@Asmyldof That's... not what I meant.

but okay

Asmyldof

Gievs glittery ladies

nao

Giskard42

Not that I've encountered, though, as a nerd, I have an essentially zero sample size.

Shalvenay

@Giskard42 chasing glitter is a good analog for chasing super-tiny SMD parts I suspect though ;)

Asmyldof

Haz not got 01005 in his bed

Also no glitter :'(

Giskard42

02:07

@Shalvenay I wonder what the resistance and inductance of fine glitter powder would be

Shalvenay

@Giskard42 no clue lol

Asmyldof

Mylar-like with alumina

Statistically dissipative at best

Giskard42

I would love to see someone specify, instead of a zero-ohm link in a schematic, a small piece of glitter

Get the pick and place people to chew on that

Asmyldof

equates to small strip of ESD tape

i.e. 0.5 GOhm or so

Giskard42

@Asmyldof So you're saying I can replace my esd mat with a pile of glitter?

Asmyldof

02:10

Noh

Because statistically ONE piece of glitter comes somewhat close to dissipative

FIVE come close to insulative

Millions ARE insulative

Giskard42

@Asmyldof So you're saying I can replace my down jacket with a layer of glitter?

Asmyldof

I should have drunk more at the bar I just came home from

Sure, single layer of glitter with no further mass of any kind in the same space will be a vast improvement

If you take me litterative, so can I take you litterative

The Photon

02:51

Me in November: If I come to Asia, it will be easier for me to debug the new hardware that's in Asia.
Boss: We're on travel restriction to reduce costs.
Me in December: If I come to Asia, it will be easier to get the driver software working correctly on the hardware that's in Asia
Boss: We're on travel restrictions to reduce costs.
Me in January:...well, nevermind then...
Boss: I got approval from management for you to travel, can you be here next week?

Now to get approval from 6 layers of management on two continents in time to buy a ticket to get to Asia before late Friday afternoon next week....

Asmyldof

08:47

@ThePhoton "I'm sorry, I'm under travel restrictions in 2017 to reduce hypocrisy"

abdullah kahraman

09:42

Hey @Asmyldof

:D

What is the limit until you hit the customs' fee, when you want to import something from say AliExpress?

ANSWAR MY QUEASTIOANZ

Asmyldof

Can't. You don't live in my country

abdullah kahraman

13:35

@Asmyldof Why would I ask you if I'd lived in your country?

Asmyldof

Doesn't matter, since you don't.

Import rules, regulations and reliability of those are local, not international

abdullah kahraman

In my country it is limited to 30 EUR now. It's also said that Europe average for this limitation is 28.5 EUR. I just wanted to ask and have a rough idea

Oh, and by the way, I have started learning German slowly.. Do you have any suggestions on any "video series" that have elementary German spoken in them?

Asmyldof

I don't know anything about any import regulations not confined to my location, postal agency usually estimates value regardless of label if it's big. Anything above 50~70 gets customed. Customs handles it as import above 35

@abdullahkahraman You ask this not of me, surely, as a Dutch person

abdullah kahraman

@Asmyldof Ooops, sorry :|

W5VO

14:06

Well... Major freak out over the first snow of the season

Asmyldof

@W5VO Surely half the country just now stopped believing in climate change?

W5VO

They have closed schools over 5mm of snow. Just barely enough to turn blacktop roads white.

Asmyldof

Politicians are by definition sensible people

Fixed the sewing machine. Fixed my coat. Just in time to go out into the freeze for a 1 hour interview with a candidate that won't be a new hire

W5VO

So much optimism

You know, you can turn them down before the interview

Asmyldof

14:41

@W5VO Management is ... special these days

's all I'll say

But I'm making them pay me 2.5hours for it

And also, I only saw just before I left he now works for that supplier with "the amazing discount"

10% negative bias going in

but a chance for +20% if such things come up in frustrated manner

The Photon

17:29

@W5VO 5mm snow on average probably means drifts in some places deep enough to get compressed into stuff you don't want to drive on...or that you don't want the guy next to you driving on.

Depending if you are in a place where people get practice driving on snow more than once a year.

Giskard42

@W5VO As a Canadan, close schools at 5mm off snow is hilarious

The Photon

@Giskard42 SF area, didn't even have snow. Just a cold enough night to cause some black ice. And it sounds like a worse-than-normal commute as a result.

Giskard42

@ThePhoton Hmm, black ice is pretty bad, makes sense

The Photon

@Giskard42 Also, there probably isn't a salt truck within 150 miles of here.

Giskard42

@ThePhoton Ahh, that explains it.

JRE

19:13

@abdullahkahraman Start reading rather than hearing/speaking. You have more time to look up words, and don't have to contend with regional accents (of which there are many, and many nearly mutually incomprehinsible.)

I recommend starting with the Bild (www.bild.de). It is a newspaper written for popular consumption. The writing style is clear and direct, and much easier to read than the more serious nrwspapers. Just don't take it seriously. It is often inaccurate, and mote often sensationalistic. It also tends to have pictures of partially nude women - whether that is a disadvantage or not is up to your judgement.

Asmyldof

While you're here, can I force you to buy ESD mats yet?

JRE

I learned German from the Bild, and I've been living and working in Germany for over 20 years now, speakinf German only at work.

@Asmyldof How much do you want for a mat?

Asmyldof

:-P Depends on the size

JRE

How much per meter length, in what width?

Asmyldof

Chat-room people only, current estimation is 18 per, at 1m width. Final decision can depend on test results, on account of they will be shipped to me anyway :-)

End price is heavily dependent on import charges though

As I only round up to the euro for chat-room'ers

Asmyldof

19:35

I'm hoping it'll be roughly equivalent to the 38eur/m @ 10m \\ 80cm stuff in webshops here

JRE

19:52

Mark me down for 2 meters.

Asmyldof

I'll do some tear and heat test n stuff on a small strip when it's here.

After which y'alls is allowed to adjust numbers down by 100% or up a smidge :-)

Asmyldof

20:42

@JRE Don't feel pressured though, it was mostly a joke.

Although, if you happen to need 25mm2 wire .... >.<

For strangling an elephant or such

The Photon

21:42

@Asmyldof 25 square millimeters or 25 millimeters, squared?

Asmyldof

as per cable notation. But have an AWG4 if that makes you more comfortable

The Photon

@Asmyldof Got time for an Atmel question?

Cause my code seems to occassionally get hung up on this:

while(!(REG_OSCCTRL_STATUS & OSCCTRL_STATUS_DFLLLCKC)) ; /* Wait for DFLL coarse lock */

Asmyldof

Time, buckets. Attentionspan and clarity * shrug *

The Photon

Actually, I'm not even sure how my colleague figured out this is where the bug is.
When I run it, it never hangs if the debugger is attached.

But it does occassionally hang (somewhere) if the debugger is not attached.

Asmyldof

Presumably you init I/O before it?

The Photon

21:46

Any idea what knobs to turn that affect the DFLL locking?

Asmyldof

toggle a pin, see if it's true

The Photon

@Asmyldof You mean setting which pins are ins and which are outs?

Asmyldof

Whatever you do to make your pins do what you do want them to do

The Photon

@Asmyldof Yeah, I could do that, but I don't think that's how he did it.

Asmyldof

Technically DFLL lock isn't influenced by debugger

The Photon

21:47

@Asmyldof Shouldn't be...but....

Asmyldof

What is influenced and top of my suspicion list is exception states

The Photon

Turns out I am doing this clock initialization before doing IO pin initialization, but I don't think there's any reason it has to be that way.

Asmyldof

There isn't

As long as there is a core clock, you can IO

Doesn't matter which clock is driving it

To give an example, which may be involved, depending on what you do around DFLL, is mathematical exceptions creating an interrupt

With the debugger, overflows, underruns and divide by zero will not cause a hardware exception on most Cortex Cores, while without the debugger by default they should

This exception is often bare, i.e. A hang state

I discovered this by adding a specific blink pattern of my LEDs to each hardware exception

Once upon a time

Now, if you don't know for sure the debugger makes a difference, but only sure it doesn't for DFLL... that's a different story.

Not vastly

Because the DFLL is a hardware process

Maybe there is a sync step you're forgetting? Only thing I can think of that might hang a processor around clock stuff

Although My experience with Atmel implements of ARM is that they've done a decent job of preventing core hangs

My gut feeling says it's probably an uncaught process branch

Whichever form it takes in your code

But then, before TI I always put everything on PEBKAC (even my own projects though)

Can say I've been wrong often with Atmel

The Photon

Possibly interesting observation: When I see the thing hang, pushing a button that should do nothing but change a voltage on an analog comparator input pin can get the system reset or past the hang-up somehow.

Asmyldof

22:03

Reset can be anything

Past hang-up ... * shrug *

Serious debugging always requires knowledge of what's going on, and you can't share enough detail for that

Can only rattle off thoughts until you dejectedly return to a lab and connect dots on your own

Asmyldof

22:58

0:00 is a good enough bed time if you only slept 3 hours

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Electrical Engineering