Yo yo yo :[ ...

Ohaidere

@fuzzyhair2 Yo yo yo!

Think I got a good answer on my RPi question!!!

raspberrypi.stackexchange.com/questions/7978/…

That's great!

@anorton Yeah, little confused though, YO!

Is he talking about me?

There once was a doggie from CLE. Who couldn't lift his leg to pee. He's squat down on the ground, and shimmy around, and end up writing some code in C.

Unfortunately, yes.

Because sincerely I hate see...

If you scroll up a bit, he says he's about to write a limerick about you. :\

@anorton |'[

yeah.... I don't know why people here give you such a hard time... You're fun company. :)

@anorton one more malware vid to go!

@anorton Yeah, thanks!

@anorton It's quite funny though

@coding_corgi That's what I'm at, too! :)

@anorton Boy does he get nervous

@coding_corgi As long as you think it's funny, that's good.

NO TESTS, ARE YOU F***ing me?!

@coding_corgi Yeah... talking into a camera with no feedback from an audience can be daunting...

Corgi, behave! Go to your kennel!

@anorton And they zoom in on this guy's computer, etc.!

@coding_corgi There will be tests in the course... (fyi)

Like he's hacking

@anorton I know, but not yet

@coding_corgi yeah... I don't get that. It's not related to the lecture at all...

A really good course is Discrete Optimization. But it seems like it's going to be a challenge--no tests, just a programming problem a week.

(Just started today.)

@anorton it's not challenging, I can't wait for Coding da corgi

Or is it Coding the Matrix?

:)

me too.

Anyway... I've got to sign off. I have an early morning tomorrow...

FYI, do NOT watch the Matrix, it sucks it is terrible

@coding_corgi That's good to know... :)

'night.

@anorton Bye!

grEEtz

@AnindoGhosh y0 Yo Yo

@DavidKessner BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!!!!!!!!

@jippie Java is Poop, Pure OOP!

Boy, does it smell!

;]

good morning

hi @jippie

:) @StaceyAnne

it looks like it is winter outside, but today's forecast says 31 degrees celcius.

this is hcmc during monsoon season: accuweather.com/en/vn/ho-chi-minh-city/353981/june-weather/…

I don't even bother looking at the weather forecast, because it's always 28-32 C with rain in the afternoon

weer.nl/neerslagradar/…

radar image

first half is history, second half of the animation is forecast. That is why thy lightning flashes stop half way ;o)

Hi!

@DavidKessner ahhahahahahhahh!

I am going to get crazy!!!!!

What the hell TWR-S08DC-PT60 board?! What the hell!

It decided to start working, this morning!

I am starting to suspect my USB cable, once more it does something like this, I will take revenge!

Anyone using Atmel Studio 6?

@Sourabh Sorry..

@abdullahkahraman Question: Does your company have break-out boards for QFN16-3mm to DIP300 (not wide DIP)? Ideally this footprint, including thermal pad. I need a few of those.

@AnindoGhosh No, sorry :(

@AnindoGhosh What are you using them in? A bread-board setup?

Because they are perfect for dead-bug soldering :)

@abdullahkahraman Not exactly. A stripboard setup. Can't use a breadboard for the voltages involved (100 mV) because the noise floor overwhelms the signal level.

@AnindoGhosh That is great then. I would dead-bug it!

But dead-bugging it requires some PRO soldering skills, lol

@abdullahkahraman Dead-bug soldering of a QFN16-4mm is easy, but a QFN16-3mm is not so easy. Also, though I do have a few QFN16-3mm parts deadbug soldered to DIP, the wires themselves pick up too much noise, so I need the contacts coplanar i.e. PCB etched.

@abdullahkahraman Well, either pro soldering skills, or the nice USB microscope I use. I'm hardly pro at soldering, but I manage.

@AnindoGhosh Oh, so the wires are open to air on all surfaces makes them more noise pickers?

@abdullahkahraman Not just open to air - I get the feeling that their non-coplanar nature is the culprit... If they were coplanar (I have one little board with that footprint) then at a particular angle, the common mode noise pretty much disappears.

This guy is just putting unnecessary constraints on his question, he should be seriously relooking at his power supply design instead:

@AnindoGhosh Oh, I see.. That's why bond wires in the ICs are coplanar?

@abdullahkahraman Only for high frequency signals: At lower frequencies, the bond wire lengths are too short for coplanarity to matter, I believe.

The anti-crank guy wants simplicity in his design, yet he wants relatively non-simple functionality that others have designed "massively over-complicated" circuits for. Oh, gosh! If the world found out how simple things could be, the dedicated IC designers would have to shut shop!

I can sense a massive attack of curmudgeonliness coming upon me. Perhaps I should shave what little beard has appeared on my chin in the last few days.

@abdullahkahraman I'm looking at this product of yours: ahsaelektronik.net/alisveris/our-fab/… ... So what would it take to create a 20 to 200 Volt DC, 500 Watt, adjustable (preferably microcontroller controllable) SMPS module? Input being 220 VAC, and switching frequency being a minimum of 150 KHz. Fixed max-current limiting would be a given, I suppose.

@AnindoGhosh hahahhaha!

@AnindoGhosh Yeah, so, was it hard to come to this design idea from a dead-simple DC-DC SMPS?

@abdullahkahraman Hmm?

@AnindoGhosh lol, I mean it is a relatively hard to to accomplish.

@abdullahkahraman I'm just not getting into SMPS design, no time, so basically I want to buy something off the shelf.

@abdullahkahraman And therefore, I'd rather give the money to someone I know rather than some nameless seller in China :-)

@AnindoGhosh There are variety of power supplies available on the market, with bunch of different prices.

@AnindoGhosh Hahhaa, no, I have no experience with AC-DC converters, not yet.

@abdullahkahraman I know - and most of them are priced by how fancy the case is :-D

@AnindoGhosh lol

@AnindoGhosh We are selling MEANWELL power supplies and they are relatively quality chinese products :)

@abdullahkahraman Well, keep it in mind for when you have time - There's a market for the voltage and power range I mentioned: Basically ultrasonic lab equipment. From 100 Watts to 500 max. Probably more in the 100 Watt segment.

@abdullahkahraman Hmm, do they have any 20-200VDC, controllable, 100W+ supply?

@AnindoGhosh I will have to start designing AC-DC power supplies at some point, but before that, I have to have some experience on 100W+ DC-DC power supplies.

@AnindoGhosh Let me check

@abdullahkahraman Actually, the ideal design is to have a DC-DC adjustable buck, sourced of a regular full-bridge rectifier on the mains. Isolation happens in the DC-DC stage, not the mains stage.

@AnindoGhosh Nope.. Sorry.

@abdullahkahraman Thought not. MeanWell does sell in India.

@AnindoGhosh Over twice the voltage rail? I would easily say over thrice :)

@abdullahkahraman Thought not. MeanWell does sell in India.

@abdullahkahraman "Over twice" is a perfect subset of "Over thrice", no?

@AnindoGhosh Yeah, but it does not frighten enough :)

@abdullahkahraman Feel free to frighten more.

@AnindoGhosh I am searching this, but seems like a rare thing. Couldn't find anything suitable..

@abdullahkahraman Search OEM suppliers, not retail. There's no retail market for it.

@abdullahkahraman Industrial DC supply.

@AnindoGhosh So, with 200V output voltage, what is your output current? Or in another words do you want constant 100W+ power supply?

farnell.com/datasheets/29681.pdf

@abdullahkahraman Yes. Current can go from 500 mA to 2 Amps depending on the Langevin transducer used.

@abdullahkahraman That one is both way more powerful than is needed in labs, and way more expensive. Power supply price shoots up non-linearly with power. A 200 Watt version will often be less than one third the price of a 500 Watt one.

@abdullahkahraman What I would want most, is that it can be voltage controlled, current limited, as well as (and this is the problem part) output power controlled. See, a non-linear load with a variable reactance is problematic to control through V and I alone.

@AnindoGhosh Hmm..

@abdullahkahraman elektroautomatik.de/fileadmin/pdf/manuale/GR15/15200768.pdf <--- If price were not a factor, that's what the people I am talking to would be buying.

I have searched TDK-Lambda for OEM, but couldn't find anything..

@abdullahkahraman So, long story short: An OEM manufactured version would probably cost way way less than the EA series, since there's a huge price premium for German engineering :-)

@AnindoGhosh Yeah, I wish I could go to Germany and knew German and would be invisible and could pass through walls so I can spy on them easily.. :)

@abdullahkahraman Nahh, it's not that they have specific technology or techniques that you do not have access to. They just have the perceived "German Engineering" tag. No doubt they're meticulous and give great results, but meticulousness is achievable in any geography if the inclination and funding are there.

@AnindoGhosh Yeah, this was what I offered you, PSI 9300-15. But yes, it is expensive :)