Electrical Engineering

coding_corgi

1:45 AM

It's quite in here...

Kortuk

@hhh Surge protectors protect against voltage surges, read about what a varistor is and it will make more sense.

coding_corgi

@Kortuk Well he ordered one, so let's see if it works...

Kortuk

@TobyLawrence Nice.

@coding_corgi Bet it will. Going to celebrate a little cinco de mayo.

inkyvoyd

@Kortuk do most surge protectors use varistors? If so, that means they are resettable over time right?

coding_corgi

@Kortuk Burrito time?

inkyvoyd

1:48 AM

Or is a surge resistor another word for varistor?

Kortuk

@inkyvoyd The varistors age, I really dont know hot to calculate their lifetime, but that is my understanding. I would design one with a varistor and breaker, varistor to shunt, breaker to stop the event. I believe they are normally designed like that.

@inkyvoyd I have never heard that term, but I would assume that is what someone meant by saying surge resistor.

scratch that, I faked myself out, I went to the article and it had "pot and rheostat" and I thought I messed up, but I am correct.

inkyvoyd

Okay - so would using a varistor and breaker only have the advantage of being reusable (as opposed to a fuse)? Or could there be other reasons to use a varistor circuit?

Kortuk

@inkyvoyd the varistor is the important part. A fuse just fails if you have high current. If I buy a power strip with a fuse I need to know exactly what current I will be using. If it is slow blow small devices could easily be destroyed first.

A varistor is designed to turn on right above the input wall voltage, and by doing so it will not let voltage go higher, it will clamp the voltage down.

I am afk for a bit.

The breaker with a varistor can be replaced with a fuse and varistor for same function and reuse, with a fast blow fuse that is set for a current much higher then expected, but lower then the fail current of the varistor.

afk.

hhh

2:21 AM

I got the surge protector and so far no bangs, will get more of them still to connect all devices. My friend still recommend me to get UPS but not sure about it. For the time being, I am trying the new installation with the surge protector.

I am not sure what benefit the UPS could actually provide me (not wanting to get loud monster on the corner), this house has very little downtime in electricity providing -- zero day in past 4 years at least...

Anindo Ghosh

@hhh An UPS is being suggested in this context as a means of line conditioning, I believe, not for power continuity.

hhh

What does it mean?

...ensuring stable quality of electricity?

inkyvoyd

I thought a UPS was essentially a large battery that provided electricity for a short time in event of a power outage

coding_corgi

@jippie Yo yo yo! Guess what?! I am getting a very red blinky LED controlled by my ATtiny85!

@jippie I used the sketch from the Arduino IDE 1.0.2, then changed the baud rate to 9600!

@jippie and then I ran this command: sudo avrdude -p t85 -c arduino -P /dev/ttyACM0 -b 9600 -U flash:w:src.hex

@jippie and I am getting a blinking red LED!

@jippie Thanks for all your help and time! You really helped me! Without your help I would've never gotten anywhere! THANKS!!!!!!!!

@jippie You da best!!!

2

Anindo Ghosh

2:42 AM

Yup, @jippie is cool.

angelatlarge

@AnindoGhosh What are you doing here@GhostOfAnindoGhosh. Aren't ya supposed to be away?

coding_corgi

@angelatlarge Looks like tomorrow my top conversation with @jippie isn't going to be about some programming issues...

angelatlarge

@coding_corgi I think you hit the response button on the wrong message: you are not the @GhostOfAnindoGhosh

coding_corgi

@angelatlarge I just typed in your username....

I think it automatically just selects the latest message of the user.

angelatlarge

@coding_corgi Ah, true.

hhh

2:55 AM

@inkyvoyd Agree but "line conditioning" apparently mean that it may be able to provide some benefit @AnindoGhosh?

angelatlarge

@coding_corgi True. I am glad you guys got it resolved. Excellent. Kudos to @jippie

coding_corgi

@angelatlarge MANY kudos to @jippie!!!!

@angelatlarge Turns out I don't live in a haunted house!

angelatlarge

@coding_corgi That's not clear yet

Anindo Ghosh

3:15 AM

@angelatlarge Just visiting while I travel from place a to place b.

ManishEarth

3:33 AM

@anindo (figured this out a while back, just forgot to tell you) I figured out the source of the lost rep: the rep cap was recaclulated after the migration. And you have been earning rep on both sites, so this shoved some of your rep off the cliff.

jippie

5:46 AM

hmm ... only +8 rep overnight ...

abdullah kahraman

6:24 AM

Hi!

jippie

morning

abdullah kahraman

@CamilStaps I like that guy, EnesKuray, he is 16 and he can sort of speak English. That's good for a Turkish at that age.

@CamilStaps I also like how he is sure there is no law about using hidden cameras.

jippie

@abdullahkahraman you hit 2k(rep)!

(finally)

abdullah kahraman

@jippie There is a rep in chat, too?

jippie

nope

abdullah kahraman

6:32 AM

@jippie I have been 2k for a week now :) Thanks :)

Since April 26.

user61389

6:46 AM

@abdullahkahraman haha, yes. Don't you learn English at school? Then how have you and he learned English?

user61389

(Morning)

abdullah kahraman

@CamilStaps Morning. No, they teach it, but I don't think there is an efficient method. The quality is very low. That's why I say he is good, lol. But he did not mean English bye "only lesson and lesson, there is no talent education", and he is right about that :)

@CamilStaps See, I my English is very bad, too :)

user61389

@abdullahkahraman haha, that's a pity, any idea why the quality is low? Your English is fine, don't worry about it ;)

abdullah kahraman

@CamilStaps It is maybe because of the fact that Turkish people are very lazy, lol. We also think that we know everything. For example, a Turk can talk on every subject, every subject.

But he/she will just, talk.

user61389

Haha

jippie

6:56 AM

@abdullahkahraman does that include talking about 'talkinng on any subject'?

abdullah kahraman

@jippie Of course, no.

m

:)

/me is out

@jippie Bye

Clever guy, lol

user61389

7:17 AM

Haha genius

jippie

@CamilStaps is it still school holidays this week? (in general)

user61389

@jippie no, but most exam students are free / have facultative lessons

user61389

That's the same, for most students :P

jippie

@CamilStaps yeah, but their parents will be in the traffic jams then

I don't care about the students, I care about parents :-p

user61389

@jippie ah, yes - lol

abdullah kahraman

8:13 AM

@jippie lol

user61389

Why doesn't 5k give any fun privileges :(

abdullah kahraman

Hey, thanks whoever up-voted my questions!

user61389

9:45 AM

Woah, do EE students do anything else than transfer functions?

abdullah kahraman

10:15 AM

@CamilStaps Yeah, but mainly transfer functions :)

user61389

@abdullahkahraman nice... glad I didn't chose EE :)

abdullah kahraman

@CamilStaps ~~Damn you! Get out of this chat!~~ What did you choose?

user61389

@abdullahkahraman :P

user61389

Philosophy and informatics

user61389

I will of course continue my hobby :)

abdullah kahraman

10:22 AM

@CamilStaps I don't get the bonding between two?

user61389

@abdullahkahraman there isn't really any, except logical reasoning

abdullah kahraman

@CamilStaps It is so weird that someone likes both philosophy and electronics at the same time..

user61389

@abdullahkahraman why? Because philosophers are woolly? :)

abdullah kahraman

@CamilStaps These are two different disciplines, one is mathematical other is verbal.. These two words are not exactly what I want to tell, but you get the idea.

user61389

@abdullahkahraman yes I understand. But there are very mathematical things in philosophy, I particularly like those - it can be really exact, how odd sounds that :)

abdullah kahraman

10:33 AM

sorry ı spaek no engliş

user61389

Lol

user61389

10:48 AM

Hey @abdullahkahraman how did you do the <s>striked text</s> <strike>This doesn't work</strike> :(

abdullah kahraman

@CamilStaps It is either to be or not to be..

user61389

@abdullahkahraman you tell me therefore I will be

abdullah kahraman

@CamilStaps --- Congrats.. ---

user61389

@abdullahkahraman thanks, awesome :)

abdullah kahraman

@CamilStaps No problem.

user61389

10:54 AM

I presume it works in comments as well? Very helpful.

coding_corgi

1:33 PM

Yo yo yo!

abdullah kahraman

1:46 PM

@coding_corgi Hey!

coding_corgi

@abdullahkahraman Yo!

abdullah kahraman

@CamilStaps, @coding_corgi has created a room for AVR, I suspect..

coding_corgi

@abdullahkahraman I did, but I wish I could delete it...

user61389

@abdullahkahraman is 159 enough rep for that?

coding_corgi

@CamilStaps Yup!

user61389

2:00 PM

Okay.. well just wait and it will die slowly, peacefully and in harmony with nature.

coding_corgi

@CamilStaps Ok...

AshRj

@CamilStaps Interesting combination.

user61389

@AshRj :) keep hearing that, must be true :P

David Kessner

2:16 PM

Hi all!

abdullah kahraman

@DavidKessner Hi!

Hahahahahhahaha:

►

I don't know how I got there from quadrature encoders lol

David Kessner

@abdullahkahraman Quadrature? What are you doing with that?

abdullah kahraman

@DavidKessner There is this camera that can turn all the axis on a military kind of truck.

They have designed it but did not add encoder in it, assuming that stepper will do just fine.

Now we have to make a mod to it so that it will tell the PC inside the position.

Electronically fairly easy, but mechanically challenging, at least for me.

But this is like a joke. When me and my dad first went to these guys, who sell these cameras to the truck builder whom send trucks to police and such, I could not believe it.

This guy calls a photo-interrupter sensor as "LDR".

Things are done weirdly in Turkey..

David Kessner

@abdullahkahraman LDR = Light Dependant Resistor?

W5VO

@abdullahkahraman Light Dependent Resistor?

@DavidKessner lol

abdullah kahraman

2:31 PM

@DavidKessner @W5VO Yeah..

W5VO

I don't think a CdS sensor would give you really good "photo interrupter" performance

abdullah kahraman

@W5VO I have used them to do some "natural" filtering on a heart-pulse signal :)

abdullah kahraman

2:44 PM

How was the hangout on Saturday?

Did our "guy" keep on reading his answers loud? lol

user61389

@abdullahkahraman for me (first time), it was nice to actually see some guys

abdullah kahraman

lol

user61389

@abdullahkahraman haha, yes, some of the guys

abdullah kahraman

I wish I could stay.. I have only did one hangout and that was with old guys, like @AnindoGhosh and @jippie..

user61389

lol :P

user61389

2:48 PM

@abdullahkahraman next time better luck, hopefully

abdullah kahraman

And I accidentally muted @jippie in that hangout, and he did not want to unmute lol, what an oldie :P

user61389

@abdullahkahraman @jippie wasn't there this saturday, right?

abdullah kahraman

@CamilStaps I don't know, but I did not see him in 5 minutes that I was in the hangout.

user61389

@abdullahkahraman then what do you mean with that last message?

abdullah kahraman

@CamilStaps The other hangout (and my only hangout) that we did about a month ago, to test our cameras and such, with anindo and jippie.

user61389

2:51 PM

@abdullahkahraman ah I see, but it's every week isn't it?

abdullah kahraman

@CamilStaps You can also create a hangout now, if you want, but yeah, EE.SE is on Saturdays I guess.

user61389

@abdullahkahraman yeah I got that

user61389

lol

abdullah kahraman

lol

user61389

lol

user61389

4:03 PM

0

Q: VSWR measuring, directional coupler

I may need to measure reflected power from some PA and there are readily available SMD directional couplers to buy. However, I found only 90 deg. couplers on immediate stock and I wonder if can I measure vswr (maybe combine two?) with them. Actually I intend to use in some protective stage that s...

swr-meter

user61389

What's a PA?

cipher

0

Q: Error While trying the program my ATMega16a with extreme burner

Whenever, i want to burn the hex file on my chip, always an error message appearrs, Power On Failed Cannot communicate with target chip The programmer i am using is AVR USB programmer, from ABLab Solutions. The software i am using for program burn is extreme Burner AVR. I don't thin...

microcontroller avr atmega programmer

Simple Question. Getting on my nerves :(

Kortuk

@CamilStaps Power Amplifier.

user61389

4:23 PM

@Kortuk ah, thanks :)

angelatlarge

4:36 PM

@CamilStaps How are you with general-purpose algorithms?

@CamilStaps (And hello!)

user61389

@angelatlarge hi! What about it?

abdullah kahraman

@angelatlarge Hi

angelatlarge

Say you have an array of integers, and you want to pick a number X such that if you walk your array of integers there will be exactly two different spans on numbers such that every number in the span is larger than X.

user61389

Sorry, what's a span on numbers? A set?

angelatlarge

@CamilStaps I feel like a) there must be a general name for this class of algorithms and b) there must be well-designed algorithms to accomplish this kind of task for any arbitrary X, or any desired number of spans.

@CamilStaps In this case I mean a set of numbers in adjacent positions in the array

user61389

4:40 PM

@angelatlarge Hmm, interesting. You're in C? I don't know how it would be called / if it already exists, but perhaps I can make something up

angelatlarge

@CamilStaps No, that's not what I am asking.

user61389

@angelatlarge you only want the name?

angelatlarge

@CamilStaps I know how to write something like that in C, but what I don't know is what are the ways for processing that kind of stuff efficiently. Most people, when asked to write a sorting algorithm write a BubbleSort, not a QuickSort, you know?

@CamilStaps Name of the problem would help.

user61389

@angelatlarge I don't know, let me search for that. You can also try Mathematics

angelatlarge

@CamilStaps I wonder if there is a good graph traversal technique for that....

user61389

4:44 PM

@angelatlarge can't you just pick the minimum from the array, unless it's the first or last item?

user61389

For 5, 8, 2, 6, 4 X would be 2, because you would have 5, 8 and 6, 4. This only doesn't work for 2, 5, 8, 6, 4 because then you have only one span (and an empty span)

angelatlarge

@CamilStaps Well, what I want to do is have an algorithm take an array of numbers, and a desired number of spans, and it would return the X needed to create that number of spans from the array.

user61389

Say you want n spans. That would mean you want to:
1. pick the minimum, store it in m
2. remove the minimum from the array
3. repeat (1, 2) n-1 times
4. return m
Only watch out for boundary numbers

user61389

Where's my markdown :(

angelatlarge

@CamilStaps Array removal is not an efficient operation...

user61389

4:48 PM

@angelatlarge then just add the max of the array to the number

angelatlarge

@CamilStaps I would like to read something on this topic. Like I said, I can come up with an algorithm that works too, but I would like to know about efficient approaches for doing this kind of stuff.

user61389

@angelatlarge yeah right, sorry, I digressed. I'd ask the Mathematics guys ;)

angelatlarge

4:59 PM

@CamilStaps BTW, I am going to write an answer to your putch question sometime today. I think the best answer isn't there yet :)

user61389

@angelatlarge what question?

user61389

@angelatlarge just curious, what's the application for your algorithm?

Dave

whats up

angelatlarge

@CamilStaps putch question on Stack Overflow

@Dave Hello

user61389

1

Q: Link step can't find symbols (XC8 compiler)

I'm trying to compile and link a C program using the XC8 compiler. I changed from the C18 compiler and made some minor compatibility changes to the code. With C18, the code compiled and linked just fine. With XC8, compiling goes fine, but the link step fails with this error: Error [500] ; 0. und...

c compiler linker pic c18

user61389

5:09 PM

or

user61389

0

Q: Changing stdout (putch() function) on the fly in C

I'm using the XC8 compiler. For that, you have to define your own void putch(char data) function in order for functions like printf() to work, as is described here. Basically, putch() is the function which is used to write characters to stdout. I now want to change this function on the fly. I h...

c function pointers function-pointers stdout

user61389

?

angelatlarge

@CamilStaps The latter

user61389

@angelatlarge okay, me is curious :)

angelatlarge

@CamilStaps Like I said, there is no really good way of doing what you want, but I think I can write a better answer ;)

coding_corgi

5:13 PM

@CamilStaps What's the difference between the XC8 compiler and gcc?

user61389

@coding_corgi uhh, gcc is for CPUs, not? XC8 is for PICs

coding_corgi

@CamilStaps Oh, duh! O\-

angelatlarge

@CamilStaps Well... unless I am misunderstanding something, apparently no good algorithm can exist:

journal.r-project.org/archive/2011-2/…

It is an np-hard problem :)

@CamilStaps Though... check that. Their data is more difficult... the search continues.

Ooooo...

0

Q: Clustering of 1D signal

I've got several 1D signals, showing two or more bands. An example is shown below. I need to extract the datapoints belonging to a single band. My first simple approach was taking a moving average of the data, and get the indices where the data is larger than the average. def seperate(x): ...

python cluster-analysis scikit-learn

user61389

@angelatlarge lol :)

Anindo Ghosh

@angela That kind of problem probably falls under graph theory. Where does the classic bridge and island problem fall?

angelatlarge

5:20 PM

@AnindoGhosh Yeah, I was thinking graph traversal, but I haven't come up with exactly how to represent the data in a graph in a way that makes sense.

David Kessner

Is @jippie around?

user61389

When a transformer is rated 2x12V~ 1A, does that mean 2x0.5A or 2x1A, usually?

Dave

5:36 PM

can you guys confirm me if i can do what i want with netduino ?

coding_corgi

@Dave Like?

Dave

so I have no clue about anything electronic etc, but I have 10 years software developing, I figured netduino is the easy way to 'make something happen in real life'

the hello world/blink led project seems a bit too small,

I want to detect when someone open my house door, and do something, lets say blink a led at first, eventually, send me an email

coding_corgi

@Dave How 'bout an Arduino UNO? That's really good to start out! I am in the same situation as you, programmer at heart, but trying to be an electrical enginerr.

Dave

why not netduino, i think its the same thing but for .net dev, and...., im a .net dev :P

so can i with netduino, detect if someone open my house door, and blink a led & send me an email,

am i looking at the right tools for the job ?

coding_corgi

@Dave An Arduino is really neat and simple, look at this chip: hermann-uwe.de/files/images/attiny13.preview.jpg, it is quite small, arduino can get you to the stage of being fluent with these devices, then have something like this: sparkfun.com/products/10822, and get a photocell, or two magnets, to detect when your door opens.

@Dave you have to crawl before you walk, and walk before you run...

angelatlarge

5:45 PM

@CamilStaps So far this proved to be the most useful link:

2

Q: finding Peaks in image Histogram

I am witting a project of image processing. For some part of my project to find good threshold value I need to find peaks and valleys of image's histogram. I am witting my project in C# .net but I need Algorithm or sample code in any languages like(Java, C,C++,....) to understand the logic of th...

c# image-processing histogram

@Dave: I've never used Netduino, so I can't say much about it. Arduino's seem to be (still) quite a bit more popular, so it is easier to find code and help for the Arduino platform, IMHO.

user61389

@angelatlarge what's your application, actually?

angelatlarge

@CamilStaps Image processing :)

user61389

@angelatlarge the resistor app?

Dave

ok but....

lets say im using arduino

can i do my project

detect when my house door open and send me an email

angelatlarge

@Dave Sure. You might want to also consider Rasperry Pie for that.

@Dave For Arduino, you'd need to get an attachment so that it can be internet-enabled: these are called "shields". You'd want a WiFi shield or an Ethernet shield.

@Dave You program Arduino's in C/C++ (minus new and delete operators: everything is usually allocated on the stack, not on the heap). RPi you program in whatever you want to write Un*x programs on.

@CamilStaps Yes.

user61389

5:52 PM

@angelatlarge cool :)

angelatlarge

@CamilStaps imgur.com/TVesSVa

user61389

@angelatlarge awesome! Are you going to require a flashlight? Otherwise the colours might not get the right value..?

angelatlarge

@CamilStaps I have some ideas on that, but I am not there yet :)

jippie

-70 14 hours ago reversal Serial upvoting reversed

grmbl

user61389

@angelatlarge okay :)

angelatlarge

5:59 PM

@jippie Oh, shoot. You want me to upvote seven answers for you right now?

Kortuk

6:11 PM

@angelatlarge you know you can post that to actually be in chat?

angelatlarge

@Kortuk Yeah, I didn't want that :)

Kortuk

@angelatlarge Why?

user61389

@Kortuk damn you Kortuk! He didn't want that! ;)

abdullah kahraman

@Kortuk It looks ugly, maybe? :)

angelatlarge

@Kortuk I don't want to talk about it too much :)

user61389

6:12 PM

It's a sectet project.

angelatlarge

@CamilStaps Yeah, so very secret

So secret, I can't spell it.

Kortuk

... ?

Want me to delete that upload?

Just so you know, you are all nutters.

3

user61389

@Kortuk ? Google Translate translates "nutter" as someone who gathers nuts :)

user61389

(Just ignore me, I'm only annoying today)

Kortuk

@CamilStaps onlineslangdictionary.com/meaning-definition-of/nutter

user61389

6:15 PM

@Kortuk yeah I did know that (see what I mean?)

Kortuk

@CamilStaps "crazy person" British English I believe.

@CamilStaps Figured everyone would know that from a higher % british english here.

user61389

@Kortuk We get British English in school, guess other foreigners as well

Kortuk

@CamilStaps Generally all of Europe does British English, makes sense being its homeland. In school in Texas we get Castillian Spanish, even though Mexican Spanish would be more useful.

angelatlarge

@Kortuk Whatever. Doesn't matter.

Kortuk

@angelatlarge I mean honestly, did you really mean to keep it secret?

user61389

6:20 PM

@Kortuk I like British English better (no offense), but I'm afraid that my English more sounds like American (or just crap), having talked / listened to American people a lot. Many students talk more like Americans, due to all TV shows and so, but still we have to learn British English..

Kortuk

@CamilStaps I dont think either is better, just different.

user61389

Of course neither really is better.

abdullah kahraman

@Kortuk Yeah, tell me that, we learn British English, yeah. All of my friends double triple pronounce the "g" in the end of every word, like they are stuck with it. "goinGGGG", "cominGGGG"

I sometimes think they feel like they have to pronounce the G in the -ing, coz it is i, n and GGGG!

Kortuk

@abdullahkahraman I like to make my accent worse for our meetups and such. But I generally like saying things colloquially.

it entertains me.

jippie

6:40 PM

@CamilStaps only today?

@Kortuk I need to learn practical spanish within the next 5 months

user61389

@jippie today: only annoying; other days I'll leave open for you ;)

jippie

@CamilStaps you are my mentor on that

user61389

@jippie what do you mean?

Kortuk

@jippie Speaking at least 2 languages fluently already will probably help.

jippie

@DavidKessner whazzup?

@Kortuk don't forget visserslatijn

and of course I can understand Flemmish pretty well

David Kessner

6:50 PM

@jippie I don't think that a 555 can be used for a delay... But maybe I am missing something.

abdullah kahraman

@jippie Trip to Spain?

@jippie And don't forget you are old

jippie

@DavidKessner when I answered the question, there were no details on the exact implementation. So It was just guessing.

abdullah kahraman

Ouch, wrong time, I am one of the youngest here, @CamilStaps back me up!

Kortuk

@DavidKessner What kind of delay, I can use it to delay a rising edge by a set amount of time.

jippie

@abdullahkahraman Chile

Kortuk

6:51 PM

@jippie Nice!

abdullah kahraman

@jippie Not for work, right?

user61389

@jippie nice, for work?

jippie

@Kortuk well ... maybe. I have a business class flight (if I want); I have people to stay with ...

@CamilStaps for christmas.

Kortuk

@jippie Sounds fun!.

David Kessner

@Kortuk It sounded like the OP wanted to delay a pulse by some number of milliseconds. But @jippie is right in that the OP left out a lot of details.

Kortuk

6:53 PM

@DavidKessner You can do that with a 555, at least I believe I could get a schematic for it.

David Kessner

0

Q: Add a Tunable delay to a TTL pulse?

How can you add a tunable delay to a TTL pulse? My understanding is that this is the job of a PPL. I am not sure if a digital PLL delays a square wave or if it can also delay a single rising edge (which is desired). I am hoping to tune the delay from 0ms to 10ms with accuracy in the microsecond...

ttl pll

jippie

@DavidKessner yes, go back, leave a short comment and upvote me :-p

Kortuk

@DavidKessner RC circuit and a schmitt trigger could also.

user61389

@jippie nice :)

David Kessner

@Kortuk I guess it depends on how long the pulse is, and how the OP wants it delayed. The post says that just delaying the rising edge is OK, but no mention of how long the pulse is or anything like that.

jippie

7:01 PM

@DavidKessner Maybe it is slow enough to get it working with a high school dropout and a push button.

David Kessner

@jippie Are you volunteering? <jk>

jippie

@DavidKessner my hands are probably too shaky, that is why I dropped out in the first place.

Kortuk

7:29 PM

@DavidKessner good point.

coding_corgi

@Dave Yes, but if your looking for size you should use the ATtiny, Atmel products are great, if your a programmer and are in the neigborhood of C, C++ and Java you should have no problem.

@jippie Yo!

@Dave Here is some stuff to get you started: hlt.media.mit.edu/?p=1695, youtube.com/watch?v=30rPt802n1k, youtube.com/watch?v=_ZL-YNOH_jA - that's for programming an ATtiny with Arduino

@Dave some products to get you started: sparkfun.com/products/11226, sparkfun.com/products/10822, sparkfun.com/products/9378,

@Dave get a bunch of stuff, learn about the basics and have some fun!

@Dave Hide a photocell on the side of your door frame or a flex sensor, a magnet or something to detect if your door is opened and send you an email or text,

jippie

7:44 PM

@coding_corgi Mr. AVR

coding_corgi

@jippie I am getting a blinking LED, thanks to you!

jippie

:)

good to ~~hear~~ read

coding_corgi

@jippie the isp xample from 1.0.3 did not work but 1.0.2 worked!

@jippie Let's hope this programmer works, I am going to get it: sparkfun.com/products/9825

jippie

oh why are you changing a winning team?

coding_corgi

@jippie can I connect the MISO, MOSI, SCK, RESET, VCC, GND pins to an ATmega328 - PU and upload a hex file to it with the arduino?

jippie

7:51 PM

s tested extensively on a Windows desktop.

coding_corgi

@jippie I am always up for a challenge!

jippie

are you sure it has Linux driver too?

@coding_corgi sure why not.

coding_corgi

@jippie Not sure, at least it's not an AVRISP MKII!

@jippie Ok,

David Kessner

►

coding_corgi

@jippie thank for all your help!

David Kessner

7:53 PM

I was doing sound for that event. Fairly cool.

coding_corgi

@jippie Now I can finally start programming!

@jippie I made a program that would upload the HEX file for me,

abdullah kahraman

@DavidKessner Are you in that video?

David Kessner

@abdullahkahraman Nope. I was using some super secret, not yet announced, prototypes and the camera man was under strict instructions not to photograph the equipment I was using. And since I was standing in front of the equipment...

abdullah kahraman

@DavidKessner Yeah, yeah, secret. I have seen it, it is a music thing that you control with your hand.

David Kessner

@abdullahkahraman Head. Control with your head. It reads your thoughts. With @jippie all it does is turn up the cowbell.

abdullah kahraman

8:01 PM

@DavidKessner loool

@jippie Still here?

spaarzaam

@jippie wth is that?

@jippie That is a terrible superhero tag line!

jippie

8:17 PM

@DavidKessner ?

David Kessner

@jippie Tag line-- what a super hero always says. There's another word for the same thing that I can't remember. Like when Superman says, "Up, up and away!".

jippie

to infinity and beyond?

@DavidKessner but I'm no superhero! I'm your subaverage mortal.

David Kessner

@jippie Catch Phrase is the term I was thinking of.

@jippie And we can tell that from your catch phrase of, "spaarzaam".

coding_corgi

@jippie Look at the program I made: pastebin.com/uM9pkicX, follow the directions!

@jippie It does everything automatically for you so that you don't have to type in commands to program your AVR!

user61389

@jippie do you know how to test if an audio device works on ubuntu server?

coding_corgi

8:27 PM

@CamilStaps Me made a Jawa program yesterday!!! pastebin.com/uM9pkicX

user61389

(I think I blew the device :))

The Photon

@jippie Shazaam! (not Cheapskate!)

coding_corgi

@CamilStaps Your embedded PIC server?

user61389

@coding_corgi what does it do?

The Photon

@jippie There's a funny Icelandic(?) movie about a young guy who wants to be a magician, and his magic word is "Chimay!"

user61389

8:30 PM

@coding_corgi nono, that can't run ubuntu :P no, a GENE-9455, very nice small motherboard

The Photon

Only he says "Sheeeeemay!"

user61389

That small that they don't use normal connectors. I had to solder the IDE cable myself, and there isn't an audio connector, you have to solder that as well :)

user61389

The black connector on the bottom left of the image on that page is the audio connector

abdullah kahraman

@DavidKessner Really? They killed it with the dubbing then when I watched it as a kid..

coding_corgi

@CamilStaps Whoah!

Das tiny...

user61389

8:32 PM

@coding_corgi me likes tiny, but first requirement is that it works, and if I can't solder it without blewing it up, I'd prefer big :)

jippie

@coding_corgi you created a java makefile alternative :o) cool!

@CamilStaps done that, yes

@CamilStaps the most annoying catch is that you have to remember to unmute the sound.

user61389

@jippie is it something you can explain in short / do you have a link where it's explained? I couldn't find anything

jippie

@ThePhoton the beer?

@ThePhoton oooooooooo.

@CamilStaps you have to ask tomorrow or so. Until then you can check the command line tool alsamixer, you need that to unmute

user61389

@jippie okay, will see tomorrow, have to go now anyway, thanks in advance

user61389

Bye all!

jippie

8:38 PM

alsamixer

user61389

@jippie will look into that, thanks!

jippie

how will alsamixer do as a catchphrase? @DavidKessner

The Photon

@jippie "Alsamixer!" ???

jippie

@ThePhoton is magnetic flux not a capital phi instead of the phi you wrote?

8

A: Inductor equivalent of capacitor's charge

Magnetic flux is the complement of charge. Just as a capacitor is defined by the relationship \$Q = CV\$, an inductor is defined by the relationship \$\varphi=LI\$, where \$\varphi\$ is the magnetic flux. Just as the capacitor formula becomes \$I = \dfrac{dQ}{dt} = C\dfrac{dV}{dt}\$ when we l...

\varPhi

David Kessner

@jippie "alsamixer" sounds like something you say when you stub your toe.

coding_corgi

8:48 PM

@jippie Try it out @jippie

jippie

@coding_corgi @jippie is going to bed. @jippie will leave the browser tab open. @jippie will take a look at it tomorrow

The Photon

@jippie I remember seeing it as \varphi when you're talking about time-varying values. Unfortunately I don't still have my network theory textbook so I can't go back and see what's the distinction.

coding_corgi

@jippie Ok! Tell me if you like it! Just bookmark and open it up later,

jippie

@ThePhoton I checked my memory against wikipedia, but now you mention time-varying and I'm just not sure enough. That is also why I didn't leave it as a comment.

coding_corgi

@jippie make sure you have OpenJDK6 or 7

abdullah kahraman

8:54 PM

Ah, The Big Bang Theory killed me again.

jippie

@coding_corgi ah yes we were discussing the java version drama at the office last week.

coding_corgi

@jippie ok

jippie

/me is out

enjoy!