Electrical Engineering

angelatlarge

12:11 AM

@coding_corgi Not exactly, because you are still going from +5 to 0, whereas real AC would go from +5 to -5.

@coding_corgi If you pick a +2.5 reference, then yes, that would be closer to +2.5 -2.5 AC.

@coding_corgi However, real AC is sinusoidal waves, whereas you'd be generating square waves.

coding_corgi

@angelatlarge Oh, okay! Thanks for the explanation and your time!

@angelatlarge By the way, what PCB service do you use, I am thinking about getting a PCB thingy for a breakout board for my camera.

angelatlarge

@coding_corgi I usually make my own.

@coding_corgi I'd probably use OHS park if I needed one made professionally.

coding_corgi

@angelatlarge Okay,yeah, I have them booked marked, now I just have to make an Eagle CAD

angelatlarge

@coding_corgi Do you know EAGLE already?

coding_corgi

@angelatlarge You mean the GUI or...

angelatlarge

12:17 AM

@coding_corgi Have you used it before?

coding_corgi

@angelatlarge No

But I have it on my computer

angelatlarge

@coding_corgi Right. Here's my advice: think carefully before using it. Learning a CAD program takes quite a bit of time, and unless you have access to professional version of EAGLE, your board size will be limited by the trial version. I thought: "oh, whatever, 4"x3", I'll never need anything bigger", but that's false. And then I had to spend all that time learning a different CAD package. In the ideal case, you only learn a CAD package once.

coding_corgi

@angelatlarge I have Eagle what do you mean by free triAl?

angelatlarge

@coding_corgi Check which version of EAGLE you have, and what its limitations are.

coding_corgi

@angelatlarge 5.12.0 LIGHT

angelatlarge

12:26 AM

@coding_corgi Check what its limitations are.

coding_corgi

@angelatlarge How? Google?

angelatlarge

@coding_corgi Eagle website.

@coding_corgi Google will get you there too.

coding_corgi

@angelatlarge Okay...

Found it..

Limitaions:

`Limitations
The following limitations apply to the EAGLE Light Edition in general:
The useable board area is limited to 100 x 80 mm (4 x 3.2 inches).
Only two signal layers can be used (Top and Bottom).
The schematic editor can only create one sheet.
Apart from these three limitations the EAGLE Light Edition can do anything the Professional Edition can do. You can even load, view and print drawings that exceed these limits!
The Freeware version of EAGLE Light adds these limitations:
Support is only available via email or through our forum (no fax or phone support).

angelatlarge

@coding_corgi Right.

coding_corgi

@angelatlarge so?

angelatlarge

12:36 AM

@coding_corgi So?

What does "The useable board area is limited to 100 x 80 mm (4 x 3.2 inches). " mean to you?

coding_corgi

@angelatlarge Nothing really

angelatlarge

@coding_corgi Really? It means that you cannot draw boards larger than... wait for it.... 4 x 3.2 inches.

coding_corgi

@angelatlarge Ok, so what's your suggestion?

Break the suspense

angelatlarge

@coding_corgi My suggestion is to think about whether you want to invest significant time into learning a CAD package that limits you to 4x3 inch boards unless you pay hundreds of dollars. That's all.

coding_corgi

@angelatlarge So no alternative?

angelatlarge

12:40 AM

@coding_corgi What do you mean?

coding_corgi

@angelatlarge Nevermind

@angelatlarge Thanks for your time see ya later!

angelatlarge

@coding_corgi See ya!

coding_corgi

2:02 AM

It's quiet in here...

MLM

@coding_corgi what ya working on?

I'm uninstalling Xilinx since it is crashing and platform studio is giving me licensing troubles...

coding_corgi

@MLM A Jawa program, should be working on C++ though,

MLM

@coding_corgi Jawa or java?

lol

coding_corgi

@MLM Wait there's a difference?! ;)

@MLM Xilinx or Linux?

MLM

Im actually doing some java review work as well

coding_corgi

2:13 AM

Which one did you get (version of linux)?

MLM

for ap test

coding_corgi

@MLM Making a program called VidCompil will make a folder of images into a video

MLM

@coding_corgi Xilinx is a tool I use to code VHDL and stuff for FPGA's

coding_corgi

@MLM Oh, ok

@MLM Do you have Linux

MLM

@coding_corgi nope

windows 8

coding_corgi

2:14 AM

@MLM Try Ubuntu out, it is really awesome

MLM

@coding_corgi nahh, my bro had it and he had too many driver issues

couldnt properly install graphics card drivers on the latest version he had

coding_corgi

@MLM Oh really? That has to a PITA

MLM

@coding_corgi not sure on details

coding_corgi

Networking is da best!

@MLM So what coffee program are you working on?

MLM

@coding_corgi uhh, are you even talking sense?

o java

that took a while

coding_corgi

2:18 AM

@MLM Not close to sense, maybe Kinglon, but no sense

MLM

@coding_corgi just going through some sample multiple choice questions

coding_corgi

@MLM Oh something like what's wrong with the code some idiot made?

I hate those

MLM

@coding_corgi ye, ap test is dumb because it is writing

instead of having a nice compiler

ide

coding_corgi

@MLM Why isn't like that, it's not like people are going to have fun drawing curly braces and semi colons, at least a text editor you know?

MLM

@coding_corgi ye, luckily they are pretty lenient if you forgot semi-colons and other caveats

coding_corgi

2:22 AM

@MLM Really, good news for me!

W5VO

2:39 AM

@Kortuk I just got to go to the Fayetteville Foam Fest (beer festival)

^_^

W5VO

2:52 AM

There were about half a dozen Arkansan breweries - several were very good. I feel comfortable putting together a 6-pack variety pack of beers made within 30 miles of my house

The Photon

3:21 AM

@W5VO Name some names

AshRj

@Kortuk What did he do ?

The Photon

@AshRj Look in the dictionary under "relentless troll".

inkyvoyd

4:00 AM

Hey, just how much electronics info is in The Art of Electronics?

i.e. if I read and understood the book would I be able to aptly design most passive and active circuits?

angelatlarge

@rawbrawb I want to make sure you saw this. And then I'll delete it, because it is SPAM, really: electronics.stackexchange.com/questions/68146/…

Anindo Ghosh

4:38 AM

@angelatlarge It's not spam, it's just a joke, leave it there :-) Everyone can do with some humor occasionally - unless one is Sith.

angelatlarge

4:48 AM

@AnindoGhosh You think? People are not into humor here, I think. The reaction to tantalum resistors was...mmm.... way to serious.

@AnindoGhosh Wanna help debug an Arduino problem for no repz?

@AnindoGhosh I am chatting with the OP of this in another room.

0

Q: TinyGPS library doesn't update GPS data when using Arduino ADC

I have a problem where I am using TinyGPS library to get NMEA data from a GPS, while also sampling the ADC at the same time. The problem is that it reads the ADC fine, but it seems to execute the GPS data once, and then the value never changes again. So it will have one value and will never chang...

@AnindoGhosh Feel free to join. Or not to join.

The Photon

@inkyvoyd There's a lot of the basics there. The digital logic portion is probably grossly out of date though.

Anindo Ghosh

5:06 AM

@angelatlarge Cannot. Packing for my travel.

angelatlarge

@AnindoGhosh It was totally optional. I figured you didn't want to pull a @jippie

Anindo Ghosh

@angelatlarge would if I could

W5VO

5:21 AM

@ThePhoton I really enjoyed saddlebock.com - their Arkansas Farmhouse Ale is sorta like a Saison, but I liked it (I don't normally like saisons). There were also a couple of porters from Tanglewood Branch and Core Brewing that were interesting

so many new breweries in the area - most are only a few years old

The Photon

@W5VO Nice, that looks like a real "micro"

jippie

5:47 AM

good morning @all

What happened on monday Feb 11 2013 @AnindoGhosh?

angelatlarge

@jippie Already? What about sleep?

jippie

electronics.stackexchange.com/users/14004/…

angelatlarge

@jippie And "hello!"

jippie

@angelatlarge sleep is overrated

@angelatlarge Think I'll dive back in bed in couple hours

angelatlarge

@jippie "Serial upvoting reversed"

@jippie Where is your housemate?

jippie

5:52 AM

?

@CamilStaps is still asleep

angelatlarge

@jippie I know it is hard before kwofee, but you really need to learn to use those reply arrows.

@jippie Yes, that's who I was asking about

@jippie I had my own @coding_corgi moment just a few moments ago

jippie

angelatlarge

@jippie Did you draw that? Nice!

jippie

We have a saying in Dutch "Vrijheid geef je door". It is about being free, being liberated from the Germans after the world war. It says "Pass it on". That @angelatlarge is the symbol that goes with it. And I am passing to you guys :o)

Today is the day that Netherland celebrates its freedom / liberation.

angelatlarge

@jippie From @coding_corgi?

W5VO

6:03 AM

@jippie a bit early?

I thought it was May 7th/8th?

jippie

early? may 5th

angelatlarge

@W5VO Well, the capitulations to Russians was May 9th.

user61389

Good morning!

angelatlarge

@CamilStaps What took you so long? Your flatmate has been here for minutes!

user61389

@Kortuk yes I thought so, thanks for the explanation

user61389

6:05 AM

@angelatlarge yes, yes you're funny

user61389

Any fun question I have to see?

angelatlarge

@CamilStaps I got a badge to prove it!

W5VO

@angelatlarge ahh, it's celebrated on the 5th.... completely different from Cinco de Mayo :)

user61389

@angelatlarge which one?

angelatlarge

@CamilStaps Shuuuure. Anindo has a nemesis now. Also from your neck of the woods :)

@CamilStaps Blabbermouth it is called, I think.

user61389

6:07 AM

@angelatlarge haha

angelatlarge

@CamilStaps Or maybe verbal_diarrhea? I don't remember

@W5VO No that's the Americans capitulating to our consumerism, methinks.

jippie

I'm going to make myself some coffee. Back in a little while

user61389

Me too please

angelatlarge

@jippie kwoffee

@jippie Bring some for @CamilStaps

@jippie Two sugars, no cream, please.

W5VO

@angelatlarge methinks you don't know who celebrates Cinco de Mayo :)

angelatlarge

6:09 AM

@W5VO Not any Mexicans I know :)

@W5VO Mainly Corona. Which has finally been allowed to be bought by Budweiser.

Which is a shame. Not because I drank either one, but because Corona basically served to hold the floor on piss-cheap beer prices.

@jippie Do you [ee.se]-stalk @AnindoGhosh after waking up in the mornings?

user61389

Nice drawing:

user61389

0

Q: Is this arduino motor driving circuit correct?

I got an Arduino Pro Micro and some parts to play with. I want to control a little 5v motor from an external power supply by using the Arduino to trigger a transistor. Like this: Is that at all correct? Will it work? I want to experiment but I don't want to break my new toy in the process. Th...

arduino transistors dc-motor

angelatlarge

@CamilStaps Gotta give the OP credit, they tried hard. Which is more than one can say for many other posters.

user61389

@angelatlarge true, but it's funny :)

user61389

Ah it's better than the fritzing stuff

angelatlarge

6:16 AM

+1 one on both counts

BTW, did you see the new emoticon @coding_corgi came up with?

7 hours ago, by coding_corgi

@angelatlarge Hmmm... O\- ?

user61389

@angelatlarge yeah, what is it?

angelatlarge

@CamilStaps Facepalm

user61389

Okay :P

angelatlarge

google.com/search?q=facepalm&site=imghp&tbm=isch

jippie

@angelatlarge apparantly not, if it takes me 3 months to notice the rep mutation

angelatlarge

6:19 AM

@jippie It may have happened yesterday, but credited to that day for some reason.

@jippie 600 rep is nothing to scoff at.

@jippie Though didn't you clean up yesterday on over 100?

user61389

@angelatlarge yes I know what a facepalm is

angelatlarge

@CamilStaps Well, now you know better.

@CamilStaps And now you know how not to do it:

Adn @jippie will appreciate the lolcats meme

user61389

Hey btw, your (@angelatlarge) circuitlab hack: you can also do it with a dot and very small font, then nobody sees it :)

Anindo Ghosh

@jippie Someone did a bulk upvote of my answers, which then got reversed.

rawbrawb

@angelatlarge I see it now, ... You have to leave it, you can't edit or delete comments after a small fixed time. But it's OK, others are guilty of worse.

user61389

6:22 AM

Disadvantage: you won't find the dot back

jippie

@angelatlarge I can has cheezburger?

angelatlarge

@CamilStaps Cool. I never figured out how to change font size in there

@rawbrawb You can delete any time

jippie

@AnindoGhosh are yo still depressed about the reversal?

angelatlarge

@rawbrawb Editing isn't allowed after 5mins, but deletion are fine

@CamilStaps Man, someone is coming for my 2K now! Damn you!

user61389

@angelatlarge just double click on the text element

Anindo Ghosh

6:23 AM

@jippie Huh? No, it wasn't my rep being reversed, it was spam rep.

angelatlarge

@CamilStaps That's the worst of both worlds.

@AnindoGhosh Huh?

Anindo Ghosh

@jippie As you'll notice from the rep trend ongoing before / after

angelatlarge

@jippie Angelalarge can want haz cheezburger. Angelatlarge no haz cheezburger.

user61389

@angelatlarge who? What?

jippie

@AnindoGhosh nope, didn't really notice. I just notice the red dot

angelatlarge

6:24 AM

@CamilStaps You remember how you couldn't stand the suspence of me being near 2K?

user61389

@angelatlarge yep, what's up with that?

Anindo Ghosh

@jippie I had another red dot a couple of days ago as well.

user61389

Quick question, for a DC motor you should use a flyback diode, right?

angelatlarge

@CamilStaps Yes

@CamilStaps I guess FET drivers may not need it.

@CamilStaps But that one is a BJT

Anindo Ghosh

@jippie 24 Apr

angelatlarge

6:26 AM

@CamilStaps So yes, mr Free Beer

@CamilStaps Isn't that what happened to @AnindoGhosh?

Anindo Ghosh

@angelatlarge FETs too. V.sd absmax, body diode boom!

user61389

@angelatlarge sorry, can't follow you. It's too early, I guess

angelatlarge

@AnindoGhosh That's what I thought, but one Andy Aka's answers seemed to imply that no.

@AnindoGhosh Should I dig it up?

Anindo Ghosh

@angelatlarge Please elucidate

angelatlarge

@AnindoGhosh OK, linky-link coming right up. You want that with schlag and a cherry?

jippie

6:28 AM

m

Anindo Ghosh

@angelatlarge What happened to me?

angelatlarge

0

Q: Turning water pump on/off using Arduino Uno R3

I'm trying to build a simple system to turn a water pump every 24 hours for 10-20 seconds. I have 5V pump. When I connect it to 5V, GND it works but when I connect it to pin 12 (or any other digital pin) and GND it does not work. Here's my sample sketch: int led = 12; void setup() { ...

arduino

@AnindoGhosh -600+ rep

@AnindoGhosh Andy Aka's circuit had a FET and no snubber.

Anindo Ghosh

@angelatlarge That's merely 60 spam upvotes. About 4 days of normal rep I guess

angelatlarge

@AnindoGhosh Wait, I don't get it. SPAM upvotes are what?

Anindo Ghosh

@angelatlarge Want me to mess with your rep? I just go upvote a lot of your answers over a week. You feel happy. Then the reversal hits. You feel sad.

@angelatlarge Spam, not SPAM. :-)

bye gotta go for my flight

angelatlarge

6:34 AM

@AnindoGhosh Have fun!

@AnindoGhosh We'll miss ya!

@CamilStaps I think there is an echo in here.

Anindo Ghosh

Bleh, 19.8k rep is a terrible time to be traveling :-D

angelatlarge

@CamilStaps The two answers are exact duplicates of the answers I posted above.

@AnindoGhosh It will not go anywhere.

jippie

logging in on chat after a reboot is 'interresting' to say the least ...

angelatlarge

@jippie By "reboot" do you mean "some coffee"?

user61389

@angelatlarge heh, lol

jippie

6:41 AM

Think I'm going to try upgrade to ubuntu 13.04 today.

angelatlarge

@jippie Tell me how it goes.

jippie

@angelatlarge OK, first I unmount all filesystems with user data, just in case

@angelatlarge then I run all pending patches for my current 12.10, to make minimize the gap: for a in update upgrade dist-upgrade autoremove; do apt-get -y $a; done

angelatlarge

@jippie I am more interested in the results.

@jippie Being a cautious kind of atlarge I fear the bleeding edge

jippie

@angelatlarge oh.

user61389

7:01 AM

user61389

Whoo :)

angelatlarge

Nice!

user61389

@angelatlarge thanks :)

jippie

chat.stackexchange.com/transcript/message/9275009#9275009 and not get reversed for a month.

user61389

7:54 AM

@angelatlarge feel like free beer?

angelatlarge

@CamilStaps Real beer, yes. Dying for one actually.

user61389

@angelatlarge sorry, I only have virtual beer

angelatlarge

@CamilStaps That question is NOT free beer.

@CamilStaps You know, every question isn't free beer.

user61389

@angelatlarge isn't it basic C?

angelatlarge

@CamilStaps No. And the reason is that someone else is calling this function.

user61389

7:59 AM

@angelatlarge ah yes that might be a problem

user61389

But I did draw your attention :D

angelatlarge

@CamilStaps Yes, you can pass function pointers around, but not to things that expect functions, rather than function pointers

@CamilStaps Your function is statically linked to.

user61389

The fp call can also be written as 'int x = fp(12);' to increase readability. — Rev1.0 Jan 25 at 9:16

user61389

So I thought... :)

angelatlarge

This means that the best you can do (unless you do self modifying code) is a goto inside your putch() or a thunk to another function.

user61389

8:01 AM

@angelatlarge so this will absolutely not work?

angelatlarge

@CamilStaps That is true in that case. That's because there isn't some library function (like printf()) that looks for a function by its name, i.e. gets linked to a function with a particular name.

@CamilStaps Correct.

user61389

Hmm okay. And there is no other/faster/better-practice way than a goto?

angelatlarge

@CamilStaps You can do a goto or another function call. If you make another function call in your putch() , there you can use triple indirection, if you'd like.

user61389

@angelatlarge what's triple indirection?

angelatlarge

@CamilStaps goto will be fastest. Thunking (calling a function via function pointer) will be slightly slower, but better code.

@CamilStaps I was making up ridiculous sh*t. If you had a pointer to a pointer to a pointer to a function, dereferenced that three times to call the function.

user61389

8:04 AM

@angelatlarge well then I think you solved the question, not? :)

angelatlarge

@CamilStaps You can replace "triple" there with "double", "single", "quintuple"

@CamilStaps Yes, but I'd rather work on my android program than write it up :)

user61389

@angelatlarge okay, but thanks!

angelatlarge

@CamilStaps And, hey, maybe I'll be proven wrong, but on this one I'd be surprised. Very surprised. Eat my hat kind of surprised.

user61389

@angelatlarge we'll see :)

angelatlarge

@CamilStaps I am not holding my breath :)

user61389

8:07 AM

It probably won't even compile. — Basile Starynkevitch 2 mins ago

user61389

:)

angelatlarge

@CamilStaps #define means you can't change it at runtime

@CamilStaps All the rep I should have had... sigh...

@We'll consider this the work I put in for the rep you SPAMed me with to get to 2k :)

user61389

@angelatlarge lol

angelatlarge

9:07 AM

@jippie Aren't fan tach signals open collector, expecting 12V?

user61389

I worked on a switched mode power supply (is that the correct term?) from an LCD TV, and heard a tick and a high buzz for a quarter of a sec or so, I think it came from one of the transformers. Anyone an idea what that might be?

jippie

@angelatlarge so? Check the datasheet for that ;o)

@CamilStaps SMPS = switched mode power supply, yes.

user61389

@jippie okay :)

jippie

@CamilStaps one single tick?

angelatlarge

@jippie It's not going to be "just a uC", unless your uC runs on 12V

jippie

9:13 AM

@angelatlarge nothing a output transistor can't fix, but why are you telling me that?

user61389

@jippie yes and then the buzz. I always heard a tick when enabling the device, it was similar to that one, but now I didn't enable the device, I messed with my multimeter and perhaps connected something

angelatlarge

@jippie I am trying to indirectly improve your answer and get you mongo bozo rep

@jippie I'd like to see a schematic for a diode that fixes that.

jippie

@angelatlarge what answer?

user61389

@angelatlarge only the diode?

user61389

angelatlarge

9:14 AM

electronics.stackexchange.com/a/68200/19941

jippie

@angelatlarge don't know what you are typing about

angelatlarge

@CamilStaps You might have to use @AnindoGhosh's sad diode

user61389

:)

angelatlarge

@jippie Wait, WTF? Your answer is gone and now there are TWO by Michael Karas?

I feel like I am in [twilightzone.se]

user61389

@angelatlarge no more beer for you

angelatlarge

9:16 AM

@CamilStaps Didn't get any.

Time for bed.

Goodnight all.

user61389

@angelatlarge good night!

jippie

nigt @angelatlarge

jippie

9:31 AM

1

Q: Voltage regulator too hot to touch

I'm working on an RGB LED project. I'm using this as the power supply: https://www.sparkfun.com/products/114 It uses an LM317 which according to the data sheet can supply up to 1.5A. The LED's I'm using are these: http://www.adafruit.com/products/314 And the mains power supply I'm using is a 12v...

power-supply voltage-regulator rgb heat-protection

Funny how @AnindoGhosh' answer is the only one that didn't get a downvote

/me frowns

;o)

jippie

11:08 AM

0

Q: Will a 40W incandescent AC bulb operate on a 330V DC voltage?

Will a 40W incandescent AC bulb operate on a 330V DC voltage or not?

power ac dc

what is a VSR? (voltage source rectifier) Is it different from a Graetz diode bridge?

jippie

11:49 AM

@angelatlarge seems to work without any problems here

The Photon

2:13 PM

@jippie Should have just been closed as a duplicate...

coding_corgi

2:27 PM

Yo yo yo!

@jippie You still here?

coding_corgi

2:52 PM

it's quite in here...

jippie

yeah that happens on a sunday afternoon.

user61389

Nice answer @ThePhoton, thanks :)

The Photon

@CamilStaps, on your SO question, the typical use case would be to choose between different peripherals to output to...How many peripherals does your system have? That limits how big a switch/case statement you'd need.

coding_corgi

@jippie Hey, could you tell me what I should do next? How could my computer and ATtiny just stop communicating?

jippie

@coding_corgi check the wires? reboot? did it work before?

coding_corgi

2:59 PM

@jippie It never worked, do I need a crystal?

user61389

@ThePhoton yes indeed, I'm using a PIC18F4620 for this, I guess that's SPI/I2C/EUSART, additionally an LCD or so. That would be the typical use case, but not my use case :) One of my putchs is serial, the other is that I want to store all the data to stdout in a buffer, then write it over ethernet.

The Photon

@CamilStaps Hey, my first +1 on SO.

user61389

@ThePhoton your first post on SO!

The Photon

@CamilStaps OK, so still only two choices...Worrying about the switch statement grows so large you need long ints for the selector variable is premature optimization.

And you're still basically talking about selecting between peripherals: serial or ethernet.

user61389

@ThePhoton yes, I only thought up there should be something else than an if..else because there should be a solution for more stdouts as well, not that I'm going to use it

user61389

3:03 PM

@ThePhoton that's correct (would there be a useful stdout possible not talking to a peripheral?)

The Photon

@CamilStaps Shoving it in a buffer so you can see it in debugger? But still, the number of choices you're going to need is limitted. 16 would be an awful lot of choices...

user61389

@ThePhoton yes but that's what I'm doing here as well. I'm building a large buffer, then in the end write the whole buffer to the ethernet chip - or isn't that what you mean?

The Photon

Or an option that just throws the output away instead of outputting it anywhere.

user61389

Good one

The Photon

@CamilStaps I was thinking of cases where you don't actually have any peripherals, but you want to use printf() for debugging, so you just fill a buffer and look at it in the debugger.

user61389

3:06 PM

@ThePhoton I understand that, but that's basically the same - except you wouldn't do anything with the buffer - isn't it?

user61389

Just to make sure I understand you correctly

The Photon

@CamilStaps Yep

user61389

Okay :) thanks for this!

jippie

@coding_corgi unlikely.

coding_corgi

@jippie So just wires to my arduino + VCC and GND, and resistors?

jippie

3:10 PM

@coding_corgi that is how I do it

coding_corgi

@jippie Do you put a capacitor between RESET and GND?

jippie

@coding_corgi do you have a multimeter?

coding_corgi

@jippie Yes, two

jippie

I currently have a 120 ohm resistor to +5V. Different solution for the same issue. If the cap or the resistor doesn't work as designed, avrdude will report a 'wrong device ID' error

coding_corgi

@jippie Ok, so that doesn't matter?

@jippie Maybe I have MISO and MOSI mixed up, would it hurt my AVR if I switchwed them and that wasn't the problem?

jippie

3:19 PM

No, that wouldn't hurt as you have the series resistors.

@coding_corgi Check the power supply voltages, check if they change when you start programming.

coding_corgi

@jippie Ok,

So when idle, the Arduino supplies about 5.4 volts,

jippie

That much?

Measure on the controller pins. What happens when you start programming, does it show a dip?

coding_corgi

And when programming, it is the same, sadly...

That would've been a really good solution

@jippie Controller pins? MISO and MOSI? VCC and GND?

jippie

You can't really measure MISO and MOSI.

Measure between pin 4 and 8 of the ATtiny85

oh

@coding_corgi Are you sure you don't live in a haunted house? Never met anyone with as many AVR-programming-problems as you face.

2

coding_corgi

@jippie You mean VCC and GND?

jippie

3:29 PM

Yes VCC and GND

coding_corgi

@jippie Pretty positive, no one else but my family has lived in it

jippie

is it approx 5VDC?

coding_corgi

Good one though

jippie

@coding_corgi You may star that.

coding_corgi

@jippie Already did

jippie

3:30 PM

oh someone done already :)

:))

coding_corgi

Let me try your sugg. though

jippie

have any capacitors at hand?

coding_corgi

@jippie Many

jippie

@coding_corgi what values?

coding_corgi

Umm...

10 microfarats

they are all from Sparkfun's Component Starter Kit

jippie

3:32 PM

@coding_corgi anything like 100nF?

coding_corgi

10 - 0.1uF cap
5 - 100uF cap
5 - 10uF cap
5 - 1uF cap
5 - 10nF cap
5 - 1nF cap
5 - 100pF cap
5 - 10pF cap

jippie

Find one of '10 - 0.1uF cap'

coding_corgi

ok, got it

Oh, i just tried out the power for the ATtiny, it changed .01V

but nothing more

what is the cap. for?

jippie

push it on the breadboard such that one terminal connects to pin 8 (VCC) and the other one connects to pin 4 (GND)

coding_corgi

@jippie so one leg goes to gnd and the other to vcc?

jippie

3:38 PM

yup

coding_corgi

ok...

Toby Lawrence

stupid Atmel not having package drawings available on their website >:|

coding_corgi

ok

what do i do now

jippie

@coding_corgi retry?

coding_corgi

@jippie retry programming? No multimeter?

jippie

3:41 PM

retry programming

coding_corgi

ok

Here are the errors:

avrdude: stk500_paged_write(): (a) protocol error, expect=0x14, resp=0x11
avrdude: Send: V [56] @ [40] . [00] . [00] . [0e] [20]
avrdude: Recv: . [15]
avrdude: stk500_cmd(): programmer is out of sync

what do they mean?

jippie

@coding_corgi it means something is malfunctioning.

coding_corgi

@jippie Something like?

jippie

@coding_corgi I have no idea what keeps going wrong.

coding_corgi

@jippie Would a continuity check to VCC and GND tell us something?

@jippie I switched MISO and MOSI around an I got

avrdude: Device signature = 0x000000
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.

jippie

3:54 PM

Yes that is quite likely when you switch MOSI and MISO

@coding_corgi with that error, the 10 minutes ago, you are actually talking to the attiny. With the last error there is no communications at all with the attiny

@coding_corgi are you sure you didn't fry this controller with previous experiments?

coding_corgi

@jippie What the Arduino or the tiny?

Transcript for