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1  Using Arduino / General Electronics / Re: Etched copper PCB question on: July 11, 2014, 05:52:35 am
I use iTead all the time, and not just for prototyping, but for production runs too.  Sometimes the ident layer on their boards is a bit ropey, but it's adequate considering the low cost.

have you every used their assembly ?  I was looking for 1,000 boards, but so far the couple places I found wanted me to send them the chips.  seems silly to buy resistors from china, then send them to china....
Not yet, no.  Most places I have looked at so far have had a stock of basic components (resistors, MLCCs, etc) which they prefer you to use, but yes, anything more complex than that would need to be sent to them.  Most will allow you to order components from a supplier and have them sent direct to them, which is more efficient than bouncing them around the globe.

No offence to the Chinese as a people, but would I trust them to source my microchips for me?  Really?
2  Using Arduino / General Electronics / Re: Etched copper PCB question on: July 11, 2014, 05:35:59 am
I use iTead all the time, and not just for prototyping, but for production runs too.  Sometimes the ident layer on their boards is a bit ropey, but it's adequate considering the low cost.
3  Using Arduino / General Electronics / Re: Etched copper PCB question on: July 11, 2014, 05:13:42 am
I have all the etching kit here.  I can't remember the last time I used it smiley-wink

The online services are so cheap now that its worth the wait of delivery from China.  I'd only home etch now if I needed a board yesterday.
4  Development / Other Software Development / Re: UECIDE: A New Fork of the IDE on: July 10, 2014, 04:54:41 pm
I've just given the UECIDE website a bit of a facelift: http://uecide.org - looks much posher now.

The beta version with so many more bells and whistles (and the odd flange too) is nearing completion.  I'd like to get it released soon, so I need people to really test it thoroughly for me.  The downloads are at http://uecide.org/download - beta is at the bottom of the page.

Here's how the IDE looks now:


It's really beginning to come together into a really smart IDE...
5  Using Arduino / General Electronics / Re: Etched copper PCB question on: July 09, 2014, 04:58:23 pm
You need copper clad boards, etchant, some trays, and some way of getting a circuit design onto the board.

You can draw it by hand with a permanent marker, use stencils, toner transfer, photo resist... the choice is yours.

I have a tutorial for the toner transfer method I wrote a while back:

http://hacking.majenko.co.uk/toner-transfer-etching-part-1-designing-the-circuit
6  Using Arduino / General Electronics / Re: Power Issue on: July 09, 2014, 04:55:50 pm
Why is a 7809 feeding the 5V input of the Nano?
That is why I was querying the zenner diode.  It might be a 4V one reverse biased, which should leave 5V...

Dodgy though - a 7805 would be better,
7  Products / Arduino Yún / Re: ssh client code example for Arduino Yun? on: July 09, 2014, 03:33:14 am
That would be the normal way to perform a complex network task on the Yun, yes.

For SSH you don't need to provide a user password.  Set up a public/private key pair.  Have the private key stored on the Yun, and the public key authorized on the server, and ssh should be able to connect without requiring a password.

This could help: https://www.debian.org/devel/passwordlessssh
8  Products / Arduino Yún / Re: ssh client code example for Arduino Yun? on: July 08, 2014, 09:44:51 am
Perhaps it would help us to know what it is you are trying to achieve? 

If you're trying to compile SSH on the AVR chip then you're completely barking up the wrong tree.
9  Using Arduino / General Electronics / Re: Power Issue on: July 08, 2014, 06:33:32 am
What is it that's "shorting out"?

That Zenner concerns me.  What voltage is it, what orientation, and in general, what is it doing there?
10  Using Arduino / Programming Questions / Re: 4-7sigment with shift register 74hc595 on: July 05, 2014, 05:57:12 am
It's a little hard to see just how you are doing the displaying, but I think you are using 1 shift register and multiplexing that across multiple displays.

If that is the case, then you are most likely suffering from "ghosting".

There is a specific way of doing multiplexed displays, and people often overlook or forget it.  The correct sequence should be:

1. Disable all commons
2. Load shift register
3. Enable one common
4. Delay
5. Disable all commons
6. Load shift register
7. Enable next common
8. Delay
... etc ...

It's important to ensure all commons are disabled while you are updating the shift register, as the data from the previous digit will still be there until the current digit has been shifted in and latched.  You could theoretically have the shifting as part of the delay, however the latching MUST be done with all the commons disabled.
11  Using Arduino / Programming Questions / Re: Which arduino is the most powerful ? on: July 02, 2014, 01:39:04 pm
The question is meaningless.

Define "most powerful"...?

The question you should be asking instead is:

"Which Arduino best fits my needs?"
12  Using Arduino / Programming Questions / Re: Aruino as micro programmer on: July 02, 2014, 01:38:10 pm
If you are unable to speak English, then I suggest you ask the question (whatever it is) in the forum for your native language.

Als u niet in staat om Engels te spreken zijn, dan stel ik u de vraag (wat het ook is) in het forum voor uw moedertaal te vragen.

Si vous êtes incapable de parler anglais, alors je vous suggère de poser la question (quel qu'il soit) dans le forum de votre langue maternelle.

Wenn Sie nicht in der Lage, Englisch zu sprechen sind, dann empfehle ich Ihnen die Frage (was auch immer es ist) im Forum für Ihre Muttersprache zu fragen.

Ha nem tudja, hogy beszél angolul, akkor azt javaslom, feltenni a kérdést (bármi legyen is az) a fórumon az anyanyelvén.

Se non siete in grado di parlare inglese, allora ti suggerisco di porre la domanda (qualunque esso sia) nel forum per la lingua nativa.

あなたが英語を話すことができない場合は、私はあなたの母国語のためのフォーラムに質問(それが何であれ)に依頼をお勧めします。

Jei jūs negalite kalbėti angliškai, tada aš siūlau jums užduoti klausimą (kokia ji yra) į savo gimtąja kalba forume.

Se você é incapaz de falar Inglês, então eu sugiro que você faça a pergunta (seja ele qual for) no fórum para o seu idioma nativo.

Dacă nu sunt în măsură să vorbească limba engleză, atunci vă sugerez să pun întrebarea (oricare ar fi ea) în forumul pentru limba dvs. maternă.

Si usted no puede hablar Inglés, entonces le sugiero que haga la pregunta (lo que sea) en el foro correspondiente a su idioma nativo.

Om du inte kan tala engelska, så jag föreslår att du ställer frågan (vad det nu är) i forumet för ditt modersmål.

Os nad ydych yn gallu siarad Saesneg, yna yr wyf yn awgrymu eich bod yn gofyn y cwestiwn (beth bynnag ydyw) yn y fforwm ar gyfer eich iaith frodorol.
13  Using Arduino / Programming Questions / Re: Compiling error: error: stray '\' in program on: June 17, 2014, 03:58:59 am
Use ' instead of ‘
14  Using Arduino / General Electronics / Re: How in the heck is this supposed to work - grill igniter on: June 15, 2014, 06:47:33 pm
Peizo-Electric compression igniter?

http://en.wikipedia.org/wiki/Piezoelectricity
15  Using Arduino / Programming Questions / Re: "Grouping" integer values from an array on: June 13, 2014, 06:34:16 pm
You end up with a C string, so you can use all the C string functions, such as
Code:
if (strcmp(data, "563") == 0) {
  // yes, they match
}
And you can convert to an integer with atoi:
Code:
int val = atoi(data);
Or if you just want an integer you can do as David suggests and calculate it from the values by multiplying each digit by 10n.
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