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166  Using Arduino / Displays / Re: Need to make it stop on: August 05, 2014, 05:13:06 pm
Nice, the problem is solved.

Do you understand why ?
167  Community / Website and Forum / Re: SPAM alert. on: August 05, 2014, 04:56:33 pm
Lots of people got this, and i just reported it as i entered this forum (because i did receive it too).
So it was reported.
The user seems not yet to be banned, but i'm counting on it that that will not last a day.
168  Using Arduino / General Electronics / Re: How screwed am I? (Failed solder attempt) on: August 03, 2014, 05:50:04 pm
Where do I connect the reset pin to on the arduino?

Look over here

Regarding the tip about repairing by soldering thin wires to some tracks:
That's a job for someone who has practiced a lot and has reasonable experience.
I'm afraid you're not there yet.
If i'm seeing it correctly, you have torn off all pads but one, and 3 tracks.
One of those tracks disappears under a chip (these tracks have turned from white (lacquered) to black).
That makes the rest of the trace very difficult to reach, unless you have a PCB layout where you can track those traces.

Further, the PCB is very likely to be double sided.
Is there similar damage to the other side ?
169  Using Arduino / Displays / Re: Need help with i2c adaptor for 16x2 lcd on: August 03, 2014, 04:58:10 am
That library is also required for the i2cLCDguesser i mentioned earlier.
It helps you find the correct constructor.
Different modules might have different pin to pin connections between the chip and the display, there's no standard.
That even happens between different versions of the same module.
So you'd have to track the traces and draw a map to find out about that, or use the guesser (which one would be easier ?)
170  General Category / General Discussion / Re: Arduino Language Name Alternative on: August 02, 2014, 03:31:38 pm
Quote from: GreenPhantom
'B' for 'Borland', a newer version of C++)

I doubted that, and so i had a peek at the opinions at wikipedia.
Borland is (or was) a software house that was known for their compilers, Turbo  Pascal (or should that be P++ nowadays ?) must have been the most well known which evolved later to Delphi.

Wikipedia's opinion is that the B in B++ was inherited from Bell labs' derivation of BCPL, which is described as a total different language from C.

My opinion is that there is no A++.
The Arduino programming language is C with an extra shell.
171  General Category / General Discussion / Re: Reintroductions on: August 02, 2014, 03:05:12 pm
Hoi SuperCow, welkom terug.

Since your last activities, a lot has changed.
IDE has evolved a bit and we're now at v 1.0.5.
Older libraries that worked with a version lower than 1.0 will likely not work anymore.
Did you know that, and did you adapt these libraries of yours ?
172  Using Arduino / Motors, Mechanics, and Power / Re: Google Little Box Challenge on: August 02, 2014, 10:27:02 am
Smaller also means shorter (internal) leads.
That again could mean less dissipation, so less waste of energy converted to heat.
Smaller usually also means higher switching speed, which might give some extra efficiency.

And of course easier to fit.
173  Using Arduino / Displays / Re: Problem connecting Arduino UNO and SaintSmart 20x4 on: August 02, 2014, 09:03:56 am
I missed that you wired it to 3 volts, but i don't think that is correct.
The unit i'm using is connected to 5 volts, but it isn't one from sainsmart.

I pointed out that you need to use the correct library.
This is what the sketch tells you:
Quote from: sketch
*  It requires using fm's LiquidCrystal library replacement:

You do not need to use this sketch if you know what adapter you have.
Because then you can find the correct settings to tell the library at which PCF8574 pins what LCD pins are connected, and that is what you need to know and tell the library.
You should be able to find this by visiting the website of the product.
If there is no website available, the above mentioned guesser comes in.

Perhaps you should wait for bperrybab to chime in (if he does see this thread), but as he's been telling about this sketch in 2013 (after introduction of IDE > 1.0), i assumed there are no issues left.
That could turn out incorrect, which does happen when assuming things.
174  Using Arduino / General Electronics / Re: What is a jack plug on: August 02, 2014, 08:08:39 am
Should i really explain this ?
175  Using Arduino / LEDs and Multiplexing / Re: Fading an RGB LED on and off on: August 02, 2014, 08:05:34 am
That means that you need to have a minimum level of one, not of zero.
The red needs to be higher than one, the sketch you showed would allow for either 2 or 3 as the lowest value for that (as you can't have the value 2.55).

There is indeed a minimum voltage for a LED to light.
But that's the beauty of PWM: the voltage is either zero or five volts (with an Arduino).
Your multimeter averages (takes about a second to do that) this, and would approach the value to some milli voltage shown.
That means your LED will be actually lit at full brightness, but for a very short time.
Your eyes do the averaging, like the multimeter does.

If the stepping isn't a problem you can ignore it.
Or ignore it for now.
You can try to improve towards a logarithmic scale later.

But first things first, let's get that LED dimmed without the color shifting noticeably.
176  Using Arduino / General Electronics / Re: What is a jack plug on: August 02, 2014, 07:38:22 am
Well, then this must be an interesting case, as both connectors seem to be of the hermaphrodite kind...
177  Using Arduino / Displays / Re: Problem connecting Arduino UNO and SaintSmart 20x4 on: August 02, 2014, 07:28:57 am
Yes you can.
A *.pde file is an Arduino sketch, made with an IDE version lower than 1.0.
You can open it by pointing to the Arduino program, or drag it to an already open IDE, i just tried that.
I can't tell how to do that if you are a non windows user, because i don't know.

By the way:
Read the requirements mentioned in the comments in top of the sketch.
178  Using Arduino / Displays / Re: Problem connecting Arduino UNO and SaintSmart 20x4 on: August 02, 2014, 07:09:06 am

Your information is insufficient, even though you put your test sketch in code tags.
What problem do you have ?

First thing that comes to mind is to use bpedrrybab's i2cLCDguesser sketch (click !).
179  Using Arduino / Displays / Re: Need help with i2c adaptor for 16x2 lcd on: August 02, 2014, 07:01:19 am
Did you try bperrybap's i2cLCDguesser sketch yet ?
Read that thread, the link leads you to the post that has the sketch in a zip file attached, but there is some good reading in the thread.
180  General Category / General Discussion / Re: Original or clone? on: August 02, 2014, 06:46:22 am
Quote from: johnwasser
Another difference: they seem to have taken the  "Made in Italy" text off the front (but not the R2-style back).

Same picture shows "Made in Italy" in the dead center of the front, next to the reset enable jumperpads.
And it's on the back too indeed.
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