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4261  Using Arduino / Project Guidance / Re: "Load mapping" SRAM memory use in Arduino? on: November 13, 2011, 01:53:36 pm
Also he as advised using "const" for variables, this put them in flash, correct?
In this case, your pro-friend is wrong.  const will not place constants/variables into FLASH.  They will still consume RAM during the program's execution.  Only variables which are explicitly placed into PROGMEM get put into FLASH.

The only thing "const" really does is generate complier errors if your code attempts to modify a "constant."
4262  Development / Other Hardware Development / Re: $1000 Open Hardware Innovation Grants on: November 13, 2011, 11:37:33 am
What happens if a projects submitted but didn't win? Then the project stays open source? For $1,000 USD right, some serious work is involved so opening the source is a hard decision.
If the only incentive to make a project open source is a cash prize, it shouldn't be entered (or considered.)

4263  Using Arduino / Project Guidance / Re: mega 2560 vs uno on: November 13, 2011, 10:52:03 am
can you tell me the drawbacks and plus points of the uno and the mega 2560....
That information was in the first reply to your post.  Why repeat?
4264  Using Arduino / Installation & Troubleshooting / Re: TX and RX pins on Duemilnova Not Work on: November 12, 2011, 07:59:24 pm
I tried this with an Arduino Uno, and it worked fine.

Does your Duemillnove have an ATmega168 or 328 chip?
4265  Using Arduino / Programming Questions / Re: Still having problems , where do i add libraries on: November 12, 2011, 04:38:50 pm
In file included from wiiblue.cpp:4:
Yeah, that isn't what meant by downloaded.  Where did you get the library from in the first place?
4266  Using Arduino / Project Guidance / Re: Atmega328 freezes on: November 12, 2011, 04:36:45 pm
I couldn't find them at the last open electronics shop on Friday evening, and I had no choice but to see if it worked without them. Do you think that's the problem?

Yup.  They aren't optional.  They are critical to the oscillator's operation.
4267  Using Arduino / Programming Questions / Re: " 'String' does not name a type" in header file on: November 12, 2011, 04:29:01 pm
Thanks. It fixed my problem. What exactly does including wprogram do?

If you look at the actual files, WProgram.h includes WString.h, which defines String.
4268  Using Arduino / Programming Questions / Re: Still having problems , where do i add libraries on: November 12, 2011, 04:27:11 pm
The "Usb/Usb.h" seems off for a Windows system.  

Where did you download the library from?
4269  Using Arduino / Programming Questions / Re: How to run Arduino and C++ (for Windows) example on: November 12, 2011, 12:22:22 pm
[quote author=polgia0 link=topic=78732.msg594417#msg594417 date=1321085968]
does somebody may suggest a procedure to compile the tutorial example using : Code::Block + Mingw32 ?
What tutorial is this? 
4270  Using Arduino / Installation & Troubleshooting / Re: Running 4 arduino(clone) boards on one PC - possible??? on: November 12, 2011, 12:09:18 pm
I have four arduino clones that i need to run on one PC. only 1 works, the other 3 throw up sync errors to do with avrdude (whetever that is)
avrdude is the utility the IDE uses to program the Arduino.

Are all three boards the same variant?
4271  Using Arduino / Installation & Troubleshooting / Re: Arduino Nano 328 Heat if powered via VIN&GROUND on: November 12, 2011, 11:34:05 am
Is that normal? Am i making some mistake?
Do you have anything else connected to the Nano?
4272  Using Arduino / General Electronics / Re: Maximum voltage VIN-Pin on: November 12, 2011, 11:21:30 am
5.5V is too high to connect to the +5V pin since the ATmega chip probably has a maximum input voltage of 5.3V. 
No, the ATmega can safely tolerate 5.5V (absolute Max is 6V). 

The good news is that if you connect to the Vin line you will probably get 4.5V out of the regulator which will be enough to run at full speed
This doesn't seem like a good idea at all.  Depending on how much current is drawn, the regulator won't be stable.
4273  Using Arduino / Microcontrollers / Re: Offical Arduino WiFi Shield: When? on: November 11, 2011, 10:23:41 pm
There is one being worked on?
4274  Using Arduino / Installation & Troubleshooting / Re: ROMEO installation on: November 11, 2011, 07:20:49 pm
I don't understand what that thread has to do with anything.  YOU need to write out the steps YOU have taken to get the FTDI drivers installed. 
4275  Using Arduino / Programming Questions / Re: Still having problems , where do i add libraries on: November 11, 2011, 07:03:19 pm
In the IDE

Sketch -> Import library -> <library list>

Whatever libraries are listed there are in the correct directory.
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