found on a russian site

Code:

#define R3_PIN       A0
#define SPEAKER_PIN  11

#define T2_WGM   0b010
#define T2_COMA  0b01
#define T2_CS    0b111

void setup() {
  TCCR2A = (T2_COMA << 6) | (T2_WGM & 0b011);
  TCCR2B = ((T2_WGM & 0b100) << 1) | T2_CS;
  OCR2A = 255;
   pinMode(R3_PIN, INPUT);
  pinMode(SPEAKER_PIN, OUTPUT);
}
void loop() {
  OCR2A = map(analogRead(R3_PIN), 0, 1023, 0, 255);
}

sounds good and loud. But without change frequency after interval. It is analogue.

PS  still can't launch IDE on my fedora netbook  ]

Clean everything AGAIN. Remove all  preferences, all programs.

Install avr-binutils, gcc-avr and other stuff,
download and unpack IDE-0022.

Still don't work:

Code:

check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL

now i try to make IDE from src
 ] hate bugs!

after reinstalling everything concerned with avr (avrdude, gcc-avr and other stuff), the IDE launced fine, see the board... BUT!
 new problem:

Code:

Cannot run programm "avr-ar": java.io.IOException: error=2, no such file or directory

What to do? 

(most probably I failed my project because of BUGS and ERRORs  )

 
the blink-example not working.

How to restore the original firmware of USB-controller? 

it is  working on win-computer. On my main comp avrdude print

Code:

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

this firmware:

Code:

wget --no-check-certificate https://github.com/arduino/Arduino/raw/master/hardware/arduino/firmwares/arduino-usbserial/Arduino-usbserial-uno.hex

md5sum Arduino-usbserial-uno.hex

dfu-programmer at90usb82 erase

dfu-programmer at90usb82 flash Arduino-usbserial-uno.hex

dfu-programmer at90usb82 reset

then i reinstall everything concerned with Arduino and AVR.
But all this does not help me. Avrdude prints about invalid signature.

And IDE0022 from site print many symbols:

Code:

~/Arduino> ./arduino
Experimental:  JNI_OnLoad called.
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL
check_group_uucp(): error testing lock file creation Error details:Отказано в доступеcheck_lock_status: No permission to create lock file.
please see: How can I use Lock Files with rxtx? in INSTALL

  my arduino and IDE works fine today... Without this bugs.

well, today I "brick" my new UNO (serial connection bug).

After reflashing  (instructions from this forum), reinstalling IDE and updating my Fedora14 distribution, the ttyACM0 returned, the board visible again...

BUT! The problem is:

Code:

Binary sketch size: 1020 bytes (of a 32256 byte maximum)
/usr/bin/avrdude -C/etc/avrdude/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P/dev/ttyACM0 -b115200 -D -Uflash:w:/tmp/build5870022447805682951.tmp/Blink.cpp.hex:i

avrdude: Version 5.10, compiled on Mar  2 2011 at 22:07:09
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/etc/avrdude/avrdude.conf"
         User configuration file is "/home/zaq/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/ttyACM0
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 115200
avrdude: Send: 0 [30]   [20]
Blink.cpp.o: file not recognized: File truncated
collect2: ld returned 1 exit status
Binary sketch size: 1020 bytes (of a 32256 byte maximum)
/usr/bin/avrdude -C/etc/avrdude/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P/dev/ttyACM0 -b115200 -D -Uflash:w:/tmp/build5870022447805682951.tmp/Blink.cpp.hex:i
avrdude: Send: 0 [30]   [20]

avrdude: Version 5.10, compiled on Mar  2 2011 at 22:07:09
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/etc/avrdude/avrdude.conf"
         User configuration file is "/home/zaq/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/ttyACM0
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 115200
avrdude: Send: 0 [30]   [20]
avrdude: Send: 0 [30]   [20]
avrdude: Recv: . [10]
avrdude: stk500_getsync(): not in sync: resp=0x10
avrdude: Send: 0 [30]   [20]

avrdude done.  Thank you.

avrdude: Send: 0 [30]   [20]
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding

avrdude done.  Thank you.

IDE write something like "avrdude not understand the device. Try -C to <something>"

What to do???

Thank You!

  ] ] ] ] ]

just break my new arduino uno!!!   

now try to reanimate it (stupid serial port bug.........)

stupid me 
 

anyway, would You be so kind, and write correct code for serial part of the program? To change the frequencies from serial console. It is too long to compile and upload new frequencies every time.

I just don't understand how it works.

[AWOL]

AWOL

this is from the example Blink Without Delay

How to do the change the frequency and LEDs colour without use of delay function?

And how to do the use of a button?

I'm stuck 

Now I made a mechanical part of the Chladni-plate.

[Serial]

well... It was the mix of different programs. It is hard to understand

So, I tried to make the new code from the scratch.

It is the early draft  

char buffer[18];  //input buffer
int red, green, blue;

int RedPin = 9;   // red LED
int GreenPin = 10; //green LED
int BluePin = 11;  // Blue LED
int spkr = 13;  // speaker output
int button = 7; // button
int numChar = Serial.available();
long previousMillis = 0;   //interval
long interval = 5000;

void setup()
{
  Serial.begin(9600); //serial port
Serial.flush();  
pinMode(RedPin, OUTPUT);
pinMode(GreenPin, OUTPUT);
pinMode(BluePin, OUTPUT);
pinMode(spkr, OUTPUT);
pinMode(button, INPUT);

/*I can't manage with serial control of the tones.
And has a difficulties with logical operations to control a button
(I mean - if you press the button the frequency changes. If not -
"the interval" change the frequency)
The code to change the power of LEDs - not the problem.
I will add it later
*/

}
void loop()
{
  tone (spkr, 1000, 2000);                 // tone 1
                                            //here must be the code to change the colour of LEDs
  if (millis() - previousMillis > interval);
  
  tone (spkr, 2000, 2000);                 // tone 2
  if (millis() - previousMillis > interval);
  
  tone (spkr, 3000, 2000);                 // tone 3
  if (millis() - previousMillis > interval);

tone (spkr, 4000, 2000);                 // tone 4
  if (millis() - previousMillis > interval);
  
  tone (spkr, 5000, 2000);                 // tone 5
  if (millis() - previousMillis > interval);
  
  tone (spkr, 6000, 2000);                 // tone 6
  if (millis() - previousMillis > interval);
  
  tone (spkr, 7000, 2000);                 // tone 7
  if (millis() - previousMillis > interval);
  
  tone (spkr, 8000, 2000);                 // tone 8
  if (millis() - previousMillis > interval);
  
  tone (spkr, 9000, 2000);                 // tone 9
  if (millis() - previousMillis > interval);
  
  tone (spkr, 10000, 2000);                 // tone 10
   if (millis() - previousMillis > interval);
  
   tone (spkr, 11000, 2000);                 // tone 11
  if (millis() - previousMillis > interval);

tone (spkr, 12000, 2000);                 // tone 12
  if (millis() - previousMillis > interval);
}

I need a device to command a mechanical plate driver.
so, it must produce 12 different sound frequencies. Every frequency must change in some minutes, AND has an option to change "manually", by pressing a key. Every frequency must have a "unique" colour-combination of the LEDs (this LEDs are lighten the plate).

Code... I tried a code from the arduino tutorials: mood lamp (works fine), serial controlled buzzer (don't want to work), buzzer (works fine).

My problem that when I combine the code from different programs, set the names of the variables - the code doesn't want to work

I will show my program in Monday, when I get to my working computer - the code is there

Now the Arduino only buzz on 6000Hz for 10 seconds, wait for a 30 seconds and buzz again
 

Sorry for disturbing! But I need help!
I made a project for my design studies. It is a kind of a electric Chlandi Plate which must work as a time indicator (another words - a clock)


picture from Instructables

I made my generator, but stuck on programming an Arduino.  Please, help my to made a program!
My design idea is to change the patterns on a plate in two ways:
1)automatically after a certain period of time
2) manually - when press the button
at the same time the LEDs, which lighten the plate must change their colours.

Plus, to choose the correct frequencies of generator i need a Serial Console.

My problem is - that I have bought the Arduino 2 weeks ago and still learn how to program it.

And I need to finish this object to 22th of March - in two days!

Thank You for Your attention!

i mean some device like Zipit2 or Ben NanoNote or some other  handheld with keyboard and linux.

I think it may be REALLY useful device

Especially if it cheap

PS  my dream - is a device in form-factor (design) of Psion 5MX, with same power-source and time of work
USB-hub and 3G, FPGA-accelerated
Amiga OS powered