ah ok, thanks for this information.

Hm ok i thought everything should clear. But i try to describe it more in detail. I hooked up 4 shift registers like so: (example 2)
http://arduino.cc/en/Tutorial/ShiftOut.
I am using the shift registers to control 9 rgb less. For this i use the ShiftPWM Library. But this library is only for working with leds, so i cant use this library to get my button value (high or low). I hope its more understandable now ? Sorry but because i dont know how to program this i can't upload a little test sketch.

I got 4 Shift Registers. On Q3 of register number 4 i'd like to hook up a button and whenever the button is pressed I'd like to recognize it.

Code:

pinMode(Q3 of register 4, INPUT);
if(Q3 of register 4 == HIGH) {
}

So how can i accomplish that ? Any idea ?
Thanks

thanks a lot

Hey, first of all great project ! I like the sounds very much. Do you think you could send me the melody and noteDurations array for these two sounds ?

Hey, i am searching for two sound examples for my piezo buzzer.
Currently i am using the piezo with the example from arduino

Code:

int melody[] = {
  262, 196,196, 220, 196,0, 247, 262};

// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
  4, 8, 8, 4,4,4,4,4 };

 for (int thisNote = 0; thisNote < 8; thisNote++) {
    int noteDuration = 1000/noteDurations[thisNote];
    tone(12, melody[thisNote],noteDuration);
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    noTone(12);
    }

But i am searching for a sound that underlines whether the user won or lost. But i can't find any examples for arduino/piezo sounds. So maybe you have some hints for me where i can find sounds like that for my arduino, or maybe you composed sounds like that by yourself ?!

Thanks

Yeah sure so my function would be something like

Code:

void randomColor(int led) {
int rand = random(0,3);
if (rand == 0) {
colorRed(led);
}
else if (rand == 1) {
colorGreen(led);
}
else if (rand == 2) {
colorBlue(led);
}
}

and then
for (int i = 0;i<ledArray.length;i++) {
randomColor(i);
}

right ?

I will try that out now.

Hey,
i have 9 RGB Led's. Each of this led should light up red, green or blue. Which color the led lights up should be randomly.
Therefore i wrote this method (which works) but i hope that you can give me a better solution:

Code:

int rand=random(0,2);
if(rand == 0) {
lightRed(led1);
}
else if (rand == 1) {
lightGreen(led1);
}
else if (rand == 2) {
lightBlue(led1);
}

int rand2=random(0,2);
if(rand2 == 0) {
lightRed(led2);
}
else if (rand2 == 1) {
lightGreen(led2);
}
else if (rand2 == 2) {
lightBlue(led2);
}
.....

int rand9 = random(0,2);
if(rand9 == 0) {
lightRed(led9);
}
else if (rand9 == 1) {
lightGreen(led9);
}
else if (rand9 == 2) {
lightBlue(led9);
}

....way to much code. There must be a more elegant solution.
Thanks for your help.

Ah i see... thanks for the quick and easy help !

Hm this is getting complicated... do you know a library which plays tone with timer1 ? ShiftPWM Library says it would use timer1 by default and just because i uncomment the define statement it would use timer 2. But if i uncomment the define statement again he tries to use timer3 and not timer1 by default... so maybe i should contact the developer of this library.

// ShiftPWM uses timer1 by default. To use a different timer, before '#include <ShiftPWM.h>', add  #define SHIFTPWM_USE_TIMER2  // for Arduino Uno and earlier (Atmega328)

Hey, i got this ShiftPWM Library: https://github.com/elcojacobs/ShiftPWM/downloads
At the beginning of the code i got this statement:

Code:

#define SHIFTPWM_USE_TIMER2

If i just uncomment this i get this error message:

Code:

"The avr you are using does not have a timer3"

The problem is that i also want to play a tone on my piezo buzzer. Therefore i got this code:

Code:

for (int thisNote = 0; thisNote < 8; thisNote++) {
    int noteDuration = 1000/noteDurations[thisNote];
    tone(12, melody[thisNote],noteDuration);
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    noTone(12);
    }

Which is working fine in a single project, but combined with the shiftpwm library and its define statment i get the following error message:

Code:

core.a(Tone.cpp.o): In function `__vector_7':
/Applications/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/Tone.cpp:523: multiple definition of `__vector_7'
ShiftPWM_RGB_Example.cpp.o:/Users/david/Documents/Arduino/libraries/ShiftPWM/ShiftPWM.h:190: first defined here

So i went to the Tone.cpp file and i saw that there is also an timer2 statement which (in my opinion) causes this error.

I am new to this arduino stuff and i can make some minor bug fixes or something like that, but this error is too complicated for me at this time.
Do you have an idea how i can solve the puzzle ?

Btw if it helps you these are line 190 following from ShiftPW:

Code:

#elif defined(SHIFTPWM_USE_TIMER2)
//Install the Interrupt Service Routine (ISR) for Timer1 compare and match A.
ISR(TIMER2_COMPA_vect) {
ShiftPWM_handleInterrupt();
}

and line 523 following from Tone.cpp:

Code:

ISR(TIMER2_COMPA_vect)
{

  if (timer2_toggle_count != 0)
  {
    // toggle the pin
    *timer2_pin_port ^= timer2_pin_mask;

    if (timer2_toggle_count > 0)
      timer2_toggle_count--;
  }
  else
  {
    // need to call noTone() so that the tone_pins[] entry is reset, so the
    // timer gets initialized next time we call tone().
    // XXX: this assumes timer 2 is always the first one used.
    noTone(tone_pins[0]);
//    disableTimer(2);
//    *timer2_pin_port &= ~(timer2_pin_mask);  // keep pin low after stop
  }
}

Code:

shiftOut(dataPin, clockPin, MSBFIRST, 255);

See that 255, that is saying make all the outputs a one. That is light up all the LEDs. If you only want to light up one then use a number that has only one bit with a one in it.
Numbers like 1, 2, 4, 8, 16, 32, 64, or 128

How do you mean that ?
How can i get the right number to my led or how can i assign a number to one of my led's ?

Hey, i got a shift register (74hc595) and i'd like to light up my rgb led. Everything is connected but i have problems with the code.
Say my rgb led is connected to Q0,Q1 and Q2 of my shift register (Pin 15,1,2). How can i light up the rgb led (i want to switch between the color blue, green and red). I got this example which is working, but i don't know how to go on and how to achieve the thing mentioned above.

Code:

//**************************************************************//
//  Name    : shiftOutCode, Hello World                               
//  Author  : Carlyn Maw,Tom Igoe, David A. Mellis
//  Date    : 25 Oct, 2006   
//  Modified: 23 Mar 2010                                 
//  Version : 2.0                                             
//  Notes   : Code for using a 74HC595 Shift Register           //
//          : to count from 0 to 255                           
//****************************************************************

//Pin connected to ST_CP of 74HC595
int latchPin = 8;
//Pin connected to SH_CP of 74HC595
int clockPin = 12;
////Pin connected to DS of 74HC595
int dataPin = 11;



void setup() {
  //set pins to output so you can control the shift register
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
}

void loop() {
  // count from 0 to 255 and display the number
  // on the LEDs

    // take the latchPin low so
    // the LEDs don't change while you're sending in bits:
    digitalWrite(latchPin, LOW);
    // shift out the bits:
    shiftOut(dataPin, clockPin, MSBFIRST, 255);

    //take the latch pin high so the LEDs will light up:
    digitalWrite(latchPin, HIGH);
    // pause before next value:
    delay(500);
 
}

This lights up my rgb led which is has the color white-blue with this code.
Please help me out and give me hints how to change the code so i can control whether my rgb led lights up green, red or blue.

Thanks !

Ok danke !
Habe es nun hinbekommen... habe einfach das shield aufgesetzt und die pins per female/male jumper wire nutzen können. Tatsächlich sind die Button nur auf A0... hatte ich wohl überlesen.
Also danke !

Hey, i got a LCD Shield from DFRobot: http://www.robotshop.com/content/PDF/dfrobot-arduino-shields-manual.pdf
Now i need to hook it up to my Arduino UNO, but i don't want the buttons (its a lcd + keypad) to waste my digital pins, because i dont need the keypad for my current project. So i thought i might not slide the shield above my arduino, but i connect it by myself via jumper wires, so i can only connect the pins i need or want. The lcd lights up when i connect Ground and 5V. But which pins from the lcd i need to connect to which pin of my arduino to change the text on the lcd ? i am not quite sure.
I posted the datasheet above, also here you can see a picture of the lcd


Hopefully someone can guide me through this
Thanks