Anyone?

Hi,
I'm using a TLC5940 chip to PWN 4 RGB LEDS with a Duemilanove.  This works fine on it's own.
After adding the Adafruit PN532 RFID shield I can PWN the LEDS in void setup() and they work fine.  
Once in the main loop, this no longer works and I have lost control of the LEDS.

I believe the conflict is in pin 3.  The TLC5940 library http://code.google.com/p/tlc5940arduino/ uses pin 3 as the GSCLK or clock for PWM.

I know I saw pin 3 from the shield used for something, but can't find it now as there is no datasheet yet.  http://adafruit.com/products/789.
Ah, here it is.  
The example sketch has this:

Code:

#define RESET (3)  // Not connected by default on the NFC Shield

I have tried changing pin 3 in the TLC5940 library to pin 5 but this does not work.
Any ideas or advice?

Thanks.

My code is attached as well.

URGENT HELP!!!

The best way to get help is not to shout.
Try removing the caps and exclamation points in your title.

Check out this project I made a while back with a WAV shield.  I did have to solder the shield together, but it didn't take very long. Also note the sound was loud enough for my purposes and I did not need to amplify it.

http://electricprojects.wordpress.com/2011/05/08/sheep-doorbell/

You should be able to use the Tone function to produce one tone at a time.
http://arduino.cc/en/Tutorial/Tone

Otherwise I would think you need a regular Arduino like the Uno and a sound shield.

I'm not sure if this will work with your tags, but it is a RFID read/write shield.
http://adafruit.com/products/789

Do you have a link to your tags?

Seems like you are off to a decent start.
I would get one sensor at a time working first.
Once you have figured out how each sensor works, then try combing it into one program, one thing at a time.

I would add a counter variable.  Something like this (completely untested).  The variable count will only eqaul zero once.

Code:

void setup(){
int count =0;
}

void loop(){
if (count==0)
{
digitalWrite(x, HIGH);  //set pin_number X to HIGH
    delay(time_delay);
count=1;
}
    digitalWrite(x, LOW);   //set pin_number X to LOW
    delay(time_delay);
}

I would start by looking at toy stores.  You may find something close you need to modify.

Have you seen Trigger Trap?
https://triggertrap.com/

Break it into smaller chunks.  Make two posts.

Have you seen the OpenROV on kickstarter?
http://www.kickstarter.com/projects/openrov/openrov-the-open-source-underwater-robot

For parts, wheel, gears etc...mcmaster carr
http://www.mcmaster.com/#

Probably not enough power.
What are the specs on the sensor?
What batteries are you using?

What fan are you using?
Do you have a link to the datsaheet for the fan?