This is a guide to make an LED flashing circuit that "beats" to an mp3 file on your computer, which can add an awesome effect to any sound-related device, or even your room (if you extend the concept with LED drivers or plenty of resistors/transistors).
The LED flashing circuit makes use of the Minim audio library and the Arduino program Processing to analyze sound, producing a response based on a snare drum hit, a bass drum hit, and a hi-hat hit from the percussion of the audio file.
The LED flashing circuit makes use of the Minim audio library and the Arduino program Processing to analyze sound, producing a response based on a snare drum hit, a bass drum hit, and a hi-hat hit from the percussion of the audio file.
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Signing UpStep 1: Parts/Tools Needed
Here is what you'll need to make the LED beat flashing circuit:
Hardware:
1. An Arduino microcontroller board. There are many versions of the Arduino, but I would recommend the Arduino Duemilanove. You can buy one online for around $20.
2. Three LEDs (different colors preferred, so you can see the difference in beats easier - I used a red, yellow, and green LED)
3. Three resistors (depending on your LEDs, the resistor value will be different - check the ratings on the LEDs to see what resistance corresponds to their maximum brightness, without burning them out)
4. A solderless breadboard
5. Some wire, to use as leads from the Arduino to the LEDs/resistors on the breadboard
6. A computer
7. A USB cable (A to B)
Software:
1. Arduino Software Environment
2. Processing Software Environment
3. The "arduino" library for Processing
4. The BeatWrite / BeatListener code from the minim JavaSound library examples
Download links for the software will follow in Step 3.
Hardware:
1. An Arduino microcontroller board. There are many versions of the Arduino, but I would recommend the Arduino Duemilanove. You can buy one online for around $20.
2. Three LEDs (different colors preferred, so you can see the difference in beats easier - I used a red, yellow, and green LED)
3. Three resistors (depending on your LEDs, the resistor value will be different - check the ratings on the LEDs to see what resistance corresponds to their maximum brightness, without burning them out)
4. A solderless breadboard
5. Some wire, to use as leads from the Arduino to the LEDs/resistors on the breadboard
6. A computer
7. A USB cable (A to B)
Software:
1. Arduino Software Environment
2. Processing Software Environment
3. The "arduino" library for Processing
4. The BeatWrite / BeatListener code from the minim JavaSound library examples
Download links for the software will follow in Step 3.
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Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: No framebuffer objects available
at processing.opengl.PGL$PGLListener.init(PGL.java:3255)
at jogamp.opengl.GLDrawableHelper.init(GLDrawableHelper.java:532)
at jogamp.opengl.GLDrawableHelper.init(GLDrawableHelper.java:552)
at javax.media.opengl.awt.GLCanvas$5.run(GLCanvas.java:1032)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1019)
at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:896)
at javax.media.opengl.awt.GLCanvas$7.run(GLCanvas.java:1060)
at javax.media.opengl.Threading.invoke(Threading.java:193)
at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:461)
at javax.media.opengl.awt.GLCanvas.paint(GLCanvas.java:516)
at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248)
at sun.awt.RepaintArea.paint(RepaintArea.java:224)
at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:308)
at java.awt.Component.dispatchEventImpl(Component.java:4736)
at java.awt.Component.dispatchEvent(Component.java:4488)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:668)
at java.awt.EventQueue.access$400(EventQueue.java:81)
at java.awt.EventQueue$2.run(EventQueue.java:627)
at java.awt.EventQueue$2.run(EventQueue.java:625)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$3.run(EventQueue.java:641)
at java.awt.EventQueue$3.run(EventQueue.java:639)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:638)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Exception in thread "Animation Thread" java.lang.RuntimeException: java.lang.RuntimeException: Processing cannot run because GLSL shaders are not available.
at jogamp.common.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:99)
at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:205)
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
at javax.media.opengl.Threading.invoke(Threading.java:191)
at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:461)
at processing.opengl.PGL.requestDraw(PGL.java:1195)
at processing.opengl.PGraphicsOpenGL.requestDraw(PGraphicsOpenGL.java:1550)
at processing.core.PApplet.run(PApplet.java:2140)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException: Processing cannot run because GLSL shaders are not available.
at processing.opengl.PGraphicsOpenGL.getGLParameters(PGraphicsOpenGL.java:6077)
at processing.opengl.PGraphicsOpenGL.beginDraw(PGraphicsOpenGL.java:1580)
at processing.core.PApplet.handleDraw(PApplet.java:2219)
at processing.opengl.PGL$PGLListener.display(PGL.java:3240)
at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:573)
at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:558)
at javax.media.opengl.awt.GLCanvas$6.run(GLCanvas.java:1049)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1021)
at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:896)
at javax.media.opengl.awt.GLCanvas$7.run(GLCanvas.java:1060)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:666)
at java.awt.EventQueue.access$400(EventQueue.java:81)
at java.awt.EventQueue$2.run(EventQueue.java:627)
at java.awt.EventQueue$2.run(EventQueue.java:625)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:636)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
beat.setSensitivity(1);
kickSize = snareSize = hatSize = 500
time to rig it up to some bridge rectifiers, isolators and some A/C lights
I also got "ArrayIndexOutOfBoundsException" -- To get this fixed;
Changed line 35 from;
arduino = new Arduino(this, Arduino.list()[1], 57600);
To;
arduino = new Arduino(this, Arduino.list()[0], 57600);
And then it works!! :)
"NullPointerException" on processing
An highlighting the line "song = minim.loadfile("mysong.mp3", 2048);"
But I would appreciate it if someone would help with arduino. When I try to upload it, is says "avrdude: stk500_getsync() : not in sync: resp=0x30" What exactly does that mean and how do I fix it; because I think it has something to do with "ArrayIndexOutOfBoundsException: 1
WARNING: RXTX Version mismatch
Jar version = RXTX-2.2pre1
native lib Version = RXTX-2.2pre2
Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException: 1
at sketch_jan20a.setup(sketch_jan20a.java:59)
at processing.core.PApplet.handleDraw(Unknown Source)
at processing.core.PApplet.run(Unknown Source
at java.lang.Thread.run(Thread.java:662)" on processing.
(btw: "sketch_jan20a." is the name of the processing page I put the code on) If someone could help with either or both of these, it would be much appreciated!
"Cannot find a class or type named 'BeatListener'"
How do I fix this? What am I missing? No ones' answers are helping me.
Libraries must be installed in a folder called "libraries" inside the "sketchbook" folder.
I've found the libraries folder in the arduino-1.0.3 folder but I cant find sketchbook folder
Exception in thread "AWT-EventQueue-0" java.lang.IllegalAccessError: tried to access class processing.core.PApplet$RegisteredMethods from class cc.arduino.Arduino$SerialProxy
HELP!!!!
OpenGL error 1280 at top beginDraw(): invalid enumerant
Help please
~Hyrulian
In processing, in line 35,
arduino = new Arduino(this, Arduino.list()[1], 57600);
I get an error saying, ArrayIndexOutOfBoundsException: 1
What do I do? I've had my Arduino Duemilaneve for about 4 days now, so I'm really a noob, Haha :p
Please help,
much appreciated.
try that
Take a look at the post I made to Sentinel in the comments below. I have quoted it here for your convenience:
It looks like you have other serial devices connected to your computer, other than the Arduino. Try calling Arduino.list() on its own line in the setup() portion of the program, like this:
void setup() {
println(Arduino.list());
}
Then choose the appropriate Arduino listing when you make a new Arduino object, like this:
arduino = new Arduino(this, Arduino.list()[Whatever index you find in the Arduino.listI()], 57600);
~Hyrulian
/**
* This sketch demonstrates how to use the BeatDetect object in FREQ_ENERGY mode.
* You can use
isKick,isSnare, isHat,isRange,* and
isOnset(int)to track whatever kind of beats you are looking to track, they will report* true or false based on the state of the analysis. To "tick" the analysis you must call
detect* with successive buffers of audio. You can do this inside of
draw, but you are likely to miss some* audio buffers if you do this. The sketch implements an
AudioListenercalledBeatListener* so that it can call
detecton every buffer of audio processed by the system without repeating a buffer* or missing one.
*
* This sketch plays an entire song so it may be a little slow to load.
*/
import processing.serial.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import cc.arduino.*;
Minim minim;
AudioPlayer song;
BeatDetect beat;
BeatListener bl;
Arduino arduino;
int ledPin = 12; // LED connected to digital pin 12
int ledPin2 = 8; // LED connected to digital pin 1
int ledPin3 = 2; // LED connected to digital pin 0
float kickSize, snareSize, hatSize;
void setup() {println.Arduino.list();}
size(512, 200, P3D);
minim = new Minim(this);
arduino = new Arduino(this, Arduino.list()[1], 57600);
song = minim.loadFile("Soy Bomb", 2048);
song.play();
// a beat detection object that is FREQ_ENERGY mode that
// expects buffers the length of song's buffer size
// and samples captured at songs's sample rate
beat = new BeatDetect(song.bufferSize(), song.sampleRate());
// set the sensitivity to 300 milliseconds
// After a beat has been detected, the algorithm will wait for 300 milliseconds
// before allowing another beat to be reported. You can use this to dampen the
// algorithm if it is giving too many false-positives. The default value is 10,
// which is essentially no damping. If you try to set the sensitivity to a negative value,
// an error will be reported and it will be set to 10 instead.
beat.setSensitivity(100);
kickSize = snareSize = hatSize = 16;
// make a new beat listener, so that we won't miss any buffers for the analysis
bl = new BeatListener(beat, song);
textFont(createFont("Helvetica", 16));
textAlign(CENTER);
arduino.pinMode(ledPin, Arduino.OUTPUT);
arduino.pinMode(ledPin2, Arduino.OUTPUT);
arduino.pinMode(ledPin3, Arduino.OUTPUT);
}
void draw() {
background(0);
fill(255);
if(beat.isKick()) {
arduino.digitalWrite(ledPin, Arduino.HIGH); // set the LED on
kickSize = 32;
}
if(beat.isSnare()) {
arduino.digitalWrite(ledPin2, Arduino.HIGH); // set the LED on
snareSize = 32;
}
if(beat.isHat()) {
arduino.digitalWrite(ledPin3, Arduino.HIGH); // set the LED on
hatSize = 32;
}
arduino.digitalWrite(ledPin, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin2, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin3, Arduino.LOW); // set the LED off
textSize(kickSize);
text("KICK", width/4, height/2);
textSize(snareSize);
text("SNARE", width/2, height/2);
textSize(hatSize);
text("HAT", 3*width/4, height/2);
kickSize = constrain(kickSize * 0.95, 16, 32);
snareSize = constrain(snareSize * 0.95, 16, 32);
hatSize = constrain(hatSize * 0.95, 16, 32);
}
void stop() {
// always close Minim audio classes when you are finished with them
song.close();
// always stop Minim before exiting
minim.stop();
// this closes the sketch
super.stop();
}
Ok, println fixed that error, but now I get an error with the next line, line 36
size(512, 200, P3D); gest a "It looks like you're mixing "active" and "static" modes." error.
What should I do about this 1?
Thanks again for all your help!
I hope I'm not to much much of a bother, haha :P
You're not a bother at all, here's your problem, on this line:
void setup() {println.Arduino.list();}
You forgot to take out the ending bracket here when you were debugging. Take out the last curly bracket on this line, and you should be good, like this:
void setup() {println.Arduino.list();
~Hyrulian
That kinda fixed it, but I get a different error this time
void setup() {println.Arduino.list(); says " Cannot find anything named "println" "
Grrrr! This is getting a bit flustering ):
-ringofrizz
println.Arduino.list();
you should have
println(Arduino.list());
with the parentheses.
~Hyrulian
But then I get a "ArrayIndexOutOfBoundsException: 1" error on
arduino = new Arduino(this, Arduino.list()[1], 57600); still.
I don't get whats wrong :(
/**
* This sketch demonstrates how to use the BeatDetect object in FREQ_ENERGY mode.
* You can use
isKick,isSnare, isHat,isRange,* and
isOnset(int)to track whatever kind of beats you are looking to track, they will report* true or false based on the state of the analysis. To "tick" the analysis you must call
detect* with successive buffers of audio. You can do this inside of
draw, but you are likely to miss some* audio buffers if you do this. The sketch implements an
AudioListenercalledBeatListener* so that it can call
detecton every buffer of audio processed by the system without repeating a buffer* or missing one.
*
* This sketch plays an entire song so it may be a little slow to load.
*/
import processing.serial.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import cc.arduino.*;
Minim minim;
AudioPlayer song;
BeatDetect beat;
BeatListener bl;
Arduino arduino;
int ledPin = 12; // LED connected to digital pin 12
int ledPin2 = 8; // LED connected to digital pin 1
int ledPin3 = 2; // LED connected to digital pin 0
float kickSize, snareSize, hatSize;
void setup() {println(Arduino.list());
size(512, 200, P3D);
minim = new Minim(this);
arduino = new Arduino(this, Arduino.list()[1], 57600);
song = minim.loadFile("Soy Bomb", 2048);
song.play();
// a beat detection object that is FREQ_ENERGY mode that
// expects buffers the length of song's buffer size
// and samples captured at songs's sample rate
beat = new BeatDetect(song.bufferSize(), song.sampleRate());
// set the sensitivity to 300 milliseconds
// After a beat has been detected, the algorithm will wait for 300 milliseconds
// before allowing another beat to be reported. You can use this to dampen the
// algorithm if it is giving too many false-positives. The default value is 10,
// which is essentially no damping. If you try to set the sensitivity to a negative value,
// an error will be reported and it will be set to 10 instead.
beat.setSensitivity(100);
kickSize = snareSize = hatSize = 16;
// make a new beat listener, so that we won't miss any buffers for the analysis
bl = new BeatListener(beat, song);
textFont(createFont("Helvetica", 16));
textAlign(CENTER);
arduino.pinMode(ledPin, Arduino.OUTPUT);
arduino.pinMode(ledPin2, Arduino.OUTPUT);
arduino.pinMode(ledPin3, Arduino.OUTPUT);
}
void draw() {
background(0);
fill(255);
if(beat.isKick()) {
arduino.digitalWrite(ledPin, Arduino.HIGH); // set the LED on
kickSize = 32;
}
if(beat.isSnare()) {
arduino.digitalWrite(ledPin2, Arduino.HIGH); // set the LED on
snareSize = 32;
}
if(beat.isHat()) {
arduino.digitalWrite(ledPin3, Arduino.HIGH); // set the LED on
hatSize = 32;
}
arduino.digitalWrite(ledPin, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin2, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin3, Arduino.LOW); // set the LED off
textSize(kickSize);
text("KICK", width/4, height/2);
textSize(snareSize);
text("SNARE", width/2, height/2);
textSize(hatSize);
text("HAT", 3*width/4, height/2);
kickSize = constrain(kickSize * 0.95, 16, 32);
snareSize = constrain(snareSize * 0.95, 16, 32);
hatSize = constrain(hatSize * 0.95, 16, 32);
}
void stop() {
// always close Minim audio classes when you are finished with them
song.close();
// always stop Minim before exiting
minim.stop();
// this closes the sketch
super.stop();
}
-ringofrizz (:
/**
* This sketch demonstrates how to use the BeatDetect object in FREQ_ENERGY mode.
* You can use isKick, isSnare, isHat, isRange,
* and isOnset(int) to track whatever kind of beats you are looking to track, they will report
* true or false based on the state of the analysis. To "tick" the analysis you must call detect
* with successive buffers of audio. You can do this inside of draw, but you are likely to miss some
* audio buffers if you do this. The sketch implements an AudioListener called BeatListener
* so that it can call detect on every buffer of audio processed by the system without repeating a buffer
* or missing one.
*
* This sketch plays an entire song so it may be a little slow to load.
*/
import processing.serial.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import cc.arduino.*;
Minim minim;
AudioPlayer song;
BeatDetect beat;
BeatListener bl;
Arduino arduino;
int ledPin = 12; // LED connected to digital pin 12
int ledPin2 = 8; // LED connected to digital pin 1
int ledPin3 = 2; // LED connected to digital pin 0
float kickSize, snareSize, hatSize;
void setup() {
println(Arduino.list());
}
void draw() {
background(0);
fill(255);
if(beat.isKick()) {
arduino.digitalWrite(ledPin, Arduino.HIGH); // set the LED on
kickSize = 32;
}
if(beat.isSnare()) {
arduino.digitalWrite(ledPin2, Arduino.HIGH); // set the LED on
snareSize = 32;
}
if(beat.isHat()) {
arduino.digitalWrite(ledPin3, Arduino.HIGH); // set the LED on
hatSize = 32;
}
arduino.digitalWrite(ledPin, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin2, Arduino.LOW); // set the LED off
arduino.digitalWrite(ledPin3, Arduino.LOW); // set the LED off
textSize(kickSize);
text("KICK", width/4, height/2);
textSize(snareSize);
text("SNARE", width/2, height/2);
textSize(hatSize);
text("HAT", 3*width/4, height/2);
kickSize = constrain(kickSize * 0.95, 16, 32);
snareSize = constrain(snareSize * 0.95, 16, 32);
hatSize = constrain(hatSize * 0.95, 16, 32);
}
void stop() {
// always close Minim audio classes when you are finished with them
song.close();
// always stop Minim before exiting
minim.stop();
// this closes the sketch
super.stop();
}
Look at what it prints out in your Serial Monitor, then change the value of the number "1" to whatever value the Arduino is.
~Hyrulian
It seems everything works except I get
"Cannot find a class or type named "BeatListener" " on BeatListener bl; :(
-ringofrizz
~Hyrulian