Hi! I am an artist trying to get the Arduino Pulse sensor amped processing sketch to beep (through the computer) every BPM (Beat per minute). The sketch already enlarges a picture of a heart every BPM, I just want to add sound so it sounds like an ECG scanner (like in a hospital).
This is the link to the original sketches:
http://pulsesensor.myshopify.com/pages/code-and-guide
This is the code I've been using, I bolded the things that I tried to add in, but don't really know what I am doing, can you see my error? I think part of it is I don't have any kind of stop to the sound, but when I add one, it doesn't play at all then. The sound is really short that I am using, less than a second long.:
- /*
- THIS PROGRAM WORKS WITH PulseSensorAmped_Arduino-xx ARDUINO CODE
- THE PULSE DATA WINDOW IS SCALEABLE WITH SCROLLBAR AT BOTTOM OF SCREEN
- PRESS 'S' OR 's' KEY TO SAVE A PICTURE OF THE SCREEN IN SKETCH FOLDER (.jpg)
- MADE BY JOEL MURPHY AUGUST, 2012
- */
- import ddf.minim.*;
- import processing.serial.*;
- PFont font;
- Scrollbar scaleBar;
- Minim minim;
- AudioPlayer player;
- Serial port;
- int Sensor; // HOLDS PULSE SENSOR DATA FROM ARDUINO
- int HRV; // HOLDS TIME BETWEN HEARTBEATS FROM ARDUINO
- int BPM; // HOLDS HEART RATE VALUE FROM ARDUINO
- int[] RawY; // HOLDS HEARTBEAT WAVEFORM DATA BEFORE SCALING
- int[] ScaledY; // USED TO POSITION SCALED HEARTBEAT WAVEFORM
- int[] rate; // USED TO POSITION BPM DATA WAVEFORM
- float zoom; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
- float offset; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
- color eggshell = color(255, 253, 248);
- int heart = 0; // This variable times the heart image 'pulse' on screen
- // THESE VARIABLES DETERMINE THE SIZE OF THE DATA WINDOWS
- int PulseWindowWidth = 490;
- int PulseWindowHeight = 512;
- int BPMWindowWidth = 180;
- int BPMWindowHeight = 340;
- boolean beat = false; // set when a heart beat is detected, then cleared when the BPM graph is advanced
- void setup() {
- size(700, 600); // Stage size
- frameRate(100);
- font = loadFont("Arial-BoldMT-24.vlw");
- textFont(font);
- textAlign(CENTER);
- rectMode(CENTER);
- // Scrollbar inputs: x,y,width,height,minVal,maxVal
- scaleBar = new Scrollbar (310, 575, 180, 8, 0.5, 1.0); // set parameters for the scale bar
- RawY = new int[PulseWindowWidth]; // initialize raw pulse waveform array
- ScaledY = new int[PulseWindowWidth]; // initialize scaled pulse waveform array
- rate = new int [BPMWindowWidth]; // initialize BPM waveform array
- zoom = 0.75; // initialize scale of heartbeat window
- // set the visualizer lines to 0
- for (int i=0; i<rate.length; i++){
- rate[i] = 555; // Place BPM graph line at bottom of BPM Window
- }
- for (int i=0; i<RawY.length; i++){
- RawY[i] = height/2; // initialize the pulse window data line to V/2
- }
- // GO FIND THE ARDUINO
- println(Serial.list()); // print a list of available serial ports
- // choose the number between the [] that is connected to the Arduino
- port = new Serial(this, Serial.list()[0], 115200); // make sure Arduino is talking serial at this baud rate
- port.clear(); // flush buffer
- port.bufferUntil('\n'); // set buffer full flag on receipt of carriage return
- }
- void draw() {
- background(0);
- noStroke();
- // DRAW OUT THE PULSE WINDOW AND BPM WINDOW RECTANGLES
- fill(eggshell); // color for the window background
- rect(255,height/2,PulseWindowWidth,PulseWindowHeight);
- rect(600,385,BPMWindowWidth,BPMWindowHeight);
- // DRAW THE PULSE WAVEFORM
- // prepare Pulse Window Screen
- stroke(0,175,200); // set up to draw a line at +V/2 (512 on the ADC)
- line(10, height/2, PulseWindowWidth+10, height/2); // draw a line at +V/2
- // prepare pulse data points
- RawY[RawY.length-1] = (1023 - Sensor) - 212; // place the new raw datapoint at the end of the array
- zoom = scaleBar.getPos(); // get current waveform scale value
- offset = map(zoom,0.5,1,150,0); // calculate the offset needed at this scale
- for (int i = 0; i < RawY.length-1; i++) { // move the pulse waveform by
- RawY[i] = RawY[i+1]; // shifting all raw datapoints one pixel left
- float dummy = RawY[i] * zoom + offset; // adjust the raw data to the selected scale
- ScaledY[i] = constrain(int(dummy),44,556); // transfer the raw data array to the scaled array
- }
- stroke(250,0,0); // red is a good color for the pulse waveform
- noFill();
- beginShape(); // using beginShape() renders fast
- for (int x = 1; x < ScaledY.length-1; x++) {
- vertex(x+10, ScaledY[x]); //draw a line connecting the data points
- }
- endShape();
- // DRAW THE BPM WAVE FORM
- // first, shift the BPM waveform over to fit then next data point only when a beat is found
- if (beat == true){ // move the heart rate line over one pixel every time the heart beats
- beat = false; // clear beat flag (beat flag waset in serialEvent tab)
- for (int i=0; i<rate.length-1; i++){
- rate[i] = rate[i+1]; // shift the bpm Y coordinates over one pixel to the left
- }
- // then limit and scale the BPM value
- BPM = min(BPM,200); // limit the highest BPM value to 200
- float dummy = map(BPM,0,200,555,215); // map it to the heart rate window Y
- rate[rate.length-1] = int(dummy); // set the rightmost pixel to the new data point value
- }
- // GRAPH THE HEART RATE WAVEFORM
- stroke(250,0,0); // color of heart rate graph
- strokeWeight(2); // thicker line is easier to read
- noFill();
- beginShape();
- for (int i=0; i < rate.length-1; i++){ // variable 'i' will take the place of pixel x position
- vertex(i+510, rate[i]); // display history of heart rate datapoints
- }
- endShape();
- // DRAW THE HEART AND MAYBE MAKE IT BEAT
- fill(250,0,0);
- stroke(250,0,0);
- // the 'heart' variable is set in serialEvent when arduino sees a beat happen
- heart--; // heart is used to time how long the heart graphic swells when your heart beats
- heart = max(heart,0); // don't let the heart variable go into negative numbers
- if (heart > 0){ // if a beat happened recently,
- strokeWeight(8); // make the heart big
- /**
- * This sketch demonstrates how to play a file with Minim using an AudioPlayer. <br />
- * It's also a good example of how to draw the waveform of the audio.
- * <p>
- * For more information about Minim and additional features, visit http://code.compartmental.net/minim/
- */
- {
- // we pass this to Minim so that it can load files from the data directory
- minim = new Minim(this);
- // loadFile will look in all the same places as loadImage does.
- // this means you can find files that are in the data folder and the
- // sketch folder. you can also pass an absolute path, or a URL.
- player = minim.loadFile("beep-7.mp3");
- // play the file from start to finish.
- // if you want to play the file again,
- // you need to call rewind() first.
- player.play();
- }
- }
- smooth(); // draw the heart with two bezier curves
- bezier(width-100,50, width-20,-20, width,140, width-100,150);
- bezier(width-100,50, width-190,-20, width-200,140, width-100,150);
- strokeWeight(1); // reset the strokeWeight for next time
- // PRINT THE DATA AND VARIABLE VALUES
- fill(eggshell); // get ready to print text
- text("Pulse Sensor Amped Visualizer 1.0",245,30); // tell them what you are
- text("HRV " + HRV + "mS",600,585); // print the time between heartbeats in mS
- text(BPM + " BPM",600,200); // print the Beats Per Minute
- text("Pulse Window Scale " + nf(zoom,1,2), 150, 585); // show the current scale of Pulse Window
- // DO THE SCROLLBAR THINGS
- scaleBar.update (mouseX, mouseY);
- scaleBar.display();
- //
- } //end of draw loop
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