دو شنبه,۰۷ مهر ماه ۱۳۹۹مطابق با
۱۰ صفر ۱۴۴۲ هجرى قمرى
AD8232 Heart Rate Monitor
We’ll connect five of the nine pins on the board to your Arduino.
The five pins you need are labeled GND, 3.3v, OUTPUT, LO-, and LO+.
The Device is as default is three-electrode circuit also in DC lead off detecion Mode.
+IN and -IN are connected with two 10M to the 3.3v.
AC/DC comnected to the Ground.
Connecting Headers to the Board
By this point, you should have the hardware connected and ready.
LOD- or LOD+ pins will be high when the input are not connected.
Original Program for AD8232 Heart Rate sensor.
https://github.com/sparkfun/AD8232_Heart_Rate_Monitor
Note: The code can sketch only through the processing-2.2.1 release.
The device works but results was not so great.
Here my preprocessing program (processing-2.2.1 release)
import processing.serial.*;
Serial myPort; // The serial port int xPos = 1; // horizontal int yPos = 100; float yOld = 0; float yNew = 0; float inByte = 0; int lastS = 0; PFont f;
void setup () {
size(1200, 500);
println(Serial.list());
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[0], 9600);
myPort.bufferUntil('\n');
background(0xff);
}
void draw () {
int s = second();
PFont f = createFont("Arial",9,false);
textFont(f,9);
fill(0);
if (s != lastS){
stroke(0xcc, 0xcc, 0xcc);
line(xPos, yPos+10, xPos, yPos+30);
text(s + " Sec.", xPos+5, yPos+30);
lastS = s;
}
}
void mousePressed(){
save(lastS + "-heart.jpg");
}
void serialEvent (Serial myPort) {
String inString = myPort.readStringUntil('\n');
if (inString != null) {
inString = trim(inString);
if (inString.equals("!")) {
stroke(0, 0, 0xff); // blue
inByte = 1023; // middle of the ADC range (Flat Line)
} else {
stroke(0xff, 0, 0); //Set stroke to red ( R, G, B)
inByte = float(inString);
}
//Map and draw the line for new data point
inByte = map(inByte, 0, 1023, 0, height);
yNew = inByte;
line(xPos-1, yPos-yOld, xPos, yPos-yNew);
yOld = yNew;
// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 1;
yPos+=200;
if (yPos > height-200){
xPos = 1;
yPos=100;
background(0xff);
}
} else {
// increment the horizontal position:
xPos++;
}
}
}