Hello Community!!
I'm working on a project that is aiming for getting a signal related the heartbeat from a pulse sensor. Basically, my circuit contains 10 LEDs. And those LEDs will light up when the heart bumps. But I don't know how sometimes just half of the LEDs will light up. (I'm a newbie so please be patient. ) Since I'm a new user, I dont' have the right (I think) to upload the scematic of the circuit to have a general idea.
What else can I provide in order to get some help ?
Ps : I tried to use code tags to make the code easy to read, I don't know if It's working or not.
```
/*
*/
#define USE_ARDUINO_INTERRUPTS false
#include <PulseSensorPlayground.h>
/*
The format of our output.
Set this to PROCESSING_VISUALIZER if you're going to run
the Processing Visualizer Sketch.
See https://github.com/WorldFamousElectronics/PulseSensor_Amped_Processing_Visualizer
Set this to SERIAL_PLOTTER if you're going to run
the Arduino IDE's Serial Plotter.
*/
const int OUTPUT_TYPE = SERIAL_PLOTTER;
const int PULSE_INPUT = A0; //PIN A0 is on Signal of Pulse sensor
const int PULSE_BLINK = 13; // Pin 13 is the on-board LED
const int THRESHOLD = 600; // A ajuster en fonction de votre montage
/*
samplesUntilReport = the number of samples remaining to read
until we want to report a sample over the serial connection.
We want to report a sample value over the serial port
only once every 20 milliseconds (10 samples) to avoid
doing Serial output faster than the Arduino can send.
*/
byte samplesUntilReport;
const byte SAMPLES_PER_SERIAL_SAMPLE = 10;
/*
All the PulseSensor Playground functions.
*/
PulseSensorPlayground pulseSensor;
/*LEDS
*/
int ledPins[] = {
2, 3, 4, 5, 6, 7, 8, 9, 10, 11
}; // an array of pin numbers to which LEDs are attached
int pinCount = 10;
//Minimum heart rate value to display on the LEDs
const byte bpmMin = 40;
const byte bpmMax = 110;
//SETUP
void setup() {
Serial.begin(115200);
// Configure the PulseSensor manager.
pulseSensor.analogInput(PULSE_INPUT);
pulseSensor.blinkOnPulse(PULSE_BLINK);
pulseSensor.setSerial(Serial);
pulseSensor.setOutputType(OUTPUT_TYPE);
pulseSensor.setThreshold(THRESHOLD);
//LEDS SETUP in Output
for (int thisPin = 0; thisPin < pinCount; thisPin++) {
pinMode(ledPins[thisPin], OUTPUT);
}
// Now that everything is ready, start reading the PulseSensor signal.
if (!pulseSensor.begin()) {//FAILED
/*
PulseSensor initialization failed,
likely because our Arduino platform interrupts
aren't supported yet.
If your Sketch hangs here, try changing USE_PS_INTERRUPT to false.
*/
for (;;) {
// Flash the led to show things didn't work.
digitalWrite(PULSE_BLINK, LOW);
delay(50);
digitalWrite(PULSE_BLINK, HIGH);
delay(50);
}
}
}
void loop() {
/*
See if a sample is ready from the PulseSensor.
If USE_INTERRUPTS is true, the PulseSensor Playground
will automatically read and process samples from
the PulseSensor.
If USE_INTERRUPTS is false, this call to sawNewSample()
will, if enough time has passed, read and process a
sample (analog voltage) from the PulseSensor.
*/
if (pulseSensor.sawNewSample()) {
/*
Every so often, send the latest Sample.
We don't print every sample, because our baud rate
won't support that much I/O.
*/
if (--samplesUntilReport == (byte) 0) {
samplesUntilReport = SAMPLES_PER_SERIAL_SAMPLE;
pulseSensor.outputSample();
/*
At about the beginning of every heartbeat,
report the heart rate and inter-beat-interval.
*/
if (pulseSensor.sawStartOfBeat()) {
pulseSensor.outputBeat();
int myBPM = pulseSensor.getBeatsPerMinute();
Serial.println("♥ A HeartBeat Happened ! "); // If test is "true", print a message "a heartbeat happened".
Serial.print("BPM: "); // Print phrase "BPM: "
Serial.println(myBPM);
if ( myBPM >= bpmMin && myBPM <= bpmMax ) {
int purcent = map(myBPM, bpmMin , bpmMax, 0, 100);
lightLed100(purcent);
delay(100);
lightLed100(0);
} else {
lightLed100(0);
}
}
}
}
/******
Don't add code here, because it could slow the sampling
from the PulseSensor.
******/
}
//Led on in purcentage
void lightLed100(int pourcent) {
//put to LOW first
for (int thisPin = 0; thisPin < pinCount; thisPin++) {
digitalWrite(ledPins[thisPin], LOW);
}
//PINS TO HIGH
int pinsToHigh = map(pourcent, 0 , 100, 0, pinCount);
for (int thisPin = 0; thisPin < pinsToHigh; thisPin++) {
digitalWrite(ledPins[thisPin], HIGH);
}
}
```