biomurph
commented
4 years ago It would help if you posted some of the 'garbage' you are getting. Are you using the right baud rate (9600) for the sketch? What Arduino hardware are you using? Please send a photo of your Pulse Sensor and setup for verification.
I am Constantly getting garbage value for the Pulse rate sensor. This is the code that I am using.
/* Getting_BPM_to_Monitor prints the BPM to the Serial Monitor, using the least lines of code and PulseSensor Library.
--------Use This Sketch To------------------------------------------ 1) Displays user's live and changing BPM, Beats Per Minute, in Arduino's native Serial Monitor. 2) Print: "♥ A HeartBeat Happened !" when a beat is detected, live. 2) Learn about using a PulseSensor Library "Object". 4) Blinks LED on PIN 13 with user's Heartbeat. --------------------------------------------------------------------*/
define USE_ARDUINO_INTERRUPTS true // Set-up low-level interrupts for most acurate BPM math.
include // Includes the PulseSensorPlayground Library.
// Variables const int PulseWire = 0; // PulseSensor PURPLE WIRE connected to ANALOG PIN 0 const int LED13 = 13; // The on-board Arduino LED, close to PIN 13. int Threshold = 550; // Determine which Signal to "count as a beat" and which to ignore. // Use the "Gettting Started Project" to fine-tune Threshold Value beyond default setting. // Otherwise leave the default "550" value.
PulseSensorPlayground pulseSensor; // Creates an instance of the PulseSensorPlayground object called "pulseSensor"
void setup() {
Serial.begin(9600); // For Serial Monitor
// Configure the PulseSensor object, by assigning our variables to it. pulseSensor.analogInput(PulseWire);
pulseSensor.blinkOnPulse(LED13); //auto-magically blink Arduino's LED with heartbeat. pulseSensor.setThreshold(Threshold);
// Double-check the "pulseSensor" object was created and "began" seeing a signal. if (pulseSensor.begin()) { Serial.println("We created a pulseSensor Object !"); //This prints one time at Arduino power-up, or on Arduino reset.
} }
void loop() {
int myBPM = pulseSensor.getBeatsPerMinute(); // Calls function on our pulseSensor object that returns BPM as an "int". // "myBPM" hold this BPM value now.
if (pulseSensor.sawStartOfBeat()) { // Constantly test to see if "a beat happened". Serial.println("♥ A HeartBeat Happened ! "); // If test is "true", print a message "a heartbeat happened". Serial.print("BPM: "); // Print phrase "BPM: " Serial.println(myBPM); // Print the value inside of myBPM. }
delay(20); // considered best practice in a simple sketch.
}