我们的代码没有认识到我们的心率阈值 . 我们有心率传感器，adafruit植物，4个LED和一个neopixel . 我们正试图让neopixel和LED根据某人的脉搏闪烁 . 而且我们试图让它能够在某人的心率更高（变成粉红色）和更低（变成蓝色）时，新像素从正常（白色）改变颜色 .
/* PulseSensor™ Starter Project and Signal Tester
* The Best Way to Get Started With, or See the Raw Signal of, your PulseSensor™ & Arduino.
*
* Here is a link to the tutorial
* https://pulsesensor.com/pages/code-and-guide
*
* WATCH ME (Tutorial Video):
* https://www.youtube.com/watch?v=82T_zBZQkOE
*
*
-------------------------------------------------------------
1) This shows a live human Heartbeat Pulse.
2) Live visualization in Arduino's Cool "Serial Plotter".
3) Blink an LED on each Heartbeat.
4) This is the direct Pulse Sensor's Signal.
5) A great first-step in troubleshooting your circuit and connections.
6) "Human-readable" code that is newbie friendly."
*/
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(1, 10, NEO_GRB + NEO_KHZ800);
#ifdef __AVR__
#include <avr/power.h>
#endif
#define PIN 10
#define NUMPIXELS 1
// Variables
int PulseSensorPurplePin = 6; // Pulse Sensor PURPLE WIRE connected to ANALOG PIN 0
int LED9 = 9; // The on-board Arduion LED
int Signal; // holds the incoming raw data. Signal value can range from 0-1024
int Threshold = 16; // Determine which Signal to "count as a beat", and which to ingore.
// The SetUp Function:
void setup() {
pinMode(9,OUTPUT); // pin that will blink to your heartbeat!
Serial.begin(9600); // Set's up Serial Communication at certain speed.
pinMode(10,OUTPUT);
Serial.begin(9600); // Set's up Serial Communication at certain speed.
pixels.begin();
}
// The Main Loop Function
void loop() {
Signal = analogRead(PulseSensorPurplePin); // Read the PulseSensor's value.
// Assign this value to the "Signal" variable.
Serial.println(Signal); // Send the Signal value to Serial Plotter.
if(Signal > Threshold)
{
Serial.print(Signal); Serial.println(" lux");
pixels.setPixelColor(0, pixels.Color(216,191,216));
pixels.show();
digitalWrite(LED9,HIGH);}
else if (12 > Signal > 16){
pixels.setPixelColor(0,pixels.Color(0,0,255));
pixels.show();
delay (10);
digitalWrite(LED9,LOW); // Else, the sigal must be below "550", so "turn-off" this LED.
}
else (18 > Signal > 20); {
pixels.setPixelColor(0,pixels.Color(255,0,0));
pixels.show();
delay (10);
}
}
// If the signal is above "550", then "turn-on" Arduino's on-Board LED.