arduino心跳模組專案

暨上次挑戰完雙溫濕度計感測模組以後，最近終於下定決心要去做心跳模組了。
雖然之前上雙溫濕度計感測模組覺得沒有很成功，因為學生在裝設arduino就要花太多時間了，何況是需要串聯、插麵包板時候。
已經覺得降低很多難度與門檻了，看來還是遠遠不夠，造成計畫持續延宕。
而且每讓教學現場下降一門檻，我自己的時間成本就會拉好高好高，不斷的反思這樣是否可以真的實現在教室內呢?還是只能在延伸課程中?

之前在教師研習時也覺得arduino光是插線就是一件很困難的事情，老師覺得困難，學生操作時當然也是一樣的。

最近因為計畫死線關係，重還是必須完成arduino設計，讓下一年的課程可能可以用到這個工具，這次寫完這個專案其實滿有成就感的。

目標是做一個可以顯示心跳數值跟圖像化表現專案
心跳越快下面的心臟數量越多，閃爍速度也越快。
然後超過心跳120，會有火的圖形出現，140兩個火，160三個火，表示達到燃脂運動區間

先說說這次拼湊了那些元件與概念
1.PulseSensor基本介紹
https://pulsesensor.com/pages/code-and-guide

1.LCD畫圖方式，心型，跳動的心型
https://www.youtube.com/watch?v=jaD0dJtovwc
謝KK偷插電資訊課的畫圖程式
http://163.22.72.1/html5/colour_by_numbers/html5_colour_by_numbers/colour_by_numbers.html

2.迴圈與判斷式if，else if
http://ming-shian.blogspot.tw/2013/09/arduino.html
http://www.86duino.com/?p=593&lang=TW

3.燃脂心跳區間
http://www.dreye-health.com/SingularController?service=goCheck&path=feat


認真參考過但是後來發現自己等級還不夠的資料

1.Arduino Based Heartbeat Monitor
http://www.circuitstoday.com/pulse-sensor-arduino
https://circuitdigest.com/microcontroller-projects/heartbeat-monitor-project-using-arduino

2.arduino數學函數
http://yhhuang1966.blogspot.tw/2015/09/arduino_23.html

3.millis()時間函數
http://coopermaa2nd.blogspot.tw/2011/04/millis-button.html
http://coopermaa2nd.blogspot.tw/2011/04/millis.html
http://yhhuang1966.blogspot.tw/2015/09/arduino_9.html
http://rainage.blogspot.tw/2016/02/arduino.html

需要準備的東西
1.下載程式庫pulsesensor playground
2.開啟範例pulsesensor playground → Getting_BPM_to_Monitor
3.把我的檔案倒進去就可以了
--------------以下是程式碼部分--------------

/*  Getting_BPM_to_Monitor prints the BPM to the Serial Monitor, using the least lines of code and PulseSensor Library.
 *  Tutorial Webpage: https://pulsesensor.com/pages/getting-advanced
 *
--------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 <PulseSensorPlayground.h>     // Includes the PulseSensorPlayground Library. 
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// 設定 LCD I2C 位址
// Set the pins on the I2C chip used for LCD connections:
// addr, en,rw,rs,d4,d5,d6,d7,bl,blpol

//LED_Fundino紅色板子用
//LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
//LED_MH黑色板子用
LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);


//  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.
int z,a;

PulseSensorPlayground pulseSensor;  // Creates an instance of the PulseSensorPlayground object called "pulseSensor"

//建立心型
byte heart_h[8] = {
  B00000,
  B00000,
  B01010,
  B10101,
  B10001,
  B01010,
  B00100,
  B00000
};
byte heart_f[8] = {
  B00000,
  B00000,
  B01010,
  B11111,
  B11111,
  B01110,
  B00100,
  B00000
};
//建立火型
byte fire[8] = {
  B00100,
  B10100,
  B10100,
  B11100,
  B10101,
  B10011,
  B11001,
  B01110
};
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.
  }
  // 初始化 LCD，一行 16 的字元，共 2 行，預設開啟背光
  lcd.begin(16, 2);

  //建立心型
  lcd.createChar (1, heart_h);  // load heart_h to memory 1
  lcd.createChar (2, heart_f);  // load heart_f to memory 2
  lcd.createChar (3, fire);    // load fire to memory 3
 
  pinMode(LED13,OUTPUT);    // pin that will blink to your heartbeat!

  // 閃爍兩次
  for (int i = 0; i < 1; i++) {
    lcd.backlight(); // 開啟背光
    delay(250);
    lcd.noBacklight(); // 關閉背光
    delay(250);
  }
  lcd.backlight();

  // 輸出初始化文字
  lcd.setCursor(0, 0); // 設定游標位置在第一行行首
  lcd.print("Hello, Maker!");
  delay(500);
  lcd.setCursor(0, 1); // 設定游標位置在第二行行首
  lcd.print("heartbeat");
  delay(1000);
  lcd.clear(); //顯示清除
}



void loop() {

 int myBPM = pulseSensor.getBeatsPerMinute();  // Calls function on our pulseSensor object that returns BPM as an "int".
                                          // "myBPM" hold this BPM value now.
 lcd.setCursor(0, 0); // 設定游標位置在第一行行首
 lcd.print("HeartBeat=");

 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.
  lcd.print(" ");
  lcd.print(myBPM);
  lcd.print("      ");

  //心型跳動
  for(z=1;z<=2;z=z+1){
    lcd.setCursor(0,1);  // 設定游標位置在第二行行首

    if(myBPM<80){       //判別心跳介於哪個區間，if，else if判斷式
      lcd.print(char(z));
      lcd.print("                ");
      delay(20000/myBPM);  //不知道為什麼這樣跟心跳頻率滿接近的，是try error得到的結果
    }
    else if(myBPM>=80 && myBPM<100){
      lcd.print(char(z)); 
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print("              ");
      delay(20000/myBPM);
    }
    else if(myBPM>=100 && myBPM<120){
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print("                ");
      delay(20000/myBPM);
    }
    else if(myBPM>=120 && myBPM<140){
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print("        ");
      lcd.print(char(3));
      delay(20000/myBPM);
    }
    else if(myBPM>=140 && myBPM<160){
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print("     ");
      lcd.print(char(3));
      lcd.print(char(3));
      delay(20000/myBPM);
    }
    else if(myBPM>=160){
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print(char(z));
      lcd.print("   ");
      lcd.print(char(3));
      lcd.print(char(3));
      lcd.print(char(3));
      delay(20000/myBPM);
    }
  }
 }
 else{
  lcd.print(" ");
  lcd.print(myBPM);
  lcd.print(" ");
  }
}






-------------------以下是露天網購材料與價錢-------------
單顆18650升壓5V充電裝置，共127元
18650電池，68元
http://goods.ruten.com.tw/item/show?21516007891673
電池盒，8元
http://goods.ruten.com.tw/item/show?21514873619557
充電保護裝置，30元
http://goods.ruten.com.tw/item/show?21529155040880
升壓模組，18元
http://goods.ruten.com.tw/item/show?21513816706112
開關，3元
http://goods.ruten.com.tw/item/show?21645325862802

Arduino IIC I2C 5V LCD，165元
http://goods.ruten.com.tw/item/show?21550344478159#qa&p=1

Arduino Pulse Sensor 脈搏 心率 感測器模組，190元
http://goods.ruten.com.tw/item/show?21530165613441

Arduino UNO，170元
http://goods.ruten.com.tw/item/show?21513818850541

以上價錢不含運也不含稅，本人也沒有收廣告費XD，請自己找更便宜或是喜歡的方式購買
基本上淘寶價錢會更低大概一半，東西也很輕，可以考慮一下