Temperature Measuring Automatic and Voice Inform

// www.youtube.com/c/engineer2you
#include <SD.h>                 // for SD card
#define SD_ChipSelectPin 10     // for SD card
#include <TMRpcm.h>             // Lib to play wav file
#include <Adafruit_MLX90614.h>  // for infrared thermometer
//-------------------------------------- oled
#include "SSD1306Ascii.h"
#include "SSD1306AsciiAvrI2c.h"
#define I2C_ADDRESS 0x3C  // 0X3C+SA0 - 0x3C or 0x3D
#define RST_PIN -1  // Define proper RST_PIN if required.
//--------------------------------------- oled
Adafruit_MLX90614 mlx = Adafruit_MLX90614();  //for infrared thermometer
SSD1306AsciiAvrI2c oled;  // create an object for LCD
TMRpcm tmrpcm;            // create an object for music player

double temp;  // to save temperature value
const int trigPin = 17;  //ultrasonic
const int echoPin = 16;  //ultrasonic
long duration;
int distance;
int step1_judge = 0;

void setup(){
  //--------------------------------------- oled
  #if RST_PIN >= 0
    oled.begin(&Adafruit128x64, I2C_ADDRESS, RST_PIN);
  #else // RST_PIN >= 0
    oled.begin(&Adafruit128x64, I2C_ADDRESS);
  #endif // RST_PIN >= 0
  // Call oled.setI2cClock(frequency) to change from the default frequency.
    oled.setFont(Adafruit5x7);
  //-------------------------------------- oled
  
  tmrpcm.speakerPin = 9; //pin 9 for output audio
  Serial.begin(9600);
  if (!SD.begin(SD_ChipSelectPin)) {  // see if the card is present and can be initialized:
    Serial.println("SD fail");
    Serial.println("SD ok");
    oled.clear();
    oled.set1X();
    oled.println("SD card fail");
    return;   // don't do anything more if not
  }
  else{   
    Serial.println("SD ok");
    oled.clear();
    oled.println("SD card ok");
  }
  delay(1000);
  tmrpcm.play("m_wel.wav"); //the sound file welcome will play each time the arduino powers up, or is reset
  tmrpcm.volume(1);
  oled.clear();
  oled.set2X();
  oled.println("");
  oled.println("  Welcome");
    
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input             
  mlx.begin();  //start infrared thermometer
  delay(10000);  //wait for welcome audio
}

void loop(){
  //------------reading distance
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH, 23529); //23529us for timeout 4.0m

  // Calculating the distance
  distance= duration*0.034/2;

  //speak_out(temp);
  Serial.print("distance is ");
  Serial.println(distance);
  if ((distance<10)&&(distance>0)) step1_judge++;
  else step1_judge=0;
  
  if (step1_judge>2){
    step1_judge=0;
    tmrpcm.play("m_wel.wav");
    delay(10000); //wait for welcome voice complete
    
    temp = mlx.readObjectTempC()+1.2;//---------------------reading temperature & show on LCD
    //temp = 37.4;  //for testing, comment this line for real reading
    oled.clear();
    oled.set2X();
    oled.println("");
    oled.print("  ");
    oled.print(temp,1);
    oled.println("dgC");
    
    tmrpcm.play("m_now.wav");
    delay(1380);
    
    if (temp<20){
      tmrpcm.play("m_b20.wav");  //speak out below 20 dgC
      delay(1700);               //wait for audio finish
      tmrpcm.play("m_nman.wav"); //speak out "you're not human"
      delay(2270);               //wait for audio finish
    }
    else{
      if (temp>50){
        tmrpcm.play("m_over50.wav"); //speak out over 50 dgC
        delay(1740);
        tmrpcm.play("m_nman.wav");   //speak out "you're not human"
        delay(2270);
      }
      else{
        speak_out(temp);  //speak out temperature (if it is from 20 to 50dgC)
        delay(1500);
        if((temp>36)&&(temp<37)){
          tmrpcm.play("m_normal.wav");  //speak out "normal temperature, keep healthy" if it is 36~37dgC
          delay(3268);
        }
        if(temp>37){
          tmrpcm.play("m_fever.wav"); //speak out "you got fever"
          delay(2728);
        }
      }
    }
  }
  delay(300);
}


void speak_out(double temperature_result){
  //this sub-program will speak out temperature
  temperature_result = temperature_result*10;
  temperature_result = round(temperature_result);
  int temp0 = temperature_result;
  int temp1 = temp0/10; //temperature value, xy digit (in xy.z dgC)
  int temp2 = temp1%10; //temperature value, y digit (in xy.z dgC)
  int temp3 = temp0%10; //temperature value, z digit (in xy.z dgC)

  if(temp1<20){
    tmrpcm.play("m_below20.wav"); //below 20dgC
    delay(1631);
  }
  if(temp1>50){
    tmrpcm.play("m_over50.wav"); //greater 50dgC
    delay(1747);
  }
  if((temp1>=20)&&(temp1<=29)){
    tmrpcm.play("m_twenty.wav"); //twenty
    delay(600);
  }
  if((temp1>=30)&&(temp1<=39)){
    tmrpcm.play("m_thirty.wav"); //thirty
    delay(500);
  }
  if((temp1>=40)&&(temp1<=49)){
    tmrpcm.play("m_fourty.wav"); //forty
    delay(691);
  }
  if (temp2!=0) speak_num(temp2); //temperature value, y digit (in xy.z dgC)
  if((temp1>=20)&&(temp1<=50)){
    tmrpcm.play("m_point.wav"); //point
    delay(319);
    speak_num(temp3); //temperature value, z digit (in xy.z dgC)
  }
  tmrpcm.play("m_dgc.wav"); //degree C
  delay(853);
  Serial.println(temp0);
  Serial.println(temp1);
  Serial.println(temp2);
  Serial.println(temp3);
}

void speak_num(int number){
  //this sub-program will be called in sub-program "speak_out()"
    if(number==1){
      tmrpcm.play("m_one.wav"); //one
      delay(453);
    }
    if(number==2){
      tmrpcm.play("m_two.wav"); //two
      delay(499);
    }
    if(number==3){
      tmrpcm.play("m_three.wav"); //three
      delay(406);
    }
    if(number==4){
      tmrpcm.play("m_four.wav"); //four
      delay(401);
    }
    if(number==5){
      tmrpcm.play("m_five.wav"); //five
      delay(354);
    }
    if(number==6){
      tmrpcm.play("m_six.wav"); //six
      delay(401);
    }
    if(number==7){
      tmrpcm.play("m_seven.wav"); //seven
      delay(633);
    }
    if(number==8){
      tmrpcm.play("m_eight.wav"); //eight
      delay(360);
    }
    if(number==9){
      tmrpcm.play("m_nine.wav"); //nine
      delay(580);
    }
    if(number==0){
      tmrpcm.play("m_zero.wav"); //zero
      delay(610);
    }
}