Servo control and Heart Rate code

Using Arduino Project Guidance
#1

Hi everyone, Ive been using this code for my project I am running the servo with 2 modes the adult and the child and then I have to incorporate the Heart Rate monitoring, I have below the codes. I set the heart rate as a function the same I did with 2 modes of servo. Now the problem is, when I call the Heart(); after each mode (Child(); and Adult():wink: it is requiring me to input a heart rate in the sensor and then after that the motor will work. this is not the intended output.

the output should be:
the motor will run in the each mode selected and then the heart rate will have nothing to do with its running. If I input for heart, the motor will run on what is selected, if i didnt input for heart the motor will still run on what is selected.

thank you!

#include <Servo.h>

#include <dht.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
long randNumber;
Servo myservo;  // create servo object to control a servo 
                // a maximum of eight servo objects can be created 

int pos = 0;    // variable to store the servo position 
 int buttonPin = 3;
 int buttonPin2 = 4;
 int buttonPin3 = 5;
int buttonState = 0;
int buttonState2 = 0;
int buttonState3 = 0;
String string;
char command;
dht DHT;
int Pulse = A0;


#define DHT11_PIN 7

void setup(){
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(buttonPin2,INPUT_PULLUP);
  pinMode(buttonPin3,INPUT_PULLUP);
  
  randomSeed(analogRead(3));
  Serial.begin(9600);  // Used to type in characters

   myservo.attach(9);  // attaches the servo on pin 9 to the servo object 

  lcd.begin(20,4);   // initialize the lcd for 20 chars 4 lines, turn on backlight

  for(int i = 0; i< 3; i++)
  {
    lcd.backlight();
    delay(200);
    lcd.noBacklight();
    delay(200);
}
lcd.backlight();
}

void Child()
{
  
  lcd.setCursor(0,3); //Start at character 4 on line 0
  Serial.println("Flow:200-300mL/Pump");
  lcd.print("Flow:200-300mL/Pump");
  delay(15); 
  for(pos = 0; pos < 120; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(13);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 120; pos>=0; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(13);                       // waits 15ms for the servo to reach the position 
  }
  int chk = DHT.read11(DHT11_PIN);
  lcd.setCursor(0,1);
  // Serial.print("Temp: ");
  Serial.println("16-20 breaths/min");
  lcd.print("16-20 breaths/min");
  delay(15);
  lcd.setCursor(0,2);
  Serial.println("Humidity: ");
  Serial.print(DHT.humidity);
  lcd.print("Humidity: ");
  lcd.print(DHT.humidity);
  lcd.print("%");
  delay(15);
}

void Adult()
{
  
  lcd.setCursor(0,3);
  Serial.println("Flow:400-600mL/Pump");  
  lcd.print("Flow:400-600mL/Pump");
  delay(15);
  for(pos = 0; pos < 120; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(10);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 120; pos>=0; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(10);                       // waits 15ms for the servo to reach the position 
  } 
 int chk = DHT.read11(DHT11_PIN);
  lcd.setCursor(0,1);
  // Serial.print("Temp: ");

  Serial.println("16-20 breaths/min");
  lcd.print("10-12 breaths/min");
  delay(15);
  lcd.setCursor(0,2);
  Serial.println("Humidity: ");
  Serial.print(DHT.humidity);
  lcd.print("Humidity: ");
  lcd.print(DHT.humidity);
  lcd.print("%");
  delay(15);
}

void Heart()
{

  while (digitalRead(Pulse) == HIGH);
  while (digitalRead(Pulse) == LOW);
  int T1 = millis();
  while (digitalRead(Pulse) == HIGH);
  while (digitalRead(Pulse) == LOW);
  int T2 = millis();
  int Time = T2-T1;
  unsigned long HeartRate = 60000L;
  HeartRate = HeartRate/Time; 
  lcd.setCursor(0,0);
  Serial.print("BPM : ");
  Serial.println(HeartRate);
  lcd.print("BPM : ");
  lcd.print(HeartRate);
  if (HeartRate < 10) lcd.print(" "); // 0-9 add one space
  if (HeartRate < 100) lcd.print(" "); // 0-99 add one space
  if (HeartRate < 1000) lcd.print(" "); // 0-999 add one space
  millis();
  
  
}


void loop()
{

  buttonState = digitalRead(buttonPin);
  buttonState2 = digitalRead(buttonPin2);
  buttonState3 = digitalRead(buttonPin3);

 
 if (Serial.available() > 0)
  {string = "";}    
   while(Serial.available() > 0)
    {
     command = ((byte)Serial.read());
     if(command == ':')
     {
    break;
     }
     else
      {
        string += command;
     }
      delay(1);
   } 
 
  
 
  if (buttonState==HIGH || string=="c"){
  Child();
  Heart();
  
  randNumber = random(80, 99);
  lcd.setCursor(0,0);
  //Serial.print("BPM : ");
  //Serial.println(randNumber);
  //lcd.print("BPM : ");
  //lcd.print(randNumber);
  delay(1000);     
  } 
  
  if  (buttonState2==HIGH||string=="a"){
  Adult();
  Heart();
  
  randNumber = random(80, 99);
  lcd.setCursor(0,0);
  //Serial.print("BPM : ");
  //Serial.println(randNumber);
  //lcd.print("BPM : ");
  //lcd.print(randNumber); 
  delay(1000);
  }
  
  if (string=="off"){
  myservo.detach();
  if (string=="on"){

  }
    
  }

  
  
}
#2

up I need help on this :frowning:

#3

Hi,
What does your project do?
What is the servo supposed to do?
What is the input, output and display of your project?

Thanks.. Tom.. :slight_smile:

#4