steadymate.ino

/*
CIPA Bracelet, Kelvin Cui 2019
*/

#include <SoftwareSerial.h>

int rLED = 5;
int yLED = 6;

int buzzer = 9;

int thermistor = 0;

int vibration = 7;
String input;
float T;


void setup() {
  pinMode(rLED,OUTPUT);
  pinMode(yLED,OUTPUT);
  pinMode(buzzer,OUTPUT);
  pinMode(vibration,OUTPUT);
  Serial.begin(9600);

  
}

void loop() {
  T = thermistorRead(thermistor);
  Serial.println(T);
  if ((T > 36) and (T <= 40)) {
    caution();
  }
  else if (T > 40) {
    Serial.println(1000);
    critical();
  }
  delay(1000);
  
}

  


void caution(){
  analogWrite(yLED,255);
  digitalWrite(vibration,HIGH);
  tone(buzzer,5000);
  delay(250);
  
  analogWrite(yLED,0);

  noTone(buzzer);
  delay(250);
  
  analogWrite(yLED,255);
  tone(buzzer,5000);
  delay(250);
  
  analogWrite(yLED,0);
  digitalWrite(vibration,LOW);
  noTone(buzzer);
  delay(750);
  
}

void critical() {
  analogWrite(rLED,255);
  digitalWrite(vibration,HIGH);
  tone(buzzer,7000);
  delay(100);
  
  analogWrite(rLED,0);
  noTone(buzzer);
  delay(100);
  
  analogWrite(rLED,255);
  tone(buzzer,7000);
  delay(100);
  
  analogWrite(rLED,0);
  noTone(buzzer);
  delay(100);
  
  analogWrite(rLED,255);
  tone(buzzer,7000);
  delay(100);
  
  analogWrite(rLED,0);
  noTone(buzzer);
  digitalWrite(vibration,LOW);
  delay(200);
  


  
  
}

float thermistorRead(int Tpin) {
  int Vo;
  float logRt,Rt,T;
  float R = 9870; // fixed resistance, measured with multimeter
// c1, c2, c3 are calibration coefficients for a particular thermistor
  float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;
  Vo = analogRead(Tpin);
  Rt = R*( 1024.0 / float(Vo) - 1.0 );
  logRt = log(Rt);
  T = ( 1.0 / (c1 + c2*logRt + c3*logRt*logRt*logRt ) ) - 267.15;
return T;
}