 int draw_state = 0;
 
 //SOS button
+static int buttonSOS = 7;
 
 
 //pulse sensor variables

  
}



void setup(void) {
  pinMode(button, INPUT_PULLUP);
  pinMode(buttonSOS, INPUT_PULLUP);
  Serial.begin(9600);
  BTserial.begin(9600); //start the bluetooth connection

