how can i add a date with the value of sensor in my serial monitor

Question

I want to display the date on my serial monitor with the value of sensor

heres the code:

int redpin= 13;
int greenled = 7;
int buzzer = 11;
int gasA0 = A0;
// Your threshold value
int sensorThres = 400;
int date = date;


void setup() {
  pinMode(greenled, OUTPUT);
  pinMode(redpin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(gasA0, INPUT); 
  Serial.begin(9600);

}


void loop() {
int analogSensor = analogRead(gasA0);

  Serial.print(" ");
  Serial.println(analogSensor);
  
  // Checks if it has reached the threshold value
  if (analogSensor > sensorThres)
  
  {
    digitalWrite(greenled,LOW);//green led stay
    digitalWrite(redpin,HIGH); //turns on led and buzzer
    tone(buzzer,100);
  }
  else
  {
    digitalWrite(redpin,LOW); //turns off led and buzzer
    digitalWrite(greenled,HIGH);//green led stay
    noTone(buzzer);
   
  }
  
delay(400);
}

I try to create a device that will detect a gas but I want to display the current date in my serial monitor continuously

Answer 1

The time value is prepended by the Arduino Serial Monitor to every line received from Arduino. If you copy the lines from Serial Monitor to Excel, just add a column with the date in Excel directly.

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If you want the Arduino to print the timestamp, then you can use the Arduino Time library and some source of time. The source of time can be manual entry, a RTC module or with a.networking module you could retrieve time from a time server. See the examples of the Time library