How to write data to a text file on Arduino

Question

I have some position data continually coming in and I am currently printing it to the serial.

Say I have the string \"5\" and want to print that to a text file, \"my

Answer 1

U have to Use serial-lib for this

Serial.begin(9600);

Write your sensor values to the serial interface using

Serial.println(value);

in your loop method

on the processing side use a PrintWriter to write the data read from the serial port to a file

import processing.serial.*;
Serial mySerial;
PrintWriter output;
void setup() {
   mySerial = new Serial( this, Serial.list()[0], 9600 );
   output = createWriter( "data.txt" );
}
void draw() {
    if (mySerial.available() > 0 ) {
         String value = mySerial.readString();
         if ( value != null ) {
              output.println( value );
         }
    }
}

void keyPressed() {
    output.flush();  // Writes the remaining data to the file
    output.close();  // Finishes the file
    exit();  // Stops the program
}