How to create, open or Save the Sketch?

  1. When you open the Arduino IDE for the first time or create a new sketch, you will see a page like this, where the Arduino IDE creates a new file for you, which is called a “sketch”.

    ../_images/sp221014_173458.png

    These sketch files have a regular temporary name, from which you can tell the date the file was created. sketch_oct14a.ino means October 14th first sketch, .ino is the file format of this sketch.

  2. Now let’s try to create a new sketch. Copy the following code into the Arduino IDE to replace the original code.

    ../_images/create1.png 
    void setup() {
    // put your setup code here, to run once:
    pinMode(13,OUTPUT);
}

void loop() {
    // put your main code here, to run repeatedly:
    digitalWrite(13,HIGH);
    delay(500);
    digitalWrite(13,LOW);
    delay(500);
}

  3. Press Ctrl+S or click File -> Save. The Sketch is saved in: C:\Users\{your_user}\Documents\Arduino by default, you can rename it or find a new path to save it.

    ../_images/create2.png

  4. After successful saving, you will see that the name in the Arduino IDE has been updated.

    ../_images/create3.png

Please continue with the next section to learn how to upload this created sketch to your Arduino board.