How to add a header file on Arduino IDE

how can we create and add a header file headerfile.h in Arduino IDE to call the header file as

#include "headerfile.h"


The below example shows how to create the "pitches.h" file On Arduino IDE:

Piezo Buzzer adds Pitches

Buy Arduino

1 × Arduino UNO Buy on Amazon
1 × USB 2.0 cable type A/B Buy on Amazon
1 × Jumper Wires Buy on Amazon
Please note: These are affiliate links. If you buy the components through these links, We may get a commission at no extra cost to you. We appreciate it.

The Best Arduino Starter Kit