ezButton Library - Single Button Example

Hardware Required

1	×	Arduino UNO or Genuino UNO
1	×	USB 2.0 cable type A/B
1	×	Button
1	×	Breadboard
2	×	Jumper Wires

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About Button

Refer to Arduino - Button tutorial

About Button Library

Refer to Arduino - ezButton Library Reference

Wiring Diagram

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Arduino Code

Quick Steps

Install ezButton library. See How To
Connect Arduino to PC via USB cable
Open Arduino IDE, select the right board and port
On Arduino IDE, Go to File Examples ezButton 01.SingleButton example

/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-button-library * * This example reads the state of a button without debounce and print it to Serial Monitor. */ #include <ezButton.h> ezButton button(7); // create ezButton object that attach to pin 7; void setup() { Serial.begin(9600); } void loop() { button.loop(); // MUST call the loop() function first int btnState = button.getState(); Serial.println(btnState); }

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Open Serial Monitor to see result:
Press and release the button

COM6

Send

1 1 1 0 0 0 0 1 1

Autoscroll Show timestamp

Clear output

9600 baud

Newline

※ NOTE THAT:

Since the ezButton library used the internal pull-up resistor, the state will be HIGH (1) when no press, and LOW (0) when pressed.

Code Explanation

Read the line-by-line explanation in comment lines of source code!

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