ezButton Library - Button Array Example

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B
1×Push Button
1×(Optional) Panel-mount Push Button
1×Jumper Wires
1×(Optional) 9V Power Adapter for Arduino
1×(Recommended) Screw Terminal Block Shield for Arduino Uno
1×(Optional) Transparent Acrylic Enclosure For Arduino Uno
Please note: These are Amazon affiliate links. If you buy the components through these links, We will get a commission at no extra cost to you. We appreciate it.

About Button

About Button Library

Wiring Diagram

Arduino Button Library Wiring Diagram

This image is created using Fritzing. Click to enlarge image

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 07.ButtonArray example
/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-button-library * * This example shows how to use array of button. */ #include <ezButton.h> const int BUTTON_NUM = 5; const int BUTTON_1_PIN = 2; const int BUTTON_2_PIN = 3; const int BUTTON_3_PIN = 4; const int BUTTON_4_PIN = 5; const int BUTTON_5_PIN = 6; ezButton buttonArray[] = { ezButton(BUTTON_1_PIN), ezButton(BUTTON_2_PIN), ezButton(BUTTON_3_PIN), ezButton(BUTTON_4_PIN), ezButton(BUTTON_5_PIN) }; void setup() { Serial.begin(9600); for (byte i = 0; i < BUTTON_NUM; i++) { buttonArray[i].setDebounceTime(50); // set debounce time to 50 milliseconds } } void loop() { for (byte i = 0; i < BUTTON_NUM; i++) buttonArray[i].loop(); // MUST call the loop() function first for (byte i = 0; i < BUTTON_NUM; i++) { if (buttonArray[i].isPressed()) { Serial.print("The button "); Serial.print(i + 1); Serial.println(" is pressed"); } if (buttonArray[i].isReleased()) { Serial.print("The button "); Serial.print(i + 1); Serial.println(" is released"); } } }
  • Click Upload button on Arduino IDE to upload code to Arduino
Arduino IDE Upload Code
  • Open Serial Monitor to see result:
  • Press and release the button one by one
The button 1 is pressed The button 1 is released The button 2 is pressed The button 2 is released The button 3 is pressed The button 3 is released The button 4 is pressed The button 4 is released The button 5 is pressed The button 5 is released
Autoscroll Show timestamp
Clear output
9600 baud  

Code Explanation

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

The Best Arduino Starter Kit