ezButton Library - Button Array Example

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B
1×Jumper Wires
1×(Optional) 9V Power Adapter for Arduino
1×(Optional) Screw Terminal Block Shield for Arduino

One of the following breadboard:

1×Full-sized 830-Point Breadboard
1×Half-sized 400-point Breadboard
1×Mini-sized 170-point Breadboard
1×All-sized Breadboard Kit
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About Button

About Button Library

Wiring Diagram


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!

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