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ezButton Library - Button Array Example
Hardware Required
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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 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
- Open Serial Monitor to see result:
- Press and release the button one by one
COM6
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
Clear output
9600 baud
Newline
Code Explanation
Read the line-by-line explanation in comment lines of source code!