ezLED Library - LED Toggle Example

This tutorial shows how to use an example of ezLED library that toggles a LED each time a button is pressed.

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B
1×LED
1×220 ohm resistor
1×Button
1×Breadboard
2×Jumper Wires
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About LED

About ezLED Library

Wiring Diagram

Arduino LED Library Wiring Diagram

Image is developed using Fritzing. Click to enlarge image

Arduino Code

Quick Steps

  • Install ezLED 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 ezLED LEDToggle example
/* Created by ArduinoGetStarted.com This example code is in the public domain Tutorial page: https://arduinogetstarted.com/library/led/example/arduino-led-toggle This example turn ON/OFF led according to state of button. */ #include <ezButton.h> // ezButton library https://arduinogetstarted.com/tutorials/arduino-button-library #include <ezLED.h> // ezLED library ezButton button(7); // create a button object that attach to pin 7 ezLED led(3); // create a LED object that attach to pin 3 void setup() { Serial.begin(9600); button.setDebounceTime(50); // set debounce time to 50ms } void loop() { button.loop(); // MUST call the loop() function first led.loop(); // MUST call the loop() function first if (button.isPressed()) { led.toggle(); // toggle immediately //led.toggle(1000); // toggle after 1 second } if (led.getOnOff() == LED_ON) Serial.println("LED is ON"); else Serial.println("LED is OFF"); }
  • Click Upload button on Arduino IDE to upload code to Arduino
  • Arduino IDE Upload Code
  • Open Serial Monitor to see result:
  • COM6
    Send
    LED is OFF LED is OFF LED is OFF LED is OFF LED is OFF LED is ON LED is ON LED is ON LED is ON
    Autoscroll Show timestamp
    Clear output
    9600 baud  
    Newline  

Code Explanation

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

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