ezOutput Library - On Off Example

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B
1×220 ohm resistor
1×Jumper Wires
1×(Optional) 9V Power Adapter for Arduino
1×(Optional) Screw Terminal Block Shield for Arduino Uno
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About LED

About ezOutput Library

Wiring Diagram

Arduino Output Library Wiring Diagram

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Arduino Code

Quick Steps

  • Install ezOutput 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 ezOutput 01.OnOff example
/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-output-library * * This example turn ON/OFF led according to state of button. */ #include <ezOutput.h> // ezOutput library const int BUTTON_PIN = 7; ezOutput led(9); // create ezOutput object that attach to pin 9; void setup() { Serial.begin(9600); pinMode(BUTTON_PIN, INPUT_PULLUP); } void loop() { int buttonState = digitalRead(BUTTON_PIN); if(buttonState == HIGH) led.high(); else led.low(); Serial.println(led.getState()); }
  • Click Upload button on Arduino IDE to upload code to Arduino
Arduino IDE Upload Code
  • Press and release the button
  • Open Serial Monitor to see result:
Autoscroll Show timestamp
Clear output
9600 baud  
  • See LED's state

Code Explanation

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

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