Simple Pushbutton on off Project 2

 

 Simple Pushbutton on off Project 2

Arduino Uno - 01

Breadboard - 01

220 Ohm Resistors - 02

LED - 01

Push Button Switch - 01

Jumper wires

                                       Arduino Sketch

int inPin = 2;                                    // pin where we connect the button

int outPin = 3;                                 // pin where we connect the LED

int state = LOW;                             //current state of the output pin

int reading;                                     //current reading from the input pin

int previous = HIGH;                     //previous reading from the input pin

long time = 0;                                  // the last time the output pin was toggled

long debounce = 1000;                   // the debounce time, increase if the output flickers

void setup()

{

  pinMode(inPin, INPUT);             // define button as an input

  pinMode(outPin, OUTPUT);      // define LED as an output

}

void loop()

{

  reading = digitalRead(inPin);                                 // Button reading

    if (reading == HIGH && previous == LOW && millis()- time > debounce) {   // wait a sec for                                                                                                                            the hardware to stabilize  

    if (state == HIGH)                                              // *if button is pressed 

      state = LOW;

    else

      state = HIGH;

    time = millis();    

  }

  digitalWrite(outPin, state);                                 // *and turn on the LED

  previous = reading;

}