LIGHT STAIR BUTTON

Stair light button

const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 10; // the number of the LED pin

// variables will change:
int buttonState = 0; // variable for reading the pushbutton status

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}
int on = 0;
unsigned long last = millis();
void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);

// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
if (millis() – last > 250) {
on = !on;
digitalWrite(ledPin, on ? HIGH : LOW);
}
last = millis();
}
}