Today I learned how to make a light with a button! Check it out:
I also managed to code a one button to brighten an LED, and another button to shut off the same led..
Here’s the code:
// constants won’t change. They’re used here to
// set pin numbers:
const int buttonPin[] = {2,3}; // the number of the pushbutton pins
const int ledPin = 13; // 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:
for(int x=0; x<2; x++)
{
pinMode(buttonPin[x], INPUT);
}
}
void loop(){
// read the state of the pushbutton value:
for(int x=0; x<2; x++)
{
buttonState = digitalRead(buttonPin[x]);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH && buttonPin[x] == 2) {
// turn LED on:
digitalWrite(ledPin, HIGH);
}
if (buttonState == HIGH && buttonPin[x] == 3) {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}
}