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Copy and paste the code that follows the line of asterisks:
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// Define some variables for later use ...
// - "const int" is used for values that won't chance in our sketch
// - we're going to make a constant integer called "ledPin" and assign it to the pin the LED is connected to
const int ledPin = 8; // substitute whatever pin you're using for 8
// - now make a constant integer called "buttonPin" and assign it to the pin the button (or switch) will be connected to
const int buttonPin = 5; // susbtitute whatever pin you're using for 5
// - "int" is used for values that will change in our sketch
// - we're going to make a integer variable called "buttonState" that we'll use to measure the button's state
int buttonState;
// Intialize the pins in the setup:
void setup()
{
pinMode(ledPin,OUTPUT);
pinMode(buttonPin,INPUT_PULLUP);
}
// Put the code to be run over and over in the loop:
void loop()
{
buttonState = digitalRead(buttonPin); // we're "reading" the voltage on in the input pin and assigning it to our variable called buttonState
// Since we did a digital read, there are only two possible values now for buttonState -- it's either HIGH or LOW
if(buttonState == HIGH)
{
digitalWrite(ledPin,HIGH);
}
else
{
digitalWrite(ledPin,LOW);
}
}
