The task here is to blink the light three times after the button is pressed. I made the assumption that a half second on and a half second off would constitute a blink
#define LED 13 //pin for LED
#define BUTTON 7 //pin for Button
int val = 0; //set the variable to 0
int state = 0; //set trigger to 0
void setup(){
pinMode(LED, OUTPUT); //set direction out
pinMode(BUTTON, INPUT); //set direction in
}
void loop(){
val =digitalRead(BUTTON); //read the button
if (val == HIGH){ //if pressed
for (int i = 0; i < 3; i++) {
digitalWrite(LED, HIGH);
delay(500);
digitalWrite(LED, LOW);
delay(500);
}
}
}
I set out to use state as my counter but when researching how to do a “for next” loop I came across an example where they incorporated the counter “i” into the programming.
The start defines the pins or Data direction ( this was easy on the BBC computers -
The loop reads the button compares that to a value (1) and if high goes into the for next loop where it light on -