Arduino and basic electronics

Open up the sketch from level 1.

Save your Arduino sketch. Name it C3-level2.

In your sketch, there’s a line that says

pinMode(9, OUTPUT); // set up pin 9 as an output.

The first “argument” to the pinMode() function is the pin number. Change this from 9 to 11.

In the comment, change the pin number from 9 to 1 too, so that it still matches what the sketch is doing.

I can give you a hint if you need it, but have a go by yourself first.

Your entire setup() function should look like this:

void setup() {
    pinMode(11, OUTPUT);    // set up pin 11 as an output.
}

In your sketch, there are two calls to digitalWrite(). Change the pin number in both of them from 9 to 11.

I can give you a hint if you need it, but have a go by yourself first.

Your entire loop() function should look like this:

void loop() {
    digitalWrite(11, HIGH); // turn the LED on
    delay(100);             // wait for 1 tenth second
    digitalWrite(11, LOW);  // turn the LED off
    delay(1000);            // wait for 1 second
}

Now upload the sketch to an Arduino that has a Thinkershield attached.

Activity C3 — Digital outputs

Level 2 — Use a different digital output

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