Arduino Activities

arduino_code.md

Arduino Activities

1. Blinking Light

Check out the built-in examples.

2. Fading Light

Check out the built-in examples.

Blinking Lights

Here's the setup

Follow the diagram here.

Here's the code:

int ledDelay = 50; // delay by 50ms
int redPin = 9;
int bluePin = 11;


void setup() {
pinMode(redPin, OUTPUT);
pinMode(bluePin, OUTPUT);

}

void loop() {

digitalWrite(redPin, HIGH); // turn the red light on
delay(ledDelay); // wait 50 ms

digitalWrite(redPin, LOW); // turn the red light off
delay(ledDelay); // wait 50 ms

digitalWrite(redPin, HIGH); // turn the red light on
delay(ledDelay); // wait 50 ms

digitalWrite(redPin, LOW); // turn the red light off
delay(ledDelay); // wait 50 ms

digitalWrite(redPin, HIGH); // turn the red light on
delay(ledDelay); // wait 50 ms

digitalWrite(redPin, LOW); // turn the red light off
delay(ledDelay); // wait 50 ms

delay(100); // delay midpoint by 100ms

digitalWrite(bluePin, HIGH); // turn the blue light on
delay(ledDelay); // wait 50 ms

digitalWrite(bluePin, LOW); // turn the blue light off
delay(ledDelay); // wait 50 ms

digitalWrite(bluePin, HIGH); // turn the blue light on
delay(ledDelay); // wait 50 ms

digitalWrite(bluePin, LOW); // turn the blue light off
delay(ledDelay); // wait 50 ms

digitalWrite(bluePin, HIGH); // turn the blue light on
delay(ledDelay); // wait 50 ms

digitalWrite(bluePin, LOW); // turn the blue light off
delay(ledDelay); // wait 50 ms

}

Sequential Lights

Here's the setup:

Here's the code:

/* A simple program to sequentially turn on and turn off 3 LEDs */ 

int LED1 = 13;
int LED2 = 12;
int LED3 = 11;

void setup() {
   pinMode(LED1, OUTPUT);
   pinMode(LED2, OUTPUT);
   pinMode(LED3, OUTPUT);
}


void loop() {
  digitalWrite(LED1, HIGH);    // turn on LED1 
  delay(200);                  // wait for 200ms
  digitalWrite(LED2, HIGH);    // turn on LED2
  delay(200);                  // wait for 200ms       
  digitalWrite(LED3, HIGH);    // turn on LED3 
  delay(200);                  // wait for 200ms
  digitalWrite(LED1, LOW);     // turn off LED1
  delay(300);                  // wait for 300ms
  digitalWrite(LED2, LOW);     // turn off LED2
  delay(300);                  // wait for 300ms
  digitalWrite(LED3, LOW);     // turn off LED3
  delay(300);                  // wait for 300ms before running program all over again
}

Other Resources

• Getting Started
• Johnny 5
• Arduino Home