My Blink
int ledPin = 13; // LED connected to digital pin 13
void setup() // run once, when the sketch starts
{
pinMode(ledPin, OUTPUT); // sets the digital pin as output
}
void loop() // run over and over again
{
digitalWrite(ledPin, HIGH); // sets the LED on
delay(500); // waits for a second
digitalWrite(ledPin, LOW); // sets the LED off
delay(900); // waits for a second
}
Alternating Green and Red
int redPin = 12; // Red LED connected to digital pin 12
int greenPin = 11; // Green LED connected to digital pin 11
void setup() // run once, when the sketch starts
{
pinMode(redPin, OUTPUT); // sets the digital pin as output
pinMode(greenPin, OUTPUT); // sets the digital pin as output
}
void loop() // run over and over again
{
digitalWrite(redPin, HIGH); // sets the Red LED on
digitalWrite(greenPin, LOW); // sets the Green LED on
delay(500); // waits for half a second
digitalWrite(redPin, LOW); // sets the Red LED off
digitalWrite(greenPin, HIGH); // sets the Green LED off
delay(500); // waits for half a second
}
int redPin = 12; // Red LED connected to digital pin 12
int greenPin = 11; // Green LED connected to digital pin 11
int bluePin = 10;
void setup() // run once, when the sketch starts
{
pinMode(redPin, OUTPUT); // sets the digital pin as output
pinMode(greenPin, OUTPUT); // sets the digital pin as output
pinMode(bluePin, OUTPUT);
}
void loop() // run over and over again
{
digitalWrite(redPin, HIGH); // sets the Red LED on
digitalWrite(greenPin, HIGH); // sets the Green LED on
digitalWrite(bluePin, HIGH);
delay(500); // waits for half a second
digitalWrite(redPin, LOW); // sets the Red LED off
digitalWrite(greenPin, LOW); // sets the Green LED off
digitalWrite(bluePin, LOW);
delay(500); // waits for half a second
}
Color Mixing
int redPin = 12; // Red LED connected to digital pin 12
int greenPin = 11; // Green LED connected to digital pin 11
int bluePin = 10;
void setup() // run once, when the sketch starts
{
pinMode(redPin, OUTPUT); // sets the digital pin as output
pinMode(greenPin, OUTPUT); // sets the digital pin as output
pinMode(bluePin, OUTPUT);
}
void loop() // run over and over again
{
digitalWrite(redPin, HIGH); // sets the Red LED on
delay(500); // waits for half a second
digitalWrite(redPin, LOW); // sets the Red LED on
delay(500); // waits for half a second
digitalWrite(redPin, HIGH); // sets the Red LED on
digitalWrite(bluePin, HIGH);
delay(500); // waits for half a second
digitalWrite(redPin, LOW); // sets the Red LED on
digitalWrite(bluePin, LOW);
delay(500); // waits for half a second
digitalWrite(bluePin, HIGH);
delay(500); // waits for half a second
digitalWrite(bluePin, LOW);
delay(500); // waits for half a second
digitalWrite(greenPin, HIGH); // sets the Green LED off
digitalWrite(bluePin, HIGH);
delay(500); // waits for half a second
digitalWrite(greenPin, LOW); // sets the Green LED off
digitalWrite(bluePin, LOW);
delay(500); // waits for half a second
digitalWrite(greenPin, HIGH); // sets the Green LED off
delay(500); // waits for half a second
digitalWrite(greenPin, LOW); // sets the Green LED off
delay(500); // waits for half a second
digitalWrite(greenPin, HIGH); // sets the Green LED off
digitalWrite(redPin, HIGH); // sets the Red LED on
delay(500); // waits for half a second
digitalWrite(greenPin, LOW); // sets the Green LED off
digitalWrite(redPin, LOW); // sets the Red LED on
delay(500); // waits for half a second
}
HelloWorld
void setup() // run once, when the sketch starts
{
Serial.begin(9600); // set up Serial library at 9600 bps
Serial.println(“Hello world!”); // prints hello with ending line break
}
void loop() // run over and over again
{
// do nothing!
}
HelloWorld 20 Times with Delay
void setup() // run once, when the sketch starts
{
Serial.begin(9600); // set up Serial library at 9600 bps
}
void loop() // run over and over again
{
Serial.println(“Hello world!”); // prints hello with ending line break
delay(1000);
}
DriveCalc
/*
* Drive size calculator!
*/
int drive_gb = 100;
long drive_mb;
long drive_kb;
long real_drive_mb;
long real_drive_kb;
void setup() // run once, when the sketch starts
{
Serial.begin(9600); // set up Serial library at 9600 bps
Serial.print(“Your HD is “);
Serial.print(drive_gb);
Serial.println(” GB large.”);
drive_mb = drive_gb;
drive_mb = drive_mb * 1024;
drive_kb = drive_mb * 1024;
Serial.print(“In theory, it can store “);
Serial.print(drive_mb);
Serial.print(” Megabytes, “);
Serial.print(drive_kb);
Serial.println(” Kilobytes.”);
real_drive_mb = drive_gb;
real_drive_mb = real_drive_mb * 1000;
real_drive_kb = real_drive_mb * 1000;
Serial.print(“But it really only stores “);
Serial.print(real_drive_mb);
Serial.print(” Megabytes, “);
Serial.print(real_drive_kb);
Serial.println(” Kilobytes.”);
Serial.print(“You are missing “);
Serial.print(drive_kb – real_drive_kb);
Serial.println(” Kilobytes!”);
}
void loop() // run over and over again
{
}
Turning on LED with Switch
