Arduino

Arduino is an open-source physical computing platform designed to make experimenting with electronics more fun and intuitive. Arduino has its own unique, simplified programming language, a vast support network, and thousands of potential uses, making it the perfect platform for both beginner and advanced DIY enthusiasts.

Circuit 1- blinking LED

1 second blink

void loop()

{

digitalWrite(13, HIGH); // Turn on the LED

delay(1000); // Wait for one second

digitalWrite(13, LOW); // Turn off the LED

delay(1000); // Wait for one second

}

product

0.5 second blink

void loop()

{

digitalWrite(13, HIGH); // Turn on the LED

delay(500); // Wait for one second

digitalWrite(13, LOW); // Turn off the LED

delay(500); // Wait for one second

}

Circuit 2

product

A potentiometer is a variable resistor, as you turn the knob the voltage increases or decreases and the voltage goes from 0 to 5 volts when hooked up to a five volt circuit.

Circuit 3

product

const int RED_PIN = 9;

const int GREEN_PIN = 10;

const int BLUE_PIN = 11;

int DISPLAY_TIME = 100; // In milliseconds

void setup()

{

pinMode(RED_PIN, OUTPUT);

pinMode(GREEN_PIN, OUTPUT);

pinMode(BLUE_PIN, OUTPUT);

}

void loop()

{

mainColors();

showSpectrum();

}

void mainColors()

{

delay(1000); // Red (turn just the red LED on):

digitalWrite(RED_PIN, HIGH);

digitalWrite(GREEN_PIN, LOW);

digitalWrite(BLUE_PIN, LOW);

delay(1000); // Green (turn just the green LED on):

digitalWrite(RED_PIN, LOW);

digitalWrite(GREEN_PIN, HIGH);

digitalWrite(BLUE_PIN, LOW);

delay(1000); // Blue (turn just the blue LED on):

digitalWrite(RED_PIN, LOW);

digitalWrite(GREEN_PIN, LOW);

digitalWrite(BLUE_PIN, HIGH);

delay(1000) // Yellow (turn red and green on):

digitalWrite(RED_PIN, HIGH);

digitalWrite(GREEN_PIN, HIGH);

digitalWrite(BLUE_PIN, LOW);

delay(1000); // Cyan (turn green and blue on):

digitalWrite(RED_PIN, LOW);

digitalWrite(GREEN_PIN, HIGH);

digitalWrite(BLUE_PIN, HIGH);

delay(1000); // Purple (turn red and blue on):

digitalWrite(RED_PIN, HIGH);

digitalWrite(GREEN_PIN, LOW);

digitalWrite(BLUE_PIN, HIGH);

delay(1000); // White (turn all the LEDs on):

digitalWrite(RED_PIN, HIGH);

digitalWrite(GREEN_PIN, HIGH);

digitalWrite(BLUE_PIN, HIGH);

delay(1000);

}

Circuit 4-making 8 LEDS dance

//oneAfterAnotherNoLoop(); // Light up all the LEDs in turn

//oneOnAtATime(); // Turn on one LED at a time,

// scrolling down the line

//randomLED(); // Blink LED randomly

This function will light one LED, delay for delayTime, then light

the next LED, and repeat until all the LEDs are on. It will then

turn them off in the reverse order.

void oneAfterAnotherNoLoop()

{

int delayTime = 100; // time (milliseconds) to pause between LEDs

// turn all the LEDs on:

digitalWrite(ledPins[0], HIGH); //Turns on LED #0 (pin 2)