Task 34 - Random Numbers

// Adam Randall - Random Numbers Program, generates 100 random numbers between 1 and 10

long randNumber;

void setup(){
Serial.begin(9600);
randomSeed(analogRead(0));
for (int i=0; i<100; i++){
randNumber = random(0, 10);
Serial.println(randNumber);
delay(500);
}
}

void loop() {
}

Task 29 - Resources

http://http//webzone.k3.mah.se/projects/arduino-workshop/projects/arduino_meets_processing/instructions/index.html

This website has some great arduino projects and has pictures of the arduino setup and the circuit board, so the user can create it.


http://http//www.practicalarduino.com/news/id/461

The above link is to website about an Arduino book called: Pratical Arduino. Looks like it would be a good book to own to make some interesting projects with.


http://http://falconphysics.blogspot.com/2009/01/arduino-in-high-school-electronics.html

This website is a techers blog about teaching and using the arduinos. It seems like a very cool idea and I wish this happened in my highschool. Even the video of the robot is cool.

LED Project - Assignment 1

// Melody by Adam Randall
// This is a program designed to output LED's when notes are played
// through a speaker. Below is the code used.

int speakerPin = 12; // output Speaker
int led1 = 9; // output LED1
int led2 = 8; // output LED2
int led3 = 7; // output LED3
int led4 = 6; // output LED4
int led5 = 5; // output LED5
int led6 = 4; // output LED6

int length = 24; // the number of notes
char notes[] = "ggcGfcg ggcGfcg bcAcAbA "; // a space represents a rest
int beats[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
int tempo = 300;

void playTone(int tone, int duration) {
for (long i = 0; i < duration * 1000L; i += tone * 2) {
digitalWrite(speakerPin, HIGH); // speaker on
delayMicroseconds(tone); // delay
digitalWrite(speakerPin, LOW); // spaker off
delayMicroseconds(tone);
}
}

void playNote(char note, int duration) {
char names[] = {'d', 'e', 'f', 'g', 'a', 'b', 'c', 'G', 'A'}; // notes
int tones[] = {587, 659, 698, 784, 880, 988, 1047, 831, 932 }; // frequency

if (note == 'c') {
digitalWrite (led1, HIGH); // LED1 on
delay (50); //delay
digitalWrite (led1, LOW); // LED1 off
}
else if (note == 'g') {
digitalWrite (led2, HIGH); // LED2 on
delay (50); //delay
digitalWrite (led2, LOW); // LED2 off
}
else if (note == 'G') {
digitalWrite (led3, HIGH); // LED3 on
delay (50); //delay
digitalWrite (led3, LOW); // LED3 off
}
else if (note == 'b') {
digitalWrite (led4, HIGH); // LED4 on
delay (50); //delay
digitalWrite (led4, LOW); // LED4 off
}
else if (note == 'A') {
digitalWrite (led5, HIGH); // LED5 on
delay (50); //delay
digitalWrite (led5, LOW); // LED5 off
}
else if (note == 'f') {
digitalWrite (led6, HIGH); // LED6 on
delay (50); //delay
digitalWrite (led6, LOW); // LED6 off
}

// play the tone corresponding to the note name
for (int i = 0; i < 20; i++) {
if (names[i] == note) {

playTone(tones[i], duration);
}
}
}

void setup() {
pinMode(speakerPin, OUTPUT);
}

void loop() {
for (int i = 0; i < length; i++) {
if (notes[i] == ' ') {
delay(beats[i] * tempo); // rest
} else {
playNote(notes[i], beats[i] * tempo);
}

// pause between notes
delay(tempo / 2);
}
}



Below is a video of th assignment at work:

Task 32 - Push Button Project + Serial output stating the condition of LED and Button.

const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin

// variables will change:
int buttonState = 0; // variable for reading the pushbutton status

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
Serial.begin(9600);

}

void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);

// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
Serial.println("Button Pressed, LED on");//
}
else {
// turn LED off:
digitalWrite(ledPin, LOW);
Serial.println("Button Pressed, LED off");
}
}

Task 31 - Reversed Push Button Project

const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin

// variables will change:
int buttonState = 0; // variable for reading the pushbutton status

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}

void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);

// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED off:
digitalWrite(ledPin, LOW);
}
else {
// turn LED on:
digitalWrite(ledPin, HIGH);
}
}

Task 30 - Push Button Project

const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin

// variables will change:
int buttonState = 0; // variable for reading the pushbutton status

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}

void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);

// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
}
else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}

Key Words Glossary

setup() - Used to initialised varibles as the start of a program eg pinMode(buttonPin, INPUT);

loop() - Loops anything you state on the board eg void loop()
{
if (digitalRead(buttonPin) == HIGH)
serialWrite('H');
else
serialWrite('L');

delay(1000);
}


digitalWrite - DigitalWrite is used to output something such as an LED as HIGH (on) or LOW (off) eg digitalWrite(ledPin, HIGH);

analogRead()- Reads the value from the specified analog pin eg int analogPin = 3; // potentiometer wiper (middle terminal) connected to analog pin 3
// outside leads to ground and +5V
int val = 0; // variable to store the value read

void setup()
{
Serial.begin(9600); // setup serial
}

void loop()
{
val = analogRead(analogPin); // read the input pin
Serial.println(val); // debug value
}


Serial.print()- Prints data to the serial port as human-readable ASCII text. eg •Serial.print("Hello world.") gives "Hello world."

Serial.println()- Prints data to the serial port as human-readable ASCII text followed by a carriage return character (ASCII 13, or '\r') and a newline character (ASCII 10, or '\n'). eg Serial.println("Hello world.") followed by a new line

pinMode()- Configures the specified pin to behave either as an input or an output. eg pinMode(ledPin, OUTPUT); // sets the digital pin as output


digitalRead() - Reads the value from a specified digital pin, either HIGH or LOW. eg
int ledPin = 13; // LED connected to digital pin 13
int inPin = 7; // pushbutton connected to digital pin 7
int val = 0; // variable to store the read value

void setup()
{
pinMode(ledPin, OUTPUT); // sets the digital pin 13 as output
pinMode(inPin, INPUT); // sets the digital pin 7 as input
}

void loop()
{
val = digitalRead(inPin); // read the input pin
digitalWrite(ledPin, val); // sets the LED to the button's value
}