ARDUINOFRAMEWORK

ARDUINO - REVIEW

Open http://arduino.cc/ to download the latest version of Arduino IDE

VerifyChecks your code for errors.

UploadCompiles your code and uploads it to the Arduino I/O board. See uploading below for details.

Note: If you are using an external programmer, you can hold down the "shift" key on your computer when using this icon. The text will change to "Upload using Programmer"

NewCreates a new sketch.

OpenPresents a menu of all the sketches in your sketchbook. Clicking one will open it within the current window.

Note: due to a bug in Java, this menu doesn't scroll; if you need to open a sketch late in the list, use the File | Sketchbook menu instead.

SaveSaves your sketch.

Serial MonitorOpens the serial monitor.

BARE MINIMUM CODE

void setup() { // put your setup code here, to run once:

}

void loop() { // put your main code here, to run repeatedly: }

DIGITAL READ SERIAL

The code for Digital Read• int pushButton = 2;

void setup() { Serial.begin(9600); pinMode(pushButton, INPUT);}

void loop() { // read the input pin: int buttonState = digitalRead(pushButton); // print out the state of the button: Serial.println(buttonState);}

ANALOG READ SERIAL

Code for Analog Read

• void setup() { Serial.begin(9600);}

void loop() { // read the input on analog pin 0: int sensorValue = analogRead(A0); // print out the value you read: Serial.println(sensorValue);}

FADING

Code for Fading•

int ledPin = 9; // LED connected to digital pin 9

void setup() { }

void loop() { for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) { analogWrite(ledPin, fadeValue); delay(30); }

for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) { analogWrite(ledPin, fadeValue); delay(30); } }

LCD Connect

Code#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pinsLiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() { // set up the LCD's number of columns and rows: lcd.begin(16, 2); // Print a message to the LCD. lcd.print("hello, world!");}

void loop() { // set the cursor to column 0, line 1 // (note: line 1 is the second row, since counting begins with 0): lcd.setCursor(0, 1); // print the number of seconds since reset: lcd.print(millis()/1000);}

Accelerometers

Code

const int groundpin = 18; // analog input pin 4 -- groundconst int powerpin = 19; // analog input pin 5 -- voltageconst int xpin = A3; // x-axis of the accelerometerconst int ypin = A2; // y-axisconst int zpin = A1; // z-axis (only on 3-axis models)

void setup(){ Serial.begin(9600); pinMode(groundpin, OUTPUT); pinMode(powerpin, OUTPUT); digitalWrite(groundpin, LOW); digitalWrite(powerpin, HIGH);}void loop(){ Serial.print(analogRead(xpin)); Serial.print("\t"); Serial.print(analogRead(ypin)); Serial.print("\t"); Serial.print(analogRead(zpin)); Serial.println(); delay(100);}

Another Accelerometer (Pulse-width based)

Code

• const int xPin = 2; // X output of the accelerometerconst int yPin = 3; // Y output of the accelerometer

void setup() { Serial.begin(9600); pinMode(xPin, INPUT); pinMode(yPin, INPUT);}

void loop() { // variables to read the pulse widths: int pulseX, pulseY; // variables to contain the resulting accelerations int accelerationX, accelerationY; // read pulse from x- and y-axes: pulseX = pulseIn(xPin,HIGH); pulseY = pulseIn(yPin,HIGH); // convert the pulse width into acceleration // accelerationX and accelerationY are in milli-g's: // earth's gravity is 1000 milli-g's, or 1g. accelerationX = ((pulseX / 10) - 500) * 8; accelerationY = ((pulseY / 10) - 500) * 8;

// print the acceleration Serial.print(accelerationX); // print a tab character: Serial.print("\t"); Serial.print(accelerationY); Serial.println();

delay(100);}

WEB CLIENT#include <SPI.h>#include <Ethernet.h>

// Enter a MAC address and IP address for your controller below.// The IP address will be dependent on your local network:byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };IPAddress ip(192,168,1, 177);

// Initialize the Ethernet server library// with the IP address and port you want to use // (port 80 is default for HTTP):EthernetServer server(80);

void setup() { Serial.begin(9600); // start the Ethernet connection and the server: Ethernet.begin(mac, ip); server.begin(); Serial.print("server is at "); Serial.println(Ethernet.localIP());}

void loop() { // listen for incoming clients EthernetClient client = server.available(); if (client) { Serial.println("new client"); // an http request ends with a blank line boolean currentLineIsBlank = true; while (client.connected()) { if (client.available()) { char c = client.read(); Serial.write(c); // if you've gotten to the end of the line (received a newline // character) and the line is blank, the http request has ended, // so you can send a reply if (c == '\n' && currentLineIsBlank) { // send a standard http response header client.println("HTTP/1.1 200 OK"); client.println("Content-Type: text/html"); client.println("Connnection: close"); client.println(); client.println("<!DOCTYPE HTML>"); client.println("<html>"); // add a meta refresh tag, so the browser pulls again every 5 seconds: client.println("<meta http-equiv=\"refresh\" content=\"5\">");

// output the value of each analog input pin for (int analogChannel = 0; analogChannel < 6; analogChannel++) { int sensorReading = analogRead(analogChannel); client.print("analog input "); client.print(analogChannel); client.print(" is "); client.print(sensorReading); client.println("<br />"); } client.println("</html>"); break; } if (c == '\n') { // you're starting a new line currentLineIsBlank = true; } else if (c != '\r') { // you've gotten a character on the current line currentLineIsBlank = false; } } } // give the web browser time to receive the data delay(1); // close the connection: client.stop(); Serial.println("client disonnected"); }}