Arduino Workshop (Basic Level)

Exercise 1

int buttonPin = 9;   //pin assignment for button 
int ledPin = 8; //pin assignment for led 
void setup(){ 
Serial.begin(9600);         // initialize serial communication at 9600 
pinMode(ledPin, OUTPUT);      // Use pin 8 for digital output
pinMode(buttonPin, INPUT_PULLUP); // Use pin 9 for digital input 
} 
void loop(){
boolean state;       // state either 1 or 0 
state  =  digitalRead(buttonPin);  // read state of pin 9

digitalWrite(ledPin , state);  // set state of pin 8 (LED)

Serial.println(state);       // print out the state 

delay(100);  // wait for a 100 millisecond 
}

Exercise 2a

// Convert the analog reading  which goes from (0 - 1023) to a voltage (0 - 5V)

void setup() 

{Serial.begin(9600);  //initialize serial communication at 9600 bits per second:
}
void loop() 

{
  int  sensorValue = analogRead(A0);    // read the input on analog pin 0:
  float voltage = sensorValue * (5.0 / 1023.0);   

  Serial.print(“analog=“);   
  Serial.print(sensorValue);     // print out the analog value you read:

  Serial.print(“ voltage=“);   
  Serial.println(voltage);     // print out the corresponding voltage
}

Exercise 2b

int ledPin = 9;

int potPin = A0;

void setup()

{

pinMode(ledPin, OUTPUT);    // Use pin 9 for analog output

pinMode(potPin, INPUT);    // Use pin 0 for analog input

Serial.begin(9600);         // initialize serial communication at 9600

}

void loop()

{

int value  =  analogRead(potPin );  // read analog of pin A0

digitalWrite(ledPin, HIGH);            // turn on led

delay(value);  // turn on time delay

digitalWrite(ledPin, LOW); // turn off led

delay(value);  // turn off time delay

Serial.println(value);       // print out the delay time in milliseconds

}

Exercise 2c

int ledPin = 9;

int potPin = A0;

void setup()

{

pinMode(ledPin, OUTPUT);    // Use pin 9 for analog output

pinMode(potPin, INPUT);    // Use pin 0 for analog input

Serial.begin(9600);         // initialize serial communication at 9600

// Use pin 9 as PWM analog output, PWM pins require no pin assign

}

void loop()

{

int value  =  analogRead(potPin);   // read analog of pin A0

int duty = value/4;             // convert the value to percentage

analogWrite(ledPin, duty);        // output PWM signal at pin 9

Serial.print(value);                // print out the value

Serial.print(“\t”);                // create spacebar

Serial.println(duty);       // print out the duty

delay(100);  // wait for a 100 millisecond

}

Exercise 2d

int photocellPin = 0; // the cell and 10K pulldown are connected to A0

int photocellReading; //the analog reading from the analog resistor divider

void setup(void) {

Serial.begin(9600);

}

void loop(void) {

photocellReading = analogRead(photocellPin);

Serial.print("Analog reading = ");

Serial.print(photocellReading); // the raw analog reading

if (photocellReading < 10) {

Serial.println(" - Dark");

} else if (photocellReading < 200) {

Serial.println(" - Dim");

} else if (photocellReading < 500) {

Serial.println(" - Light");

} else if (photocellReading < 800) {

Serial.println(" - Bright");

} else {

Serial.println(" - Very bright");

}

delay(1000);

}

Exercise 2e

int photocellPin = 0; // the cell and 10K pulldown are connected to A0

int photocellReading; //the analog reading from the analog resistor divider

float voltage; //the value

int LEDpin = 11;

int LEDbrightness;

void setup(void)

{

Serial.begin(9600);

}

void loop(void)

{

photocellReading = analogRead(photocellPin);

Serial.print("Analog reading = ");

Serial.println(photocellReading); // the raw analog reading

voltage= (photocellReading*5)/1023;

Serial.print("voltage = ");

Serial.println(voltage); // the raw analog reading

//photocellReading = 1023 - photocellReading;

LEDbrightness = map(voltage, 4, 1, 0, 255);

analogWrite(LEDpin, LEDbrightness);

delay(100);

}

Exercise 3a

void setup()

{

Serial.begin(9600);  // initialize serial communication at 9600 bits per second

Serial.println(“Text Display");   // print out the value you read:
delay(100); 

}

void loop()

{

 Serial.print(“My Name is:");   // print out the value you read:

 delay(1000);        // delay in between reads for stability

 Serial.print(“\t");   // tab the print

 Serial.println(“Put Your Name Here");   // print out the value you read:

 delay(1000);        // delay in between reads for stability

}

Exercise 3b

char incomingByte=0; 

void setup()

{

 Serial.begin(9600);      // opens serial port, sets data rate to 9600 bps

 Serial.println("Convert ASCII Char to others");

 delay(100);

}

void loop()  {

  if (Serial.available() > 0)

  {

   incomingByte = Serial.read();   // read the latest byte:

   Serial.print("ASCII Char:");

   Serial.println(incomingByte);   //print out the byte in Ascii Character

   Serial.print("HEX=");

   Serial.println(incomingByte,HEX);    //print out the byte in HEX

   Serial.print("Decimal=");

   Serial.println(incomingByte,DEC);  //print out the byte in decimal

   Serial.print("Binary=");

   Serial.println(incomingByte,BIN);  //print out the byte in binary

   Serial.print("\n");        //New line 

  }  

  delay(200);

}

Exercise 3c

int c;

int duty = 0;

int ledPin = 9;

void setup()

{

Serial.begin(9600);

Serial.setTimeout(10); // Serial.begin data read faster

}

void loop()

{

  if (Serial.available())

   {

   c = Serial.parseInt();

   }

 Serial.print(c);

 duty = map(c, 0, 9, 0, 255);   //mapping number 0 - 9 to 0-255

 analogWrite(ledPin, duty);       // output PWM signal at pin 9

 Serial.print("\t");                // create spacebar

 Serial.println(duty);       // print out the duty

 delay(100);                    // wait for 100 millisecond

}

Tugasan 1

int GREEN = 2;

int YELLOW = 3;

int RED = 4;

int DELAY_GREEN = 5000;

int DELAY_YELLOW = 2000;

int DELAY_RED = 5000;

void setup() {

pinMode(GREEN, OUTPUT);

pinMode(YELLOW, OUTPUT);

pinMode(RED, OUTPUT); }

void loop()

{

green_light();

delay(DELAY_GREEN);

yellow_light();

delay(DELAY_YELLOW);

red_light();

delay(DELAY_RED); }

void green_light() {

digitalWrite(GREEN, HIGH);

digitalWrite(YELLOW, LOW);

digitalWrite(RED, LOW); }

void yellow_light() {

digitalWrite(GREEN, LOW);

digitalWrite(YELLOW, HIGH);

digitalWrite(RED, LOW); }

void red_light() {

digitalWrite(GREEN, LOW);

digitalWrite(YELLOW, LOW);

digitalWrite(RED, HIGH);

}

Online Tutorial 1

Online Tutorial 2