Arduino Basic (PWM)

Exercise 1a

int x=0;

void setup()

{

Serial.begin(9600);

Serial.println("Initializing...");

delay(100);

}

void loop()

{

 Serial.print("This is pwm_value: "); 

 Serial.println(x);

 x=x+1;

 delay(1000);       

}

Exercise 2a

void setup()

{

  Serial.begin(9600);

}

void loop()

{ 

int sensorValue = analogRead(A0);

float voltage = sensorValue * (5.0 / 1023.0);

Serial.print("sensorValue=");

Serial.print(sensorValue);

Serial.print(" voltage=");

Serial.println(voltage);

delay(100);

}

Exercise 3a

int pwmPin = 9;

int potPin = A0;

void setup() 

{

pinMode(pwmPin, OUTPUT);    

pinMode(potPin, INPUT);    

Serial.begin(9600);

}

void loop() 

{ 

int value  =  analogRead(potPin);   

int duty = value/4;             

analogWrite(pwmPin, duty);        

Serial.print(value);                

Serial.print("\t"); 

Serial.println(duty);       

delay(100);  

}