Living Architecture Fall 2009 Pratt

1.

int pinMode(potPin, INPUT);

int potpin = 2

void setup()                    // run once, when the sketch starts

{

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

 pinMode(potPin, INPUT);

}

void loop()                     // run over and over again

{

  Serial.println(analogRead(ledPin));

} 

Result: the value does not change on the bottom of the screen.

2.

int potpin = 2

void setup()                     // run once, when the sketch starts

{

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

 digitalWrite(potPin+14,LOW); // make sure that pull up resistor is disabled -- this is usually not necessary

 pinMode(potPin+14, INPUT); // set input mode for ADC pin potPin -- this is usually not necessary

}

void loop()                       // run over and over again

{

  Serial.println(analogRead(potPin));

}

Result: no changes

3.

int ledPin = 13;

int potPin = 2;    // connected to speaker output pc

int val = 0;       // variable to store the value coming from the sensor

void setup() {

  pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT

}

void loop() {

  val = analogRead(potPin);    // read the value from the sensor or audio input

  digitalWrite(ledPin, HIGH);

  delay(val);

  digitalWrite(ledPin, LOW);

  delay(val);                  // stop the program for some time

}

Result: after modifying the script slightly we see the led respond to loud noise, but the led stays on and blinks even if no noise is made. Tried to modify the script further, no changes.

4.

int ledPin = 13;

int potPin = 2;    // connected to speaker output pc

int val = 0;       // variable to store the value coming from the sensor

int avg = 0;

void setup() {

  pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT

  pinMode(potPin, INPUT);

}

void loop() {

  val = analogRead(potPin);    // read the value from the sensor or audio input

  avg = (avg * 127L + val) / 128;  // *duck* i dont know what kind of average this is... :-)

  digitalWrite(ledPin, avg > 100 ? HIGH : LOW); // use lower border for more HIGH-time

  delay(10); // use lower delay, if it doesnt flicker enough

}

Result: no changes