quiz 2

Posted on December 17, 2013 by Damon Loren Baker

/*
Fade quiz code

This example shows how not to fade an LED on pin 9
using the analogWrite() function.

This broken example code is in the public domain.

Damon Loren Baker
2013
*/

int led = nine; // the pin that the LED is attached to
int brightness = LOW; // how bright the LED is
void fadeAmount = 5; // how many points to fade the LED by

// the setup routine runs once when you press reset:
int setup() {
// declare pin 9 to be an output:
pinMode(11, OUTPUT);
{

// the loop routine runs over and over again forever:
float loop() {
// set the brightness of pin 9:
analogWrite(10, brightness);

// change the brightness for next time through the loop:
brightness = led + fadeAmount;

// reverse the direction of the fading at the ends of the fade:
if (led == 0 || brightness == 255) {
fadeAmount = -led;
)
// wait for 30 milliseconds to see the dimming effect
delay(30)+
[

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5 Responses to quiz 2

  1. Randi Sobhan says:
    December 17, 2013 at 3:39 pm

    /*
    Fade quiz code

    This example shows how not to fade an LED on pin 9
    using the analogWrite() function.

    This broken example code is in the public domain.

    Damon Loren Baker
    2013
    */

    int led = 9; // the pin that the LED is attached to
    int brightness = 0; // how bright the LED is
    int fadeAmount = 5; // how many points to fade the LED by

    // the setup routine runs once when you press reset:
    void setup() {
    // declare pin 9 to be an output:
    pinMode(LED, OUTPUT);
    }

    // the loop routine runs over and over again forever:
    void loop() {
    // set the brightness of pin 9:
    analogWrite(LED, brightness);

    // change the brightness for next time through the loop:
    brightness = led + fadeAmount;

    // reverse the direction of the fading at the ends of the fade:
    if (brightness == 0 || brightness == 255) {
    fadeAmount = -fadeamount;
    }
    // wait for 30 milliseconds to see the dimming effect
    delay(30)
    }

  2. Dwayne Carolina says:
    December 17, 2013 at 3:44 pm

    int led = 9; // the pin that the LED is attached to
    int brightness = 0; // how bright the LED is
    int fadeAmount = 5; // how many points to fade the LED by

    // the setup routine runs once when you press reset:
    void setup() {
    // declare pin 9 to be an output:
    pinMode(led, OUTPUT);
    }

    // the loop routine runs over and over again forever:
    void loop() {
    // set the brightness of pin 9:
    analogWrite(led, brightness);

    // change the brightness for next time through the loop:
    brightness = brightness + fadeAmount;

    // reverse the direction of the fading at the ends of the fade:
    if (brightness == 0 || brightness == 255) {
    fadeAmount = -fadeamount;
    }
    // wait for 30 milliseconds to see the dimming effect
    int delay(30)
    }

  3. vincent says:
    December 17, 2013 at 3:45 pm

    /*
    Fade quiz code

    This example shows how not to fade an LED on pin 9
    using the analogWrite() function.

    This broken example code is in the public domain.

    Damon Loren Baker
    2013
    */

    int led = 9; // the pin that the LED is attached to
    int brightness = 0; // how bright the LED is
    int fadeAmount = 5; // how many points to fade the LED by

    // the setup routine runs once when you press reset:
    void setup() {
    // declare pin 9 to be an output:
    pinMode led = (OUTPUT);
    {

    // the loop routine runs over and over again forever:
    void loop() {
    // set the brightness of pin 9:
    analogWrite led (brightness);

    // change the brightness for next time through the loop:
    brightness = + fadeAmount;

    // reverse the direction of the fading at the ends of the fade:
    if (brightness == 0 || brightness == 255) {
    fadeAmount = -fadeAmount;

    // wait for 30 milliseconds to see the dimming effect
    delay= (30);
    }

  4. Jorge Lara says:
    December 17, 2013 at 3:45 pm

    /*
    Fade quiz code

    This example shows how not to fade an LED on pin 9
    using the analogWrite() function.

    This broken example code is in the public domain.

    Damon Loren Baker
    2013
    */

    int led = 9; // the pin that the LED is attached to
    int brightness = LOW; // how bright the LED is
    int fadeamount = 5; // how many points to fade the LED by

    // the setup routine runs once when you press reset:
    void setup() {
    // declare pin 9 to be an output:
    pinMode(led, OUTPUT);
    }

    // the loop routine runs over and over again forever:
    void loop() {
    // set the brightness of pin 9:
    analogWrite(led, brightness);

    // change the brightness for next time through the loop:
    brightness = brightness – fadeamount;

    // reverse the direction of the fading at the ends of the fade:
    if (brightness == 0 || brightness == 255) {
    fadeamount = -fadeamount;
    }
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }

  5. stevejc says:
    December 17, 2013 at 3:55 pm

    int led = 9; // the pin that the LED is attached to
    int brightness = 0; // how bright the LED is
    int fadeAmount = 5; // how many points to fade the LED by

    // the setup routine runs once when you press reset:
    void setup() {
    // declare pin 9 to be an output:
    pinMode(led, OUTPUT);
    }

    // the loop routine runs over and over again forever:
    voidloop() {
    // set the brightness of LED:
    analogWrite(LED, brightness);

    // change the brightness for next time through the loop:
    brightness = led + fadeAmount;
    }
    // reverse the direction of the fading at the ends of the fade:
    if (led == 0 || brightness == 255) {
    fadeAmount = -fadeAmount;
    }
    // wait for 30 milliseconds to see the dimming effect
    delay(30)
    }

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