01 / Blink

DESGN-650-01 Mechatronics, Spring 2016, CCA

Instructor: Michael Shiloh

- -

1/01 Basic Blink Example

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin 13 as an output.

pinMode(13, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)

delay(1000); // wait for a second

digitalWrite(13, LOW); // turn the LED off by making the voltage LOW

delay(1000); // wait for a second

}

- -

1/02 Blinking Rate Change

To make LED light blink faster,

I changed delay rate from 1000 to 100!

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin 13 as an output.

pinMode(13, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(13, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

- -

1/03 Connect LED with a solderless breadboard with 1K ohm resistor via Pin 13

- -

1/04 Connect LED with a solderless breadboard with 1K ohm resistor via Pin 11

As I need to shift an output from Pin 13 to Pin 11,

I edited pinMode and also digitalWrite from 13 to 11.

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin 13 as an output.

pinMode(11, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(11, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(11, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

}

- -

1/05 Add the second LED

2 lights blink alternately :

I added one more light on Pin 12,

then added another pinMode and also copied another set of void loop.

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin 13 as an output.

pinMode(11, OUTPUT);

pinMode(12, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(11, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(11, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

digitalWrite(12, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(12, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

}

2 lights blink simultaneously :

I only connected the breadboardwith Pin 11, however, I need to add more set of LED and a resistor.

[Debug]

In this case, I have brought a wrong resistor for the second light, so the both lights blink with lower brightness.

- -

1/06 AnalogReadSerial

// the setup routine runs once when you press reset:

void setup() {

// initialize serial communication at 9600 bits per second:

Serial.begin(9600);

}

// the loop routine runs over and over again forever:

void loop() {

// read the input on analog pin 0:

int sensorValue = analogRead(A0);

// print out the value you read:

Serial.println(sensorValue);

delay(1); // delay in between reads for stability

}

- -

1/07 AnalogInput

*/

int sensorPin = A0; // select the input pin for the potentiometer

int ledPin = 11; // select the pin for the LED

//int ledPin = 11; // select the pin for the LED

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

void setup() {

// declare the ledPin as an OUTPUT:

pinMode(ledPin, OUTPUT);

}

void loop() {

// read the value from the sensor:

sensorValue = analogRead(sensorPin);

// turn the ledPin on

digitalWrite(ledPin, HIGH);

// stop the program for <sensorValue> milliseconds:

delay(sensorValue);

// turn the ledPin off:

digitalWrite(ledPin, LOW);

// stop the program for for <sensorValue> milliseconds:

delay(sensorValue);

}