IDeATe

Outcome

I followed the Particle set up and made a simple circuit to create a blinking LED. At the same time, I finished the exercises in Making your LED blink and Making a connected LED:(https://diotlabs.daraghbyrne.me/docs/a-simple-internet-appliance/first-sketch/). All these tests went all as required. Please make it full screen to watch the video for each exercise.

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//setup
int led1 = D2;

void setup() {

    pinMode( led1, OUTPUT);
}

void loop() {

    digitalWrite( led1, HIGH );
    delay( 1000 );
    digitalWrite( led1, LOW );
    delay( 1000 );
    //and repeat

}

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//exercise 1: Modify the program to Blink on and off every 3 seconds.
int led1 = D2;

void setup() {

    pinMode( led1, OUTPUT);
}

void loop() {

    digitalWrite( led1, HIGH );
    delay( 3000 );
    digitalWrite( led1, LOW );
    delay( 3000 );
 

}

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//exercise 2:Change the program to blink on and off 5 times then stop for 3 seconds. Each blink should be 0.5s
int led1 = D2;

void setup() {

    pinMode( led1, OUTPUT);
}

void loop() {
    for (int i = 0; i < 5; i++){
        digitalWrite( led1, HIGH );
        delay( 500 );
        digitalWrite( led1, LOW );
        delay( 500 );
       }
    digitalWrite( led1, LOW );
    delay( 3000 );

}

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//exercise 3:Program the LED’s to alternate blinks i.e. when LED 1 turns on, LED 2 turns off, then when LED 2 turns on, LED 1 turns off.
int led1 = D2;
int led2 = D3;

void setup() {

    pinMode( led1, OUTPUT);
    pinMode( led2, OUTPUT);
}

void loop() {
        digitalWrite( led1, HIGH );
        digitalWrite( led2, LOW );
        delay( 1000 );
        digitalWrite( led1, LOW );
        digitalWrite( led2, HIGH );
        delay( 1000 );

}

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//setup Use On and OFF to control the LED
int led1 = D2;

void setup() {

    pinMode( led1, OUTPUT);
    digitalWrite(led1, LOW);
    Particle.function("led", ledControl);
}

void loop() {
}

int ledControl(String command)
{
   int state = LOW;
   if(command == "ON"){
        state = HIGH;
   }else if(command == "OFF"){ 
	   state = LOW;
   }else{
	   return -1;
   }

   // write to the appropriate pin
   digitalWrite(led1, state);
   return 1;
}

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//exercise1 Modify the cloud function to blink the LED 3 times after it is called
int led1 = D2;

void setup() {

    pinMode( led1, OUTPUT);
    digitalWrite(led1, LOW);
    Particle.function("led", ledControl);
}

void loop() {
}

int ledControl(String command)
{
   int state = LOW;
   if(command == "ON"){
       for (int i = 0; i < 3; i++){
           digitalWrite(led1,HIGH);
           delay(500);
           digitalWrite(led1,LOW);
           delay(500);}
   }else if(command == "OFF"){ 
	   state = LOW;
   }else{
	   return -1;
   }

   // write to the appropriate pin
   digitalWrite(led1, state);
   return 1;
}

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//exercise2 string pass the number of times you would like it to blink
//Set the function to blink that number of times
int led1 = D2;
int value = 0;

void setup() {

    pinMode( led1, OUTPUT);
    digitalWrite(led1, LOW);
    Particle.function("ledn", ledControl);
}

void loop() {
}

int ledControl(String command)
{
   int state = LOW;
   value = command.toInt();
   if(value > 255)return -1;
   if(value < 0)return -1;
   else{
        for (int i = 0; i < value; i++){
           digitalWrite(led1,HIGH);
           delay(500);
           digitalWrite(led1,LOW);
           delay(500);}
         }
	state = LOW;

   // write to the appropriate pin
   digitalWrite(led1, state);
   return 1;
}

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//exercise3 Now add a second LED to the circuit.
int led1 = D2;
int led2 = D3;

void setup() {

    pinMode( led1, OUTPUT);
    pinMode( led2, OUTPUT);
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    Particle.function("led", ledControl);
}

void loop() {
}

int ledControl(String command)
{
    int state = LOW;
    if(command == "ON"){
        state = HIGH;
   }else if(command == "OFF"){ 
	   state = LOW;
   }else{
	   return -1;
   }

   // write to the appropriate pin
   digitalWrite(led1, state);
   digitalWrite(led2, state);
   return 1;
}

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//Bonus: dimming control
int ledPin = D2;

// create a variable to store the
// current brightness of the LED
int ledValue = 0;

void setup()
{
   //Register our Particle function to allow
   // Control of the LED
   Particle.function("led", ledControl);

   // Make the variable 'ledValue' available through
   // the Particle cloud as 'brightness'
   Particle.variable("brightness", ledValue);

   // Set up pin for output
   pinMode(ledPin, OUTPUT);
}

void loop()
{

}

int ledControl(String command)
{
    // Convert the passed variable to an integer
   ledValue = command.toInt();

   // Check it is a valid number
   if( ledValue > 255 ) return -1;
   if( ledValue < 0 ) return -1;

   // Use PWM to set the brightness
   // of the LED
   analogWrite(ledPin, ledValue);

   // Return 1 to say completed successfully
   return 1;
}

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//bonus built-in RGB
int redValue = 255; 
int greenValue = 255; 
int blueValue = 255; 

void setup()
{
   //Register our Particle function to allow

   // Make the variable 'ledValue' available through
   // the Particle cloud as 'brightness'
    Particle.function("led", ledControl);
   // Set up pin for output
   
   Particle.variable("Red", redValue);
   Particle.variable("Green", greenValue);
   Particle.variable("Blue", blueValue);
}

void loop()
{

}

int ledControl(String command)
{

    String colors[3];
    int firstCommaIndex = command.indexOf(',');
    int secondCommaIndex = command.indexOf(',', firstCommaIndex+1);
    colors[0] = command.substring(0, firstCommaIndex);
    colors[1] = command.substring(firstCommaIndex+1, secondCommaIndex);
    colors[2] = command.substring(secondCommaIndex+1);
    
    redValue = colors[0].toInt();
    greenValue = colors[1].toInt();
    blueValue = colors[2].toInt();


    // We need to say we'll be controlling the RGB led
    RGB.control(true);

    // set it to white
    RGB.color( redValue,greenValue,blueValue);

    // wait 3 seconds
    delay( 3000 );

    // return control of the RGB led to Particle
    RGB.control(false);


   return 1;
}

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Process

When I get started, everything went on smoothly and there is enough guidance for me to do the exercise. However, when I did the coding for inputting the number of LED blinks, I felt like I am not quite familiar with the programming language here. So even if I had the logic in my mind, I didn't make it. But finally I figured it out by reading further examples on DioT Labs and searching for information on this coding language. Overall, it is a good start!

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Reflection

This is a very interesting process to get started. I have downloaded the app on my phone which is easy to connect with ARGON to build the circuit. I have learnt the basic knowledge of the IoT kit and get to know the internet appliance and how to build a simple circuit. It is fun to write the code and build a circuit and test on it. Also, I am getting familiar with the programming language(Arduino C) in Particle Web IDE which may be a benefit for the future project.

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