Skill Dev2 - Yang Bai

int ledPin = D2;
int buttonPin = D3;

void setup() {
    pinMode(ledPin, OUTPUT); // set as an output
    pinMode(buttonPin, INPUT_PULLUP); // set as an input
}

void loop() {
    int buttonStatus = digitalRead(buttonPin);
    if (buttonStatus == LOW){ // when the button is pressed
        digitalWrite(ledPin, HIGH); //turn the light on
    }else{
        digitalWrite(ledPin, LOW); // if not, turn the light off
    }
}

int ledPin = D2;
int switchPin = D3;

void setup() {
    pinMode(ledPin, OUTPUT); // set as an output
    pinMode(switchPin, INPUT_PULLUP); // set as an input
}

void loop() {
    int buttonStatus = digitalRead(switchPin);
    if (buttonStatus == LOW){ // when the switch is turned on
        digitalWrite(ledPin, HIGH); //turn the light on
    }else{
        digitalWrite(ledPin, LOW); // if not, turn the light off
    }
}

int potPin = A5;
int potRead = 0;
int ledPin = D2;
int ledBright = 0;

void setup() {
    pinMode(ledPin, OUTPUT);
    Particle.variable("pot", potRead);
}

void loop() {
    potRead = analogRead(potPin);
    // change the range of potRead
    ledBright = map(potRead, 0, 4095, 0, 255);
    analogWrite(ledPin, ledBright);
}

int potPin = A5;
int potRead = 0;
int ledPin = D2;
int ledBright = 0;
int switchPin = D3;

void setup() {
    pinMode(ledPin, OUTPUT);
    pinMode(switchPin, INPUT_PULLUP);
    Particle.variable("pot", potRead);
    Particle.variable("led", ledBright);
}

void loop() {
    int switchStatus = digitalRead(switchPin);
    if (switchStatus == LOW){ // if turning on the switch
        potRead = analogRead(potPin);
        // change the range of potRead
        ledBright = map(potRead, 0, 4095, 0, 255);
        analogWrite(ledPin, ledBright);
    }else{ // if turning off the switch
        digitalWrite(ledPin, LOW);
    }
}

int ledPin = D2;
int sensorPin = A0;
int lightRead = 0;
int ledBright = 0;

void setup() {
    pinMode(ledPin, OUTPUT);
    Particle.variable("light", lightRead);
    Particle.variable("led", ledBright);
}

void loop() {
    lightRead = analogRead(sensorPin); // read the lightResister
    ledBright = 255 - map(lightRead, 0, 4095, 0, 255);
    analogWrite(ledPin, ledBright); // if the light is brighter, the LED light is stonger
}

int ledPin = D2;
int sensorPin = A0;
int lightRead = 0;
int ledBright = 0;

void setup() {
    pinMode(ledPin, OUTPUT);
    Particle.variable("light", lightRead);
    Particle.variable("led", ledBright);
}

void loop() {
    lightRead = analogRead(sensorPin); // read the lightResister
    ledBright = map(lightRead, 0, 4095, 0, 255);
    analogWrite(ledPin, ledBright); // if there is lots of light, the LED is dim
}

int ledPin = D2;
int sensorPin = A0;
int lightRead = 0;
int ledBright = 0;
int lightResist = 0;

void setup() {
    pinMode(ledPin, OUTPUT);
    Particle.variable("light", lightRead);
    Particle.variable("led", ledBright);
}

void loop() {
    lightRead = 4095 - analogRead(sensorPin); // read the light
    lightResist = analogRead(sensorPin);
    if(lightRead < 600){
        ledBright = map(lightResist, 0, 4095, 0, 255);
        analogWrite(ledPin, ledBright); 
    }else{
        digitalWrite(ledPin, LOW);
    }
}

int led1 = D2;
int button1 = D3;
int buttonState;
int lightSensor1 = A0;
int lightRead = 0;
int ledLighting = 0;

void setup() {
    
    pinMode(led1, OUTPUT);
    pinMode(button1, INPUT_PULLUP);
    Particle.variable("light", lightRead);
    Particle.variable("LEDbrightness", ledLighting);
    
}

void loop() {
    buttonState = digitalRead(button1);
    lightRead = analogRead(lightSensor1); //0-4095
    
    // if the button is pressed: the led will react with the lightness of outside world
    // the stronger the outside light is, the weaker the light intensity of LED will be 
    // if the button is not pressed, nothing will happen
    
    if (buttonState == LOW){
        ledLighting = 255 - map(lightRead, 0, 4095, 0, 255); //0-255
        analogWrite(led1, ledLighting);
    }else{
        digitalWrite(led1, LOW);
    }
    }