Courtney Pozzi | Creative Computing Summer 2015

Hi all,

I tried to venture into new territory this week and explore photoresistors in hopes of making a smarter reading light.

I have been inspired by my summer challenge to read more, which I have found myself doing before bed. While I love relaxing with a book before falling asleep, I dislike that I have to get up to turn my lights/lamp off.

Reading Light!

I realized quickly while experimenting that I knew nothing about photoresistors and thresholds, which was crucial to this piece of code. I researched and borrowed quite a bit, but still know only very little about thresholds and would like to know more!

int lightPin = 0; 
int threshold = 550;

void setup(){
    Serial.begin(9600);
    pinMode(3, OUTPUT);

}

void loop(){
    Serial.println(analogRead(lightPin)); 

    if(analogRead(lightPin) > threshold ){    
        digitalWrite(3, LOW);
        Serial.println("high"); 
    }else{
        digitalWrite(3, HIGH);
        Serial.println("low"); 
    }

    delay(100);
}

//*sourced/based off code from nakkaya.com

int lightPin = 0;

int threshold = 550;

void setup(){

Serial.begin(9600);

pinMode(3, OUTPUT);

}

void loop(){

Serial.println(analogRead(lightPin));

if(analogRead(lightPin) > threshold ){

digitalWrite(3, LOW);

Serial.println("high");

}else{

digitalWrite(3, HIGH);

Serial.println("low");

}

delay(100);

}

//*sourced/based off code from nakkaya.com

Ideally this would be a lot more light than two LEDS, hence the name.

Thanks!

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