#define LDR     A0
#define BUTTON   4
#define RED     15
#define GREEN   12
#define BLUE    13

void setup() 
{
    Serial.begin(115200);

    pinMode(LDR, INPUT);
    pinMode(BUTTON, INPUT);
    pinMode(RED, OUTPUT);
    pinMode(GREEN, OUTPUT);
    pinMode(BLUE, OUTPUT);
}

void loop()
{
    Serial.print("LDR: ");
    Serial.println(analogRead(LDR));
    Serial.print("BUTTON: ");
    Serial.println(digitalRead(BUTTON));
 
    analogWrite(RED,   random(0,1023));
    analogWrite(GREEN, random(0,1023));
    digitalWrite(BLUE, HIGH);
    delay(1000);
    digitalWrite(BLUE, LOW);
}
