Halloween Scareomatic

/*
Halloween Scareomatic

learnelectronics
7 AUG 2017

www.youtube.com/c/learnelectronics
[email protected]
*/

#include <NewPing.h>                                  //library for SONAR sensor

#define TRIGGER_PIN  11                               //SONAR trigger pin on digital 11
#define ECHO_PIN     10                               //SONAR echo (return) pin on digital 10
#define MAX_DISTANCE 200                              //maximum range for SONAR sensor in cm
#define leye         5                                //left LED eye on digital 5 (a pwm pin)
#define reye         6                                //right LED eyeon digital 6 (a pwm pin)
#define sound        12                               //sound board trigger pin on digital 12

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);   //create instance of NewPing called sonar

void setup() {

  Serial.begin(9600);                                 //serial comms for debug
  pinMode(sound,OUTPUT);                              //set sound board for output
  pinMode(leye,OUTPUT);                               //set leye board for output
  pinMode(reye,OUTPUT);                               //set reye board for output
  digitalWrite(sound,LOW);                            //force all output pins low
  digitalWrite(leye,LOW);
  digitalWrite(reye,LOW);


}

void scareMe(){                                       //define a function called scareMe
  digitalWrite(leye,LOW);                             //set leye to 0
  digitalWrite(reye,LOW);                             //set reye to 0
  digitalWrite(sound,HIGH);                           //trigger sound board
  digitalWrite(sound,LOW);                            //stop trigering sound board

    digitalWrite(leye,HIGH);                          //flash both eyes 3 times full brightness
    digitalWrite(reye,HIGH);
    delay(200);
    digitalWrite(leye,LOW);
    digitalWrite(reye,LOW);
    delay(200);
    digitalWrite(leye,HIGH);
    digitalWrite(reye,HIGH);
    delay(200);
    digitalWrite(leye,LOW);
    digitalWrite(reye,LOW);
    delay(200);
    digitalWrite(leye,HIGH);
    digitalWrite(reye,HIGH);
    delay(200);
    digitalWrite(leye,LOW);
    digitalWrite(reye,LOW);
    delay(200);

}

void loop() {

for(int n = 0;n <10; n++){                            //ramp up brightness on eyes very dimm
  analogWrite(leye,n);
  analogWrite(reye,n);
  delay(50);
}

for(int n = 10;n >0; n--){                            //ramp dowm brightness on eyes to off
  analogWrite(leye,n);
  analogWrite(reye,n);
  delay(50);
}

 int x = (sonar.ping_cm());                           //check SONAR
 if (x > 0 && x < 100){                               //is someone less than foot away?
  scareMe();                                          //call scareMe function
 }
 Serial.println(sonar.ping_cm());                     //print value to serial port for debug
 delay(1000);                                         //wait one second


}