Pacman

For the “stupid pet trick” assignment, I made a Pacman that “ate” the LEDs coming towards it.

The back is somewhat of a mess, despite my efforts to tidy up the wires as much as possible, just because it was coming out of all over everywhere. I used maximum number of LEDs, which is as many output pins as I had. The speed of the LEDs moving towards the Pacman and the movement of the Pacman can be altered by the potentiometer.

#include <Servo.h> 

Servo myservo;

int pos = 90;
int val;

int sensorPin = 0;
int startLED = 2; 
int endLED = 7;

void setup() {
  // put your setup code here, to run once:
  for(int i = startLED; i < endLED + 1; i++){
    pinMode(i, OUTPUT);
  } 
  myservo.attach(9);
  myservo.write(pos);

}

void loop() {
  // put your main code here, to run repeatedly:

  int sensorValue = analogRead(sensorPin);

  for (int i = startLED; i < endLED + 1; i++){

    digitalWrite(i, HIGH);
    sensorValue = analogRead(sensorPin);
    delay(sensorValue);
    digitalWrite(i, LOW);
    sensorValue = analogRead(sensorPin);
    delay(sensorValue);
  }
  myservo.write(pos - 45);
  delay(sensorValue);
  myservo.write(pos);

}

Initially I found that without having to do analogRead before every time I did delay, the effect of turning the potentiometer would also be delayed. As a result, putting analogRead before doing a delay made the Pacman more responsive to the changes of the potentiometer.