#include <Servo.h>
Servo mouth;
Servo neck;

const int buttonPin = 7;
int buttonState;
int mouthPos = -1;
int lastButtonState = LOW;

long lastDebounceTime= 0;
long debounceDelay = 50;

void setup() {
  mouth.attach(3);
  neck.attach(2);
 pinMode(buttonPin, INPUT);
 mouth.write(95);
 neck.write(75);
}

void loop() {

  int reading = digitalRead(buttonPin);
  if(reading != lastButtonState) {
    lastDebounceTime = millis();
  }
  if((millis() - lastDebounceTime) > debounceDelay) {
    if(reading != buttonState) {
      buttonState = reading;
      if(buttonState == HIGH) {
         toggleMouth();
      }
    }
  }
  lastButtonState = reading;
  int neckPot = analogRead(2);
  int neckPos = map(neckPot,0,1024,15,75);
  neck.write(neckPos);
}

void toggleMouth(){
   if(mouthPos == -1) {
     mouthPos = 1;
     mouth.write(75);
   } else {
     mouthPos = -1;
     mouth.write(95);
   }
}