/*

*/
int potPin = 2;
int ms = 7;
bool isHigh = false;
double pwmval = 0.0;
Servo victor;
int victorpin = 10;
bool runonce = true;
void setup() {
  Serial.begin(9800);
  victor.attach(victorpin);
  pinMode(ms, INPUT);
}

void loop() {
  pwmval = analogRead(potPin);

  isHigh = (digitalRead(ms) == HIGH);

  if (isHigh) {
    pwmval *= -1;
  }

  pwmval = map(pwmval, -1023, 1023, 0, 180);

  victor.write(pwmval);
}

void pwmcalibration() {
  if (runonce) {
    victor.write(180);
    delay(2000);
    victor.write(0);
    delay(2000);
    victor.write(90);
    delay(2000);
    runonce = false;
  }

}