#include <SoftwareSerial.h>
#include <Servo.h>

SoftwareSerial mySerial(0, 1); // RX, TX
Servo servo;

int analogPin = 7; 

int val = 0;
int thresh = 550;

void setup() {
  pinMode(7, INPUT);
  pinMode(8, OUTPUT);
  mySerial.begin(9600);  
}

void loop() {
   val = analogRead(analogPin);   
   mySerial.println(val);
   delay(100);

  if(val > thresh) {
    digitalWrite(8, HIGH);
    delayMicroseconds(100);
    digitalWrite(8, LOW);
    delayMicroseconds(100);
  }
}