Added a new Example : Servo Stop

examples/ServoStop/ServoStop.ino

@@ -0,0 +1,50 @@
+/*
+  Setting servo position to 0 whenever any object distance
+  with the ultrasonic sensor is less than 17cm. Setting Servo position to 90 otherwise
+  by Madhur Dixit https://github.com/Chester-King
+
+  You can see the detailed description and required circuit for the sketch at https://gist.github.com/Chester-King/fc19b83777ff629b6708731f09eeaa6c  
+*/
+
+
+#include <Servo.h>
+byte trigPin = 3;
+byte echoPin = 2;
+byte servoPin = 4;
+
+Servo myservo;  // create servo object to control a servo
+int pos = 0; // variable to store the servo position
+void setup() {
+  Serial.begin(9600); //opens serial port, sets data rate to 9600 bps
+  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
+  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
+  myservo.attach(servoPin);  // attaches the servo on pin 4 to the Servo object
+}
+
+void loop() {
+  unsigned long duration;
+  unsigned int distance;
+
+  // Sets the trigPin on HIGH state for 10 micro seconds
+  digitalWrite(trigPin, HIGH);
+  delayMicroseconds(10);
+  digitalWrite(trigPin, LOW);
+
+  // Reads the echoPin, returns the sound wave travel time in microseconds
+  duration = pulseIn(echoPin, HIGH);
+
+  // Calculating the distance
+  distance = (duration / 2) / 29.1;
+
+  // Prints the distance on the Serial Monitor
+  Serial.print("Distance: ");
+  Serial.print(distance);
+  Serial.println(" cm");
+
+  // Checks if the distance between the object is less than 17cm
+  if (distance < 17) {
+    myservo.write(0);   // if the distance between the object is less than 17cm then tell servo to go to position 0
+  } else {
+    myservo.write(90);   // if the distance between the object is greater than or equal to 17cm then tell servo to go to position 90
+  }
+}