diff --git a/SENSOR.ino b/SENSOR.ino
new file mode 100644
index 0000000..00a9336
--- /dev/null
+++ b/SENSOR.ino
@@ -0,0 +1,29 @@
+#define trigPin A1
+#define echoPin A0
+
+void setup() {
+  Serial.begin (9600);
+  pinMode(trigPin, OUTPUT);
+  pinMode(echoPin, INPUT);
+}
+
+void loop() {
+  long duration, distance;
+  digitalWrite(trigPin, LOW);  // Added this line
+  delayMicroseconds(2); // Added this line
+  digitalWrite(trigPin, HIGH);
+//  delayMicroseconds(1000); - Removed this line
+  delayMicroseconds(10); // Added this line
+  digitalWrite(trigPin, LOW);
+  duration = pulseIn(echoPin, HIGH);
+  distance = (duration/2) / 29.1;
+  
+  if (distance >= 1000 || distance <= 0) {
+    Serial.println("Out of range");
+  }
+  else {
+    Serial.print(distance);
+    Serial.println(" cm");
+  }
+  delay(250);
+}