Add files via upload

Counter using IR sensor/COUNTER_WITH_IR.ino

@@ -0,0 +1,23 @@
+#define buzzer 5      // buzzer at pin 5
+#define sensor 6      // ir sensor at pin 6
+int sound=250;         // set buzzer sound
+void setup()
+{
+Serial.begin(9600);
+pinMode(sensor,INPUT);
+pinMode(buzzer,OUTPUT);
+}
+
+void loop()
+{
+int detect=digitalRead(sensor);   // read status of sensor
+if(detect==HIGH)               // if sensor detects obstacle
+{       
+tone(buzzer,sound);            // buzzer sounds
+}
+else{
+digitalWrite(led,LOW);
+noTone(buzzer);
+}
+delay(300);
+}