Add haptic code file

haptic.ino

+#include <Adafruit_DRV2605.h>
+Adafruit_DRV2605 drv;
+
+
+// defines pins numbers
+//A4 SCA
+//A5 SLC
+const int trigPin = 5;
+const int echoPin = 4;
+const int ledPin = 3;
+
+unsigned long time_now = 0;
+
+// defines variables
+long duration;
+int distance;
+
+void setup() {
+pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
+pinMode(echoPin, INPUT); // Sets the echoPin as an Input
+pinMode(ledPin, OUTPUT);
+
+
+Serial.begin(9600); // Starts the serial communication
+
+  drv.begin();
+    
+  // I2C trigger by sending 'go' command
+  drv.setMode(DRV2605_MODE_INTTRIG); // default, internal trigger when sending GO command
+
+  drv.selectLibrary(1);
+  drv.setWaveform(1, 1);  // strong click 100%, see datasheet part 11.2
+  drv.setWaveform(2, 0);  // end of waveforms
+
+}
+
+void loop() {
+
+// Clears the trigPin
+digitalWrite(trigPin, LOW);
+delayMicroseconds(2);
+
+// 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*0.034/2;
+
+
+if(distance < 50) {
+
+    	digitalWrite(ledPin, HIGH);
+    	Serial.println(distance);
+    	delay(distance * 15);
+    	digitalWrite(ledPin, LOW);
+    	drv.go();
+    	delay(distance * 15);
+ 
+}
+else {
+  digitalWrite(ledPin, LOW);	// turn the LED off by making the voltage LOW
+  delay(300);   
+}
+
+}