sense the distance with the ultrasonic sensor, and serial.print it

ultrasonicSensor/ultrasonicSensor.ino

@@ -0,0 +1,17 @@
+#include <MeMCore.h>
+
+
+MeUltrasonicSensor sensor(3);
+float distance;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  distance = sensor.distanceCm();
+  Serial.print(distance);
+  Serial.print("\n");
+}