This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ... Arduino Ultrasonic Sensor Wiring Diagram. ... delay(100); } long microsecondsToCentimeters(long ...

Patrick explains a little more about the new Arduino ultrasonic experiment kit and its functionality : This bad boy can be re-programmed with your own code, and the included code samples can be ...

Runner and Arduino enthusiast Nikodem Bartnik has created a DIY 100m sprint timer which is placed at the finish line and signals the start of timing via an audible bleep from its integrated speaker.