This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Industrial robotics overview Ultrasonic Applications Ultrasonics has found its way into a wide range of applications, the largest sectors probably being proximity detection and range measurement.

The HC-SR04 ultrasonic range sensor is a pretty cool pre-wired module that you actually enjoy using when you start playing with electronics, microcontrollers, and robotics. As you might have noticed, ...

The ultrasonic sensor module can map out that data to form a detail-rich 3D image of your fingerprint. The soundwaves can also detect your blood flow, and would reject a print from a severed finger.