Connect the VCC and GND pins of the ultrasonic sensor to the 5V and GND pins of the Arduino board, respectively. Connect the TRIGGER pin of the ultrasonic sensor to digital pin 8 of the Arduino board.

A small PlatformIO/Arduino project that measures distance using an ultrasonic sensor (HC-SR04 or similar) and prints the measured distance over the serial port. This README explains how to open the ...

In the real world, missile systems use advanced radars, infrared sensors, and other hardware to track and prosecute their targets. [Raspduino Uno] on YouTube has instead used ultrasound for targeting ...