The code includes two Arduino libraries: one for the servo and another for the ultrasonic sensors. The main code is a simple 14-line piece with a simple if-else statement you can readily modify.

It uses an ultrasonic sensor, ... This DIY indicator is based on the Spaceship Interface code found in the Starter Kit Projects book, ... an Arduino Uno, a 16x2 LCD, ...

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 targeti… ...