To supply targeting data for the launcher, an Arduino Uno uses an ultrasonic sensor pair mounted atop a servo. As the servo rotates, the returns from the ultrasonic sensor are plotted on a screen ...

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]&#82… ...

An ultrasonic sensor is positioned outside the box to detect the presence of a hand within a four-inch ... with only an Arduino UNO, ultrasonic sensor, force-sensitive resistor (or push button ...