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 ...

Powered by an Arduino Uno, this laser tripwire ... the garbage can is outfitted with a servo inside the bin for opening and closing the lid, an ultrasonic sensor in front of the bin for sensing ...

With a standard old HC-SR04 ultrasonic sensor, an audio module and a servo to drive a custom gauge ... for anyone who has a bunch of these little Arduino-compatible modules lying around and ...

An ultrasonic sensor is positioned outside the ... Upon sensing an obstacle, it then sends a signal to the Arduino UNO, which, in turn, triggers the motor driver (connected to two DC motors ...