A standard electret microphone can detect sub-audio "sounds" when some simple equalization circuitry is added.

This Arduino code utilizes an ultrasonic sensor to measure distances ... obstacles and alerts the user with a buzzer. It's compact, efficient, and cost-effective — made as part of a science/tech ...

This project provides ROS drivers for Bosch Off-Highway sensor systems. (Radar Off-Highway Premium, Radar OHW, General Purpose Radar Off-Highway (GPR), Ultrasonic Sensor System OHW Entry & Premium) ...

“The IU Visuals drone team collaborated with Student Life to film a video highlighting a student project at Eigenmann Hall,” Nowak wrote. “This case is now closed.” ...

WASHINGTON — The Army plans to have its Next Generation Command and Control’s (NGC2) integrated data layer fully operational at the division level before next year’s Project Convergence ...