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

This Arduino code ... is based on the sensor's pulse duration. An assistive walking stick prototype designed for visually impaired individuals. This smart stick uses ultrasonic sensors to detect ...

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) ...

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 ...