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

Figure 1. Left—SpectroMarine sensor schematic, a—detection window with spectrometers and CMOS camera, b—window with LEDs for fluorescence excitation, c—mounting holes. Right—part of user-accessible ...

Ever wished your Arduino could send you an SMS alert when something important happens—like an intruder detected by your DIY security system, or a gas leak in your kitchen? With just an Arduino UNO R4 ...

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) ...

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) ...