A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...
Qualcomm has introduced the 3D Sonic Sensor Gen 2. The next-gen ultrasonic fingerprint reader has a larger scanning area and is much faster. The first phones to use it will arrive in early 2021. The ...