This Arduino project uses an HC-SR04 Ultrasonic Sensor to measure distance and controls a servo motor based on the measured values. The servo motor moves to specific positions depending on the ...
China Underwater ultrasonic detection is critical for marine security ... Here, we introduce a microfiber-based triboelectric acoustic sensor (MTAS) featuring a core–shell hierarchical structure, ...
Humidity sensors are essential to regulating many indoor and industrial environments. Fang Liu, Jin Hon, and colleagues develop a humidity sensor using graphene oxide quantum dots (GOQDs ...