This paper introduces a pioneering approach to ultrasonic-based distance measurement using ultrasonic sensors. Recognizing the influence of diverse weather cond ...

The Internet of Things (IoT) has revolutionized home automation, offering higher levels of functionality. This paper presents a smart home automation system that uses different IoT technologies, ...

Smart home security system built using a NodeMCU, an ultrasonic sensor (HC-SR04), an LED, and a buzzer. The system detects motion and alerts by lighting up the LED, sounding the buzzer, and sending ...

Bedrock Ocean has developed an autonomous underwater vehicle (AUV) that runs for up to 12 hours off its lithium-ion batteries while mapping the floor using its sonar and magnetic sensors.