This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

The ultrasonic distance sensor (HC-SR04) is a widely used electronic component for non-contact distance measurement. It operates on the principle of echo-ranging, where it emits an ultrasonic pulse ...

Connect a 9V battery to Arduino DC barrel jack to power the Arduino and the ultrasonic sensor. Install a separate battery pack into the battery holder to power the motor driver and the motors. Ensure ...

The Smart SMS Alert System using Seeed Studio Xiao ESP32 is one of the compact IoT projects that uses an HC-SR04 ultrasonic sensor to detect nearby movement. The system acts like a motion detector ...

One of the major problems faced by most countries today is water scarcity. This scarcity is mainly due to the wastage of water. There is an urgent need to control water wastage to protect the ...