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 ...

Because this setup consumes more current, and ordinary PC USB ports can’t deliver it. The power adapter simply has to be connected to Arduino UNO and is not shown in the above circuit diagram. In the ...

9V battery or USB–1 (Powering the Circuit) Circuit Diagram of Gas Leakage Detector Using Arduino. The circuit diagram for the gas leakage detector is simple and straightforward. Below, you can see the ...