The wiring in the diagram shows the ultrasonic sensor's trigger and echo pins connected to pins 8 and 9 respectively. Two push buttons are used: one for calibration (setting the maximum water level) ...

Tubewell Water Sensor Tubewell Water Sensor is all in one IoT Automation to Detect Tubewell/Motor Running Water and Tank Level as well. It will Ensure that water is coming from tubewell/borewell and ...

Abstract: We connected $\mathbf {p H}$ sensor and solar cell into Arduino Board to control data transmission via red laser communication or popular known as visible light communication (VLC). The ...