Current bulk acoustic microresonators offer improved resolution respect to Quartz Crystal Microbalance and Surface Acoustic Wave devices, but tend to be brittle during operation as sensors or requires ...

The smart water controller for metro water supply lines described in this work makes use of a relay, an ultrasonic sensor, a flow sensor, a solenoid valve, GPS, and GSM. The planned system is intended ...

This Arduino code utilizes an ultrasonic sensor to measure distances. When an object is detected within a fix distance , the connected motors trigger a sequence: move backward, turn right, turn left, ...