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 paper deals with performance evaluation of NXT ultrasonic sensor and Parallax Ping sensor for distance measurement. We propose an efficient method based on piecewise linear regression to improve ...

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, ...