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In this paper, a new sensing device that can simultaneously monitor traffic congestion and urban flash floods is presented. This sensing device is based on the combination of passive infrared sensors ...

A simple electrode configuration of piezoelectric ultrasonic sensor has been proposed and the sensitivity has been improved. The new electrode configuration enables to use two parts of both the ...

PID-based one-axis ball balancing robot using Arduino. Uses an ultrasonic sensor and servo motor to stabilize a ball at a target distance. Real-time tuning of Kp, Ki, Kd via Serial. Includes stability ...

An obstacle-avoiding robot using an ultrasonic sensor and motor control, programmed with Arduino to autonomously navigate and avoid obstacles by stopping, reversing, and turning.