Pedestrians distracted by smartphones are easy to meet with various dangers when crossing or walking on the street, such as the obstacles on the sidewalk (e.g., temporary parking and road repairing).

An obstacle-avoiding robot using an ultrasonic sensor and motor control, programmed with Arduino to autonomously navigate and avoid ... ultrasonic sensor, turret rotation, and LCD display for ...

Figure 1 Tamper detection systems commonly employ a switch inside the enclosure to detect tamper attempts. Source: Author. Next, an ambient light sensor offers an easy way to implement tamper ...

A prototype of an ultrasonic obstacle detector developed as a part of a navigation system for blind and visually impaired people is presented. The detector, which employs a single ultrasound source ...