Over the years, the disabled community too has reaped the benefits of the vast technological advancements that have been noted in almost every field. The simple support stick or the humble hearing aid ...

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Sarthak Jain designed an automated touchless doorbell with ultrasonic sensors. The sensor can detect the presence of a person or object within a distance of 30 to 50 cm and produce the ‘beep ‘sound ...