Ultrasonics refers to signals that are above the human hearing span (>20 kHz), and usually in the 40- to 70-kHz range. These signals are used like radar—they’re radiated toward a target and reflected ...

Abstract: A fully integrated 3-D ultrasonic fingerprint sensor-on-a-chip is presented. The device consists of a 110× 56 piezoelectric micromachined ultrasonic transducer (PMUT) array bonded at the ...

This repository contains the MicroPython I2C library for the Gravity: URM09 Ultrasonic Sensor from DFRobot, as well as a very simple example of how to use it. The original repository from DFRobot is ...

Abstract: Ultrasonic sensors are able to provide highly accurate measurements if they are properly scheduled, otherwise, the intersensor interference (ISI) could greatly deteriorate the performance.

This module is based on the I2C light-to-digital converter TSL2561 to transform light intensity to a digital signal. Different from traditional analog light sensor, as Grove - Light Sensor, this ...